MX3EG1A

7/16/2019 MX3EG1A

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MX3EG1A

Automatic Synchronizer

TECHNICAL MANUAL MDE/A133 2295 001

ABCD

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MDE/A133 2295 001MX3EG1A

SUMMARY

1. TECHNICAL DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2. GENERAL CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3. OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73.1 Parallel sequence start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.2 Voltage regulator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.2.1 Max. deviation bar voltage/rated voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73.2.2 Min. generator voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.2.3 Max. voltage difference. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73.3 Frequency regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.3.1 Max. deviation rated frequency/ bar frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.3.2 Max. deviation rated frequency/ generator frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.3.3 Max. frequency difference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.4 Load pulse and parallel command . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.5 Dead-bar mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.5.1 DB dead-bar mode OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

3.5.2 DB dead-bar mode ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83.5.3 DB dead-bar mode ON-CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.6 Main and spare settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4. ADDITIONAL FUNCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4.1 Diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 94.2 Output circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

4.3 LED signalling circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104.4 Digital inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.5 Counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.6 Event log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104.7 Measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4.8 Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 104.9 Alphanumeric code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114.10 Language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.11 LCD settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114.12 Inhibiting operation-deconfiguration from network . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.13 Serial communication on LONWORKS (TM) bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.14 RS485 serial communication on MODBUS protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 124.15 Oscilloperturbography . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

5. LOCAL INTERFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

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6. LCD MENU STRUCTURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

6.1 MAIN READING MENU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 146.1.1 Changing dialogue language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

6.1.2 Changing date and time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156.1.3 Displaying settings in use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 156.1.4 Displaying main settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

6.1.5 Displaying spare settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166.1.6 Displaying current measurements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

6.1.7 Displaying counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

6.1.8 Displaying events . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176.1.9 Displaying output relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

6.1.10 Displaying digital inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 176.1.11 Displaying leds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

6.1.12 Displaying relay data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

6.1.13 Displaying diagnostics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 186.2 MAIN SETTING CHANGE MENU. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

6.2.1 Selecting current setting group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206.2.2 Changing main settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

6.2.3 Changing spare settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

6.2.4 Setting output relays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 206.2.5 Setting digital inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

6.2.6 Setting LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 216.2.7 Setting alphanumeric code. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

6.2.8 LCD back-lighting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

6.3 TEST MENU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

7. APPLICATION AND USE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

8. INSTALLATION - TRANSPORT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

8.1 ESD electrostatic charges. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

8.2 Acceptance-storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 238.3 Assembling and connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

9. SETTING THE UNIT AT WORK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

9.1 Safety regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 239.2 Checking nameplate ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

9.3 Final inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

APPENDIX A - Network data exchange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

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1. TECHNICAL DATA

The device belongs to the Modulex 3 line, and processes with a

numerical technique two phase voltages to provide the automatic

synchronization besides several additional functions.

The user's interface is available locally through the presence of

a display unit and remotely through a LONWORKS(TM)b bus with

a control and monitoring system.

It is furthermore capable of dialoguing with a Personal Computer

through a special connector placed on the relay front and an

interface programme; this feature makes it easier and safer to

programme the setting and configure parameters and read the

set values, measurements and logged events; the programming

can also be performed from previously created files.

Control functions:

max. rated frequency/bar frequency deviation

max rated frequency/generator frequency deviation

max. rated voltage /bar voltage deviation

min. generator voltage value max frequency difference

max. frequency voltage difference

max. phase difference

max. time for parallel operation execution

max. no.of parallel attempts

live bar/dead bar control

possibility of two settings groups - spare and main settings

Measurements functions:

effect. Ub bar voltage value expressed in Ubn multiples

effect. Ug generator voltage value expressed in Ugn multiples

fb bar frequency value expressed in Hz

fg generator frequency value expressed in Hz

phase difference between bar voltage and Dp generator voltage

expressed in grades

logging of the last eight events with storage of event type, date,

time, valuesof Ub,Ug, fb, fg, Dp measurements, no. of parallel

attempts and parallel time

oscilloperturbography: recording, for a total time equalling 2.5

s, of the instant values (12 samples per period) of the inputs

measurements (Ub,Ug) and of the 18 logical states among

which are digital inputs, end relays and leds

RCE: recording of the last 32 state changes (with relative dateand time); they are only available through PC or network.

Other functions:

selection of rated frequency within 50Hz and 60Hz

selection of dialogue language (Italian, English, French and

Spanish)

self-monitoring with detailed indication of the fault and alarm

through LEDs and "normally energized" output relays (X6)

possibility of serial communication both with a local PC and on

LONWORKS (TM) bus

possibility of assigning one or more functions of the device toeach output relay and each LED

possibility of setting all the output relays to "normally energized"

or "normally de-energized"

possibility of selecting, for each LED, the monostable or

bistable operating mode (stored)

optoinsulated digital inputs which can be programmed for

control and reset functions. These can be individually enabled

by normal energizing or de-energizing, on front or o on level.

They can also be used to control the continuity of the tripping

circuit

partial and total counters for each kind of event

MAIN SETTINGS

Main parameters

bar rated voltage: Ubn: 40 ÷ 130 V

generator rated voltage: Ugn: 40 ÷ 130 V

by steps of 0.1 V

measuring range: 0 ÷ 200 V

oper.frequency range for measurements for fn 50Hz: 10 ÷ 60 Hz

oper.frequencyca range for measurements for fn 60Hz: 10 ÷ 72 Hz

permanent overloading: 200 V

overloading for 10 s: 250 V

burden with 100 V: ≤ 0.6 VA per phase

Synchronization parameters

parallel sequence max. time ts: 1 ÷ 30 min

by steps of 1 min

max. number of parallel attempts Ns: 1 ÷ 10

by steps of 1

closing command pulse time tc: 0.10 ÷ 9.99 s

closing delay tr: 0.02 ÷ 0.99 s

occurred-closing wait time twc: 0.10 ÷ 9.99 s

by steps of 0.01 s

fb/fn max.deviation Dfb: (±) 1 ÷ 5 %

fg/fn max. deviation Dfg: (±) 1 ÷ 20 %

Ub/Ubn max. deviation DUb: (±) 1 ÷ 5 %Ug/Ugn min. generator voltage DUg: 70 ÷ 85 %

by steps of 1 %

stability time td: 0.1 ÷ 10.0 s

by steps of 0.1 s

max. frequency difference Df: (±) 0.02 ÷ 0.50 Hz

by steps of 0.01 Hz

max. voltage difference DU: (±) 1 ÷ 30 %

by steps of 1 %

max. phase difference Dp: (±) 1 ÷ 30 º

by steps of 1 º

live bar, parallel mode LB: NORM

SUBSYNC

SUPERSYNC

dead bar DB: OFF

ON

ON CHECK

dead bar level Ud: 0.10 ÷ 0.30 Ubn

by steps of 0.01 Ubn

Frequency regulator parameters

frequency regulating mode CPf: CONT-PULSE

frequency regulation pulse time tfpu: 0.10 ÷ 9.99 s

frequency regulation min. pause time tfpa: 1.00 ÷ 9.99 s

frequency regulat ion max. pause time tfpm: 10.00 ÷ 99.99 s

by steps of 0.01 s

load pulse LP: ON-OFF

load pulse time tlp: 0.10 ÷ 9.99 s

by steps of 0.01 s

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Voltage regulator parameters

voltage regulation mode CPU: CONT-PULSE

voltage regulation pulse time tupu: 0.10 ÷ 9.99 svoltage regulation pause time tupa: 0.10 ÷ 9.99 s

by steps of 0.01 s

ADDITIONAL SETTINGS

bar TV primary rated voltage: 100 ÷ 1000000 V

generator TV primary rated voltage: 100 ÷ 1000000 V

by steps of: 1 Vrated frequency fn: 50 o 60 Hz

Auxiliary power supply

versions MX3EG1A.11, .61 and .71

Uaux: 19 ÷ 100 VccUaux: 19 ÷ 72 Vca

versions MX3EG1A.12, .62 and .72Uaux: 64 ÷ 300 VccUaux: 64 ÷ 275 Vca

a.c. frequency for Uaux: 47 ÷ 63 Hzd.c.burden (min/max): 5 W / 10 W

a.c.burden (min/max): 10VA / 20VA

Contacts featuresrated current: 5 Abreaking power (110 Vcc; L/R= 40 ms; 105 operations): 0.3 Aclosing and capacity for 0.5 s: 30 A

mechanical life: 106 operations

Digital inputs

versions MX3EG1A.11, .61 and .71Uaux IN DIG: 19 ÷ 100 Vcc

input resistance: 9 kohmversions MX3EG1A.12, .62 and .72

Uaux IN DIG: 64 ÷ 264 Vcc

input resistance: 48 kohm

Errors of measuring equipment

Voltage thresholds

relative error: ≤ 2.5% on point + 0.02 V

fidelity error: ≤ 0.02 V

Frequency thresholds

relative error: ≤ 0.01 Hz

fidelity error: ≤ 0.01 Hz

Phase thresholds

relative error: ≤ 1°

fidelity error: ≤ 1°

Error variations

as frequency varies within ± 5% fn (for voltage values) ± 10Hz (forfrequency values) and with distorsion factor≤ 5%

Voltage threshold


as temperature and Uaux vary within the operation field

Voltage threshold


for asymmetric quantities

relative error in the presence of unidirectional: ≤ 5%

Timing errors

relative error on independent times: ≤ 3% o 20 msfidelity error on independent times: ≤ 1% o 20 ms

Timing error variation

as frequency varies within ± 5% fn (for voltage values) ± 10Hz (for

frequency values) and with distortion factor≤ 5%relative error on independent times: ≤ 1% or 10 ms

as temperature and Uaux vary within the operation field

relative error on independent times: ≤ 0.5% or 10 ms

Further characteristicsMax.threshold drop-out ratio: > 0.95Min. threshold drop-out ratio: < 1.03Max.frequency drop-out thresholds: (threshold - 0.01) Hz

Min.frequency drop-out thresholds: (threshold + 0.01) Hzdrop-out time: ≤ 50 ms

idle time (overshoot): ≤ 30 ms

Operating ranges

Operating temperature: -10 °C ÷ +60 °Cstorage and transport temperature: -25 °C ÷ +80 °Crelative humidity: < 95% without formation of condensate

vibrations: IEC255-21-1; class 2; 0.075mm 10-60Hz; 1g 60-500Hz

WeightTotal: 2.5 Kg

Protection class

device: IP52on request, front panel: IP66

terminal board with mounted covering: IP20

Insulation

To ground and between two independent circuits:2 kV, 50 Hz per minute

Pulse holding: 5 kV 1.2/50 µs

Electromagnetic compatibility

89/336/ECC directive : EN50081-2 EN50082-2For industrial environmentsUNIPEDE NORM(SPEC)13 "Automation and control apparatus for

generating station and substation"ENEL R_EMC_02 "Apparati di automazione e controllo per centrali e

stazioni elettriche".

Electromagnetic compatibility conditions:IEC 1000-4-8 EN 61000-4-8 lev.5; 1000 A/mIEC 1000-4-10 EN 61000-4-10 lev.5; 100 A/m

IEC 1000-4-3 ENV 50140 lev.3; 10 V/m77B(Sec)1 ENV 50204 lev.3; 10 V/m

IEC 1000-4-2 EN 61000-4-2 lev.4; 8kV contact;15kV in air77A/120/CD lev.4 / 3; 300V / 10-1-1-10 VIEC 1000-4-5 EN 61000-4-5 lev.4; 4kV 1.2/50µs

IEC 1000-4-12 EN 61000-4-12 lev.3; 2.5 kV

IEC 1000-4-4 EN 61000-4-4 lev.4; 4 kV77B/144/DIS ENV 50141 lev.3; 10 V77A(Sec)99 lev.2; 10%IEC 1000-4-11 EN 61000-4-11 > 20 ms

IEC/CISPR 11 EN 55011 group 1 class A

Reference standards

CEI 95-1 EN 60255-6 IEC 255

Low voltage directive 73/23/ECC

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2. GENERAL CHARACTERISTICS

The device features a mechanical casing that is 4U in height and

as wide as to allow up to 4 pieces to be accommodated in a 19"

rack in addition to normal flush-mounting.

The casing is made of hot-galvanized PVC-coated plate frame

inside which the movable part that carries all the electronic

circuits and the local interface slides on guides. The pull-out

action is facilitated by special 'handles', which, when the device

is "plugged in", are also used to lock the two parts. The aluminium

frame of the moving part renders the latter excellently rigid.

The device/system interface terminal blocks are located on the

rear side of the casing and, for each electrical connection, a

screw clamp is available to receive up to 2 cable terminals, 4mm2

i in size; using a special accessory that is included in the supply,

the connection can also be made by means of Faston units.

Special error-sensing codes avoid inserting relays other than

those compatible with the housing.

A cover lid classes the terminal block within the IP20 protection.

When the movable part is pulled out, the voltage and auxiliary

circuits are disconnected.The device front bears two labels:

one plate listing the factory settings of the device, namely auxiliary

voltage and frequency;

the other plate, always in accordance with the factory settings,

provides a description of LED signals.

Both these plates can be easily replaced with new ones, showing

all the information as required by the client.

As far as the factory settings relevant to output relays, LEDs,

digital inputs and relative sett ings are concerned, refer to tables

A, B and C.

3. OPERATION

3.1 Parallel sequence start

Upon enabling the digital input associated with LB start (with

enabling characteristic on front) the stability timer td is started to

allow any external settings to be made; when the td time is over,

the device begins the parallel sequence.

The sequence can be stopped by enabling the digital inputassociated with STOP, An EXT 1 or An EXT 2 (respectively, for

manual sequence interruption or external failures).

In this case, the command relative to the synchronization

sequence interrupted by STOP or an external event EXT1 or

EXT2 as well as any signal corresponding to the event are sent;

the partial and total counter corresponding to the mentioned event

is incremented and the event logging is enabled.

Once the parallel has been performed, the sequence is interrupted

when the signal of "closed breaker" is received (enabling of the

digital input associated with CH52).

3.2 Voltage regulator

3.2.1 Max. deviation bar voltage/rated voltage

The device works by comparing the Ub bar voltage with the Ubn

bar rated voltage.

When the deviation between the voltages exceeds the DUb set

value, the 'START request failed' command - due to Ub out-of-

tolerance condition - as well as any signal corresponding to the

event are sent; the partial and total counter relative to the event


3.2.2 Min. generator voltage

The device works by comparing the Ug generator voltage with theUgn generator rated voltage.

When the Ug voltage falls below the DUg set value, the 'START

request failed' command - due to Ug out-of-tolerance condition -

as well as any signal corresponding to the event are sent; the

partial and total counter relative to the mentioned event is

incremented and the event logging is enabled.

3.2.3 Max. voltage difference

The device works by comparing the Ub bar voltage with the Ug

generator voltage.

When the difference between the modules of the two voltages

modules expressed in Ubn and Ugn multiples, exceeds the DUset value, the 'voltage increase' (if Ug<Ub) or 'voltage decrease'

(if Ug>Ub) command is sent.

The voltage increase/decrease commands can be of 'continuous'

or 'pulse' type depending on the regulation mode that has been

set, that is CPU CONT or PULSE.

If the PULSE mode has been set, the pulse time is defined by the

tupu set parameter; the min. pulse interval is given by the tupa set

parameter.

The device makes it possible to obtain Ubn and Ugn values that

are different from each other. This allows the parallel to be

performed even with one TV installed upstream and the other

installed downstream a transformer with Yd group; this is made

by using, on one side, a phase-phase voltage and, on the other,

the corresponding neutral-phase voltage without the application

of any TV adapter.

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3.4 Load pulse and parallel command

When none of the following thresholds: DUb, DUg, DU, Dfb, Dfg,

Df, Dp is tripping, the protection sends a parallel command with

a pulse duration equal to tc; the command is sent with a n

advance time equal to tr (breaker trip time) compared to the

expected Dp=0 phase difference instant: this to allow the breaker

to be closed just when the voltages are in phase with each other.

If after the twc time the breaker is not closed (corresponding

digital input enabling failed) and the parallel conditions are still

acceptable, a further closing command is sent; the max. number

of commands is defined by the set Ns.

If after the last attempt the breaker is not closed, the 'failed

synchronization sequence' command - once the max. number of

attempts has been reached - as well as any signal corresponding

to the event will be sent; the partial and total counter relative to the

event is incremented and the event logging is enabled.

In the same way, if the sequence has not been terminated after

the max. time ts defined for the parallel sequence, the 'failed

synchronization sequence' command - following a timeout

condition - as well as any signal corresponding to the event will besent; the partial and total counter relative to the mentioned event


On receiving the 'breaker closed' signal, the 'correctly-performed

synchronization sequence' command is sent, the event logging

is also enabled.

Together with the 'breaker closing' command, in the event of LP

load pulse in ON mode, a frequency increase pulse is issued for

a time duration equal to tlp. This frequency increase pulse and,

therefore, the system speed are aimed at preventing energy

returns from occurring.

3.5 Dead-bar modeThe device can even be used to feed an out-of-voltage bar (dead

bar): the generator parameter can be set before the breaker

closing.

The sequence start occurs upon enabling the digital input

associated with a DB start (with enabling characteristic on front).

The dead-bar level is defined by the Ud set value; below the said

value the bar is considered as not-fed.

3.5.1 DB dead-bar mode OFF

Any request of dead-bar synchronization is ignored.

3.5.2 DB dead-bar mode ON

The device checks that the generator frequency and voltage lie

within the limits defined by Dfg and DUg, by controlling the parallel

breaker closing without carrying out any adjusting action.

3.3 Frequency regulator

3.3.1Max. deviation rated frequency/ bar frequency

The device works by comparing the fb bar frequency with the fn

rated frequency.

When the deviation between the two frequencies exceeds theDfb

set value, the 'START request failed' command - due to fb out-

of-tolerance condition - as well as any signal corresponding to theevent are sent; the partial and total counter relative to the

mentioned event is incremented and the event logging is enabled.

3.3.2Max. deviation rated frequency/ generator frequency

The device works comparing the fg generator frequency with the

rated frequency.

When the deviation between the two frequencies exceeds the Dfg

set value, the 'START request failed' command - due to fg out-

of-tolerance condition - as well as any signal corresponding to the

event, are sent; the partial and total counter relative to the event


3.3.3 Max. frequency difference

The device works by comparing the fb bar frequency with the fg

generator frequency.

When the difference between the two frequencies exceed the Df

set value, the 'frequency increase' (if fg<fb) or 'frequency decrease'

(if fg>fb) command is sent.

The frequency increase/decrease commands can be of

'continuous' or 'pulse' type depending on the regulation mode that

has been set, that is CPf CONT or PULSE.

If the PULSE mode has been set, the pulse time is defined by the

tfpu set parameter; the min. pulse interval is given by the tfpa set

parameter.If the phase difference between bar and generator constantly lies

above the Dp set threshold, after a time interval equal to tfpm has

expired since the last frequency increase/decrease command,

the following types of desynchronization commands will be sent:

'frequency increase' in the event of SUPERSYNC live bar parallel

mode or 'frequency decrease' in the event of SUBSYNClive bar

parallel mode; in case of NORM live bar parallel mode the

'increase' command will be sent when the generator is in 'delay'

condition compared to the bar, whereas the 'decrease' command

will be sent when the generator is in 'advance' condition.

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3.5.3 DB dead-bar mode ON-CHECK

The device checks that the generator frequency and voltage lie

within the limits defined by Dfb and DUb: if these do not lie within

the mentioned limits, the device carries out all the adjusting

operations necessary to make them lie within the range of values

defined. The 'parallel breaker closing' command will be then sent.

3.6 Main and spare settings

The device can store two groups of settings, namely 'main' and

spare', which can be selected through keyboard, PC or network.

The group of setting being used is shown on the display as

'SETTINGS IN USE'.

Independently of the selection made, the device can be 'forced'

to use the SPARE settings. This 'forcing' can be carried out from

the network or by permanently enabling the digital input (IN DIG 1)

configured to such aim. This condition is signalled by the

characters <!> which appear near the group already selected;

when the input is disabled, the group of settings previously

selected is restored and the characters <!> disappear (see

paragraph 6.1.3).

4. ADDITIONAL FUNCTIONS

4.1 Diagnostics

Diagnostic activities are envisaged which are automatically carried

out upon powering on the device as well as from time to time

during the running, and which allow the following actions to be

performed:

- signalling fault or failure conditions. This signal de-energizesthe diagnostic relay, turns off the green LED (running device)

and turns on the red LED ( faulty device);

- locking out the device in the event of faults that might entail ill-

timed operation (VITAL FAULTS)

- displaying the code referring to the type of fault occurred.

The following faults are defined as NOT VITAL FAULTS:

- output relay (X1 - X5) faulty

- communication faulty

- internal clock faulty

The following faults are defined as VITAL FAULTS:

- feeder faulty

- EEPROM faulty

- internal or exteranl RAM faulty

- analog/digital converter faulty

In the event of vital faults the device automatically displays the

code relative to the kind of fault occurred; if allowed by the device,

this condition can only be solved by enabling the 'settings change'

command.

In the event that, upon starting up the equipment, an EEPROM

failure makes it impossible to retrieve the information on the

selected dialogue language, the device will continue on working

using Italian as default language.

The device includes the 'Watch Dog'.

The diagnostic activity is also aimed at signalling any condition of

'inhibited equipment': the relevant code is displayed, the diagnosticrelay is de-energized and the red LED (faulty device) lights on.

This condition can only be solved by enabling the 'settings

change' command.

The diagnostic menu also indicates the date when last changes

were made to the equipment.

4.2 Output circuits

The output circuits are composed of six relays: each of them is

provided with two contacts (see block diagram).

The X6 relay, normally energized, is strictly assigned to the

diagnostic function.

Each remaining relay, if duly programmed from the keyboard, PCor network, can be set to carry out one or more functions.

The operation of these six relays is of monostable type: that is,

it allows to immediate return to the quiescent position when the

cause that operated it is removed.

The output relays, except for the diagnostic relays, can all be

simultaneously set to 'normally energized' (NORMAL.ON=ON)

or to 'normally de-energized' (NORMAL.ON=OFF): the selection

occurs bymeans of the S1 jumper which is accessible when the

relay has been pulled out (see fig. 2a, 2b).

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4.3 LED signalling circuits

The signalling circuits are made up of twelve LEDs (see fig. 3).

Four LEDs are strictly assigned to previously established signalling

functions:

- green LED (Uaux) ON in the presence of power supply and

correct feeder output voltage values

- green LED (RUN) ON with fixed light in normal conditions and

blinking light during setting change or test operations

- red LED (RUN) ON with fixed light when the diagnostics

detects a fault or the device is inhibited.

- green LED (Rx Tx) ON with fixed light when the device is

correctly connected to the network; ON with blinking light when

the communication board is not enabled or configured; OFF

when the device is provided with no communication board.

Each of the eight remaining LEDs, if duly programmed from the

keyboard, PC or network, can be:

- assigned to one or more control outputs or, in the event of

failures or events,

- pre-set for :

- monostable operation; it immediately goes off when thecause that made it go on is removed

- bistable operation (MEMOR): the LED remains on until a

reset signal is sent from the front push-button, digital input or

serial connection. Any failure of auxiliary voltage entails the

momentary loss of the luminous signals, which are reset as

soon as the voltage is restored.

A pocket is provided close to the LEDs, where explanatory labels

can be placed.

4.4 Digital inputs

If duly programmed from the keyboard, PC or network, each of

the five optoinsulated inputs can be assigned to one or more of thefollowing functions referring to the device.

- Start LB

- Start DB

- Synchronism Stop

- Ch52 parallel breaker closing

- EXT1, EXT2 external failure

The factory settings envisage that the above mentioned functions

are assigned according to the block diagram (fig. 3).

The input voltage can differ from the auxiliary voltage of the

device.

The enabling of the digital inputs can be programmed by normally

energizing or de-energizing or on front or level.WARNING: the digital inputs associated with the Start LB

and Start DB functions must be ON on front , whereas all the

other functions must be ON on level.

4.5 Counters

Each type of tripping is associated with a partial or total counter

(see paragraph 6.1.7).

The counters work within the 0-9999 range; if 9999 is exceeded,

the counter is automatically set to zero and the counting restarts

from zero.

All the partial counters can be set to zero from the keyboard, from

PC or network.

4.6 Event log

When an event occurs, the following information is stored in

circulating memory:

- day, month, year, time, minute, second and thousandth of a

second concerning the tripping moment

- type of event

- bar frequency

- generator frequency

- bar voltage

- generator voltage

- phase difference

- total parallel time

- number of parallel attempts

All this information is called 'event'.

The circulating memory allows the last eight events to be stored,

and when this number is exceeded, a new record replaces the

older: the last event is stored as EVENT 1.

The stored events can be read from the front display unit or from

a PC serially connected to the device.

Furthermore, the device can store the last 32 changes of state(with relative date and time) and make them readable through PC

or network only.

4.7 Measurements

The device can display the effective current values concerning

the bar voltage expressed in Ubn multiples, the generator voltage

expressed in Ugn multiples, the bar and generator frequency

expressed in Hz, and the phase difference expressed in grades.

It also displays the effective current primary values relative to the

bar and generator voltage expressed in V.

4.8 Test

Besides the normal diagnostics already dealt with, the device

also offers, in the TEST mode, the possibility of testing the leds,

the display and the output relays.

- The LED test turns on all the LEDs from L1 to L8 and the

display unit (LCD) for two seconds.

Once the test is over, the LEDs that were supposed to be ON

before the test remain ON and the display unit goes back to the

previous information displayed; the test can be carried out

during any running condition, without affecting the operation in

progress.

- The relay test allows the output relays from X1 to X5 to be

sequentially selected and checked for correct operation. IN

this way, any external signalling or control circuit can be

tested.

The tested relay remains energized for 150 and 200 ms.

If commands are already present, the test cannot be carried

out and a message appears on the display unit.

The test on auxiliary relays does not affect counters, event

logs and LEDs.

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4.13 Serial communication on LONWORKS (TM) bus

In the version including the bus board, the device can communicate

with a central monitoring and control system at a speed of 1.2 5

Mbaud. The connection to the field bus is made through terminals:

43 and 45.

The communication board, which can even be added afterwards,

is enabled only if the special jumper is provided in S6, and is

disabled when the mentioned jumper is placed vertically between

S5 and S6 (see fig.1).

The positioning of the jumper in S6 without the above mentioned

communication board, causes, just as a faulty board, a failure

message to be displayed in the diagnostics function.

In the Appendix A all the data available for the network are shown.

4.9 Alphanumeric code

The device can be identified in the system by an alphanumeric

code, which can be set by the user directly on the equipment code

or from a PC. With a network-linked device, the alphanumeric

code can only be modified by operating through the network.

4.10 LanguageThe device can display information in four languages: Italian,

English, French and Spanish. The language can be selected

through the keyboard.

4.11 LCD settings

The display can be set for fixed (OFF) or timed (ON) backlighting;

in the last case, the display lights up for 300s any time a key is

pressed.

4.12 Inhibiting operation-deconfiguration from network

Inhibiting the device is useful in already operating systems, to

avoid troubles when a protection is to be fed with voltage whose

settings are not known or meant to be changed.

The inhibiting occurs by keeping the 'setting change' key pressed

for about 2s, and using auxiliary voltage simultaneously until the

following message is displayed:[ BLOC ][ ]

When the said key is released, the condition of the inhibited

device is signalled with a message in the P fault diagnostics.

The operation reset is only made possible by selecting the setting

change function, which is however enabled; a momentary loss

of the auxiliary voltage does not change the device inhibition state.

If the device is equipped with a network board, from the BLOC

condition, by furtherly keeping the setting change key pressed for

about 2s, the following message is displayed:[ NET RESET ? ][_ NO YES _]

If confirmed, the device can even leave its network configuration.

The complete network de-configuration and inhibiting procedure

is necessary every time the device must be replaced.

The reset of an inhibited and de-configured device entails the

displaying of K fault messages until a new setting of the device

itself has not been made.

The operation reset is only made possible by selecting the setting

change function, which is however enabled.

fig. 1

I CAUTION

Hazardous voltages canremain in the unit even in the absence

of power supply or after it has been pulled out of its casing

(capacitor storage).

TOP

RELAY

FRONT

view A-A

view A-A view A-A

BOARD

NOT

ENABLED

BOARD

ENABLED

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4.14 RS485 serial communication on MODBUS protocol

Devices with 2.00 and higher software versions can feature three

different kinds of communication:

- no communication board

(version MX3EG1A .11 and .12);

- LonWorks(TM) communication board


- Modbus communication board


The type of communication board installed is automatically

recognized.

In the event of device with LonWorks(TM) communication board it

is necessary to carry out the connection as provided for and set

all the connected devices. This is automatically possible by

connecting a PC equipped with PCLTA10 or SLTA10 board to a

CORMOX2 programme.

In the event of device with Modbus communication board, each

relay can be set through the front interface or through the IRMA2

programme installed on PC connected to the front serial port. The

configuration can be carried out even on relays which are stillconnected to one another and can be pre-set on files together

with other information.

The configuration of the Modbus communication board requires

the following parameters:

PARAMETER VALUE

Speed 300 Baud

600 Baud

1200 Baud2400 Baud4800 Baud

9600 Baud

19200 Baud38400 Baud

Parity NONE

EVEN

ODD

Data bits 78

Stop bits 12

Address 1 - 255 (0 broadcast)

These parameters can be modified in loco or from the network.

To this aim, the following extension of the 'RELAY DATA' has

been added :

[MX3EG1A ] relay type

[Sw Vers 2.00/01] software version

ñ ò

[PLANT IDENTIFIER]

[GenPan ] ðplant identifier

ñ ò

[SPEED 38400 Bb ] ðspeed setting

[PARITY NONE ] ðparity setting

ñ ò

[DATA BIT 8 ] ðdata bit setting[STOP BIT 1 ] ðstop bit setting

ñ ò

[ADDRESS 111 ] ðaddress setting

[ ]

Upon request, the message describing documents referring to the twodifferent versions, LonWorks(TM) and Modbus, can be supplied.

4.15 Oscilloperturbography

The device can record the course of the two input voltages - Ub

and Ug - and the logic states of the: 8 LEDs, 5 auxiliary relays and

5 digital inputs. The total recording time equals 2.5s, and can be

divided into variable time before start-up and variable time after

start-up. The oscilloperturbography function can be started for:

remote control (from PC or network) of Start LB or Start DB,

remote control of Stop, synchronization sequence correctly

concluded, synchronization sequence failed, digital input enabling.

The selection of the start parameters, the graphic display and the

oscilloperturbography function reset can be made through PC or

network. The function reset can also be enabled by interruptingthe auxiliary voltage for a short time.

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5. LOCAL INTERFACE Key It allows the menu to be scrolled to the

left and the value to change to be

selected if the settings change function

is enabled. [ï]

Key It allows the stored LEDs indications to

be reset if the cause has been removed,or the partial counters to be reset if they

are in the 'display counters' menu.

It sets the end relays to quiescent state

when they are set to bistable operation.

Key If pressed for at least 2s, this key

allows the settings to be changed; when

the settings change function is enabled,

the green LED (RUN) lights up blinking.

If pressed once again for at least 2sec.,

the system goes back to normal runningconditions and, provided that a

confirmation is given, the new settings

become the current ones (the key can

only be reached by removing the cover

lid). During the settings-change

operations the device continues

working with the old settings. If the

changes made are confirmed in the

presence of a fault, the changes are

not accepted until the event is over: the

interrupt state is signalled for 3sec by amessage on the display unit, after which

you are prompted to confirm the

changes made.

If pressed when feeding the device with

auxiliary voltage until a failure message

appears on the display, this key inhibits

the device from operating.

Keys If simultaneously pressed for at

least 2sec, these keys allow the

protection Test to be carried out. When

the testing activity is enabled, the green

LED (RUN) lights up blinking.

If simultaneously pressed for 2 sec.

during the TEST routing, these keys

enable you to leave the protection

testing mode.

The local interface is made up of:

- a LCD display unit organized on two lines of sixteen characters

each.

Through a special keyboard-controlled scanning, the display

unit enables the settings to be read and changed, the

measurements, the counters, the logged events and the

diagnostic information to be read.

- A keyboard made up of six keys, five of which can even be

reached when the cover lid is fitted through a special link.

In addition to the above-mentioned scanning, the keyboard is

also used to change the settings, carry out tests that require

commands to be sent and stored indications to be set to zero;

the keys that can be reached when the cover lid is fitted only

allow for read-out and reset operations.

Key It allows the menu to be scrolled

upwards or the value to be increased if

the settings change function is enabled.

[ñ]

Key It allows the menu to be scrolled

downwards or the value to be

decreased if the settings change

function is enabled. [ò]

Key It allows the menu to be scrolled to the

right or the value to change to be

selected if the settings change function

is enabled.[ð]

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- Twelve LEDs, four of which are rigorously associated with

general functions.

- A four-pin connector in compliance with FCC 68.

By means of a special optoelectrical adapter, an optical fibre

cable and RS232 optical converter, it allows the device to be

locally linked with a personal computer.

By means of a special interface programme, the PC enables

the settings to be read and changed, the measurements, thecounters, the logged events, the diagnostic information and

the oscilloperturbography to be read.

6. LCD MENU STRUCTURE

6.1 MAIN READING MENU

The device features a main menu that leads to several submenus

(tree-structure). All the displayed messages can be made

permanently.

[Ug Ugn] Current value of generator voltage[fg Hz ] Current value of generator frequency

ñ ò

[MENU: ITALIAN ] Dialogue language[ ] ð change dialogue language

ñ ò

[DATE ] current date and time[TIME ] ð change date and time

ñ ò

[SETTINGS IN USE ] display settings in use[ MAIN]

ñ ò

[SETTINGS READING] ð display main settings[MAIN ]

ñ ò

[SETTINGS READING] ð display spare settings[SPARE ]

ñ ò

[ MEASUREMENTS ] ð display/reset current and stored[ ] values

ñ ò

[ COUNTERS ] ð display counters and reset[P = RESETTABLE] partial counters

ñ ò

[ EVENTS ] ð display stored events[EVENT 1=LAST ]

ñ ò

[OUTPUT RELAYS ] ð display output relay[ ] configuration

ñ ò[ DIGITAL ] ð display digital inputs[ INPUTS ] configuration

ñ ò[ LED ] ð display LED configuration[ ]

ñ ò

[ RELAY DATA ] ð display model-software version[ ] and alphanumeric code

ñ ò

[ DIAGNOSTICS ] ð display failures[ ] last change date

All the following examples take their start form the main menu.

6.1.1 Changing dialogue language

The dialogue language is ITALIAN.

Here follows an example showing how to change the dialogue

language. Suppose we wish to set ENGLISH as the desired

language.

a) Press the key ò orñ until the following message appears on

the display:[MENU: ITALIAN ][ ]

b) By pressing the key ð the dialogue language function isenabled and the following message appears on the display:

[MENU: ITALIAN ][ ]

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c) By pressing the key ò or ñ the stored language menu isscrolled. For the purpose of our example, we must stop when the

following message appears:[MENU: ENGLISH ][ ]

d) By pressing the key ï the selected dialogue language is

confirmed and you go back to the main menu. The following

message appears on the display:[MENU: ENGLISH ][ ]

6.1.2 Changing date and time

Access to the 'change date/time' function is denied when the

protection is network-connected. If the network connection is

made after entering the change function, the local changes are

not enabled.

Suppose we wish to change the starting date 10/06/93 into 24/05/

95.

a) Press the keyò

orñ

until the display shows the followingmessage:[DATE 10/06/93]

[TIME 9:38:43]

b) By pressing the keyð the change function is enabled and the

display shows as follows:[DATE 10/06/93][TIME 9:38:43]

c) By pressing the key ð the value to be changed is selected.

Press the keyð six times to select the last digit that makes up

the date, the display will show as follows:[DATE 10/06/93]

[TIME 9:38:43]

d) By pressing the key ñ the value of the selected number isincreased. Hold the key pressed until the display shows:

[DATE 10/06/95]

[TIME 9:38:43]

e) By pressing the keyï , the fourth digit that makes up the date

is selected: the display will show:[DATE 10/06/95]

[TIME 9:38:43]

f) By pressing the keyò, the selected number is decreased until

the display shows:[DATE 10/05/95]

[TIME 9:38:43]

g) By pressing the keyï twice further, the second digit of the date

is selected and the display will show:[DATE 10/06/95]

[TIME 9:38:43]

h) By pressing the keyñ the selected number is changed (onreaching the number 9, the tens will go up by one unit) until the

display shows:[DATE 24/05/95]

[TIME 9:38:43]

i) Press the keyï until you move to the beginning of the line. Thedisplay will show:

[DATE 24/05/95]

[TIME 9:38:43]

j) By pressing the keyò the date-change function is enabled and

the steps to be followed are the same as those described from c)

to i).

The device does not accept time or date settings that do not exist.

The time counting starts upon moving from the digits that make

up the date to the wording TIME at the beginning of the line.

k) By pressing the keyï the changes made are confirmed and

you go back to the main menu: the display will show:

[DATE 24/05/95]

[TIME 9:38:43]

6.1.3 Displaying settings in use

a) Press the key ò orñ until the display shows:

[SETTINGS IN USE]

[ MAIN]

The second line will display the group of settings the device is

using.Any <!> possibly displayed, notwithstanding the contents of the

second line, indicates the device is working with the SPARE

settings.

[SETTINGS IN USE]

[ <!> MAIN]

The device will continue on working with the SPARE settings as

long as the 'settings-change' command sent by the IN DIG1

digital input remains enabled. When <!> characters disappear,

the device restarts working with the group of settings displayed.

6.1.4 Displaying main settings

a) Press the key ò orñ until the display shows:[SETTINGS READING][MAIN ]

b) Press the key ð to enter the 'main setting display' submenu

and the keysò orñ to scroll the submenu showing as follows:

rated frequency fn

bar rated voltage Ubn

generator rated voltage Ugn

closing pulse time tc

breaker closing time trmax. no.of parallel sequence attempts Ns

closing min. interval time twc

max. time for parallel sequence ts

stability time td

max. deviation rated frequency/bar frequency Dfb

max. deviation rated frequency/generator frequency Dfg

max. deviation bar voltage/rated voltage DUb

min. voltage generator voltage/rated voltage DUg

live bar mode LB

max. frequency difference Df

max. voltage difference DU

max. phase difference Dpdead-bar mode DB

dead-bar level Ud

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frequency regulation mode CPf

frequency regulation pulse time tfpufrequency regulation min. pause time tfpa

frequency regulation max. pause time tfpm

load pulse mode LP

load pulse time tlp

voltage regulation mode CPUvoltage regulation pulse time tupu

voltage regulation min. pause time tupabar primary rated voltage Ub TV

bar primary rated voltage Ub TV

c) By pressing the keyï anywhere in the submenu, you go back

to the main reading menu:[SETTINGS READING][MAIN ]

6.1.5 Displaying spare settings

a) Press the key ò orñ until the display shows:[SETTINGS READING][SPARE ]

b) By pressing the key ð you enter the spare setting display

submenu , and by pressing the keysò orñ you scroll the sub-

menus showing as follows:


generator rated voltage Ugnclosing pulse time tc

breaker closing time tr

max. no. of parallel sequence attempts Ns

closing min. interval time twc

max. time for parallel sequence ts

stability time tdmax. deviation rated frequency/bar frequency Dfb

max. deviation rated frequency/generator frequency Dfgmax. deviation rated voltage/bar voltage DUb

min. generator voltage/rated voltage DUg

live bar mode LBmax. frequency difference Df

max. voltage difference DU

max. phase difference Dp

dead-bar mode DB

dead-bar level Udfrequency regulation mode CPf

frequency regulation pulse time tfpu

frequency regulation min. pulse time tfpa

frequency regulation max. pulse time tfpm

load pulse mode LPload pulse time tlp

voltage regulation mode CPU

voltage regulation pulse time tupu

voltage regulation min. pause time tupa

bar primary rated voltage Ub TVbar primary rated voltage Ub TV

Those parameters that are not listed in the SPARE menu take the

same value as those listed in the MAIN settings menu.

c) By pressing theï anywhere in the submenu, you go back to

the main reading menu:[SETTINGS READING]

[SPARE ]

6.1.6 Displaying current measurements

a) Press the keyò orñ until the display shows:[ MEASUREMENTS ][ ]

b) By pressing the keyð you enter the measurements display

submenu and by pressing the keysòorñthe following submenu

is scrolled:

effective current value of bar voltage in multiples of Ubn Ubeffective current value of generator voltage in multiples of Ugn Ug

current value of bar frequency in Hz fb

current value of generator frequency in Hz fg

current value of phase difference expressed in grades Dp

effective current value of bar primary voltage in Volt Ub'effective current value of generator primary voltage in Volt Ug'

c) By pressing the ï anywhere in the submenu, you go back to

the main reading menu:[ MEASUREMENTS ]

[ ]

6.1.7 Displaying counters

a) Press the key ò orñ until the display shows:[ COUNTERS ][P = RESETTABLE]

b) By pressing the keyðyou enter the counter display submenu

and by pressing the keys ò or ñ the following submenu is

scrolled:

total trips caused by START request on LB failed due to fb or fg

or Ub or Ug out-of-rated tolerance

LB fU Fail T

partial trips caused by START request on LB failed due to fb orfg or Ub or Ug out-of-rated tolerance

LB fU Fail P

total trips caused by START request on DB failed due to fg or Ug

out-of-rated tolerance or present Ub (not-dead bar)DB fU Fail T

partial trips caused by START request on DB failed due to fg or

Ug out-of-rated tolerance or present Ub(not-dead bar)DB fU Fail P

total trips caused by LB synchronization sequence failed due to timeout

or on reaching the max. no. of parallel sequence attemptsLB Timeout T

partial trips caused by LB synchronization sequence failed due to

timeout or on reaching the max.no. of parallel attemptsLB Timeout P

total trips caused by DB synchronization sequence (ON-CHECK)

failed due to timeout or on reaching the max. no. of parallelattempts

DB Timeout T

partial trips caused by DB synchronization sequence (ON-

CHECK) failed due to timeout or upon reaching the max. no. ofparallel attempts

DB Timeout P

total trips caused by LB or DB synchronization sequence (ON-CHECK) interrupted by STOP command

STOP T

partial trips caused by LB or DB synchronization sequence (ON-

CHECK) interrupted by STOP commandSTOP P

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total trips caused by LB or DB synchronization sequence (ON-CHECK) interrupted by external event EXT1

EXT1 T

partial trips caused by LB or DB synchronization sequence (ON-CHECK) interrupted by external event EXT1

EXT1 P

total trips caused by LB or DB synchronization sequence (ON-

CHECK) interrupted by external event EXT2EXT2 T

partial trips caused by LB or DB synchronization sequence (ON-CHECK) interrupted by external event EXT2

EXT2 P

total trips caused by LB synchronization sequence correctlycarried out

SYNC LB OK T

partial trips caused by LB synchronization sequence correctlycarried out

SYNC LB OK P

total trips caused by DB synchronization sequence correctlycarried out

SYNC DB OK T

partial trips caused by DB synchronization sequence correctlycarried out

SYNC DB OK P

c) By pressing RESET you can reset the partial counter displayed.

d) By pressing the keyï anywhere in the submenu, you go back

to the main reading menu:[ COUNTERS ]

[P = RESETTABLE]

6.1.8 Displaying events


[ EVENTS ][EVENT 1=LAST ]

b) By pressing the keyðyou enter the submenu where the eight

events can be selected. The display will show:[EVEN.1 GG/MM/AA ][ hh:mm:ss.xxx ]

The first line displays the event number, the day, month and year,

whereas the second line lists the time, minutes, seconds andmilliseconds concerning the event.

c) By pressing the key ò or ñ you select the event to be

displayed. Once the selection has been completed, by pressing

the keyð, you will enter the event display submenu; by pressingthe keys ò orñ the following submenu is scrolled:

event type or cause (1)

bar frequency value in Hz at the time of the event

fb_E

generator frequency value in Hz at the time of the eventfg_E

bar voltage value in multiples of Ubn at the time of the event

Ub_E

generator voltage value in multiples of Ugn at the time of the eventUg_E

phase difference value in grades at the time of the event

Dp_Eparallel sequence total time expressed in minutes and seconds

at the time of the event ts_E

no. of parallel attempts at the time of the eventNs_E

(1) The causes that lead to an event are those listed in the previous

paragraph on counters.

d) By pressing the keyïanywhere in the submenu, you go back

to the event reading submenu; follow the steps described in c) to

display other events.Press the keyï anywhere in the submenu

to go back to the main reading menu:[ EVENTS ][EVENT 1=LAST ]

6.1.9 Displaying output relays

a) Press the key ò orñ until the display shows:[OUTPUT RELAY ][ ]

b) By pressing the key ð, you enter the submenu that displays

the allocation of auxiliary output relays. The display will show:[f+ ]

[REL X1....]

The first line displays the function that is associated with the relay

or relays shown in the second line.

Press the keys ò or ñ to scroll the submenu.

The functions the output relays are associated with are asfollows:

frequency-increase command f+

frequency-decrease command f-voltage-increase command U+

voltage-decrease command U-

52 parallel breaker closing command X52

The variable NORMAL.ON. indicates whether all the output relaysare pre-set to be normally energized or not.

c) Press the keyï anywhere in the submenu to go back to the

main reading menu:

[ OUTPUT RELAY ]

[ ]

6.1.10 Displaying digital inputs

a) Press the keyò orñ until the display shows:[ DIGITAL ][ INPUTS ]

b) By pressing the keyðyou enter the submenu that displays theallocation of the digital inputs.

The first displaying refers to the digital inputs to be enabled by

normal energizing (↑) or de-energizing (↓); the display unit willshow:

[IN DIG 12345]

[ENABLED ↑↑↑↑↑]

Press the keys ò or ñ to scroll the submenu.

The second displaying refers to the digital inputs to be enabled

on front (F) or on level (L); the display unit will show:[IN DIG 12345][FR/LEV LLLFL]

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By pressing the keysò orñyou can scroll the submenu until the

digital inputs are displayed which are associated with the differentfunctions. The display unit will show:

[Start LB ][IN DIG ...4.]

The first line displays the function the digital inputs shown in the

second line are associated with.

The functions that can be associated with the inputs are:

LB synchronization sequence start Start LB

DB synchronization sequence start Start DB

synchronization sequence stop STOP

52 parallel breaker closed CH 52external failure 1 An EXT 1

external failure 2 An EXT 2

switch to spare settings SETTING SWITCH

LED reset RESET LED

c) By pressing the keyïanywhere in the submenu, you go back

to the main reading menu:

[ DIGITAL ][ INPUTS ]

6.1.11 Displaying leds

a) Press the keyò orñ until the display shows:[ LED ][ ]

b) By pressing the keyðyou enter the submenu that displays the

allocation of the LEDs. The display will shows:[f+ ][LED L1.......]

The first line displays the function the LEDs shown in the secondline are associated with.

Press the keyò or ñ to scroll the submenu.

The functions the LEDs can be associated with are as follows:

frequency-increase command f+

frequency-decrease command f-

voltage-increase command U+

voltage-decrease command U-52 parallel breaker closing command X52

bar frequency out of tolerance >fb<

generator frequency out of tolerance >fg<

bar voltage out of tolerance >Ub<

generator voltage out of tolerance >Ug<

LB start failed due to incorrect parameters f / U LB fU FailDB start failed due to incorrect parameters f / U DB fU Fail

LB start failed due to Timeout LB Timeout

DB start failed due to Timeout DB Timeout

synchronization sequence interrupted by Stop Stopsynchronization sequence interrupted by Ext1 Ext1

synchronization sequence interrupted by Ext2 Ext2

LB synchronization sequence correctly carried out Sync LB OK

DB synchronization sequence correctly carried out Sync DB OK

It is furthermore possible to display the LEDs that are associated

with the following setting:

bistable operation MEMOR

c) By pressing the keyïanywhere in the submenu, you go back

to the main reading menu:[ LED ][ ]

6.1.12 Displaying relay data

a) Press the keyò orñ until the display shows:

[ RELAY DATA ][ ]

b) By pressing the keyðyou enter the submenu and the display

shows the device model and the software version:[MX3EG1A ]

[Soft Vers 001.00]

c) By pressing the key ò once again, the second line displays

the alphanumeric identification code the plant has given to thedevice. For instance:

[PLANT IDENTIFIER]

[CELL NO. 17bis ]


to the main reading menu:[ RELAY DATA ][ ]

6.1.13 Displaying diagnostics

1) Detecting faults

a) Press the keyò orñ until the display shows:[ DIAGNOSTICS ][ ]

In the event of VITAL FAULTS the device automatically displays

the window without any need to enter the diagnostics menu.

b) By pressing the keyðyou enter the submenu that displays the

relay running state. The display will show:[Last mod. Imp.][GG/MM/AA hh:mm]

The second line shows the day, month, year, time relative to the

last parameter modification.

c) By pressing the key ò once again, if the device has not

detected any failure, the display will show the following message:[ RUNNING ][ ]

In the event of NOT VITAL FAULTS, the display will show:[FAULT ]

[ABCDE.....KL ]

whereas in the event of VITAL FAULTS the characters <!> will bedisplayed:

[FAULT <!>]

[.....FGHIJ... ]

The second line shows one or more fault detecting codes.

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The following table describes the correspondence between the

fault code and the fault nature:

Code type of fault

A coil relay X1 interrupted or relative driver

B coil relay X2 interrupted or relative driver

C coil relay X3 interrupted or relative driver

D coil relay X4 interrupted or relative driver

E coil relay X5 interrupted or relative driverF internal feeder faulty

G EEPROM not running

H internal RAM not running

I external RAM not running

J analog/digital converter

K communication board faulty or board enabled

but not pre-set

L internal clock not running

The placing of the communication-board enabling S6 jumper

(see fig.1) without the said board, just as for any fault, causes the

K code to appear.

d) In the event of NOT VITAL FAULTS, by pressing the keyï

anywhere in the submenu, you go back to the main reading menu:[ DIAGNOSTICS ][ ]

whereas in the event of VITAL FAULTS you can only leave the

diagnostics submenu - if allowed by the device - by enabling thechange menu.

2) Inhibited device

If the device is inhibited or not configured, the following window will

be displayed:[FAULT <!>][.............P ]

You can only leave this condition by enabling the 'settings

change' function (it is however necessary to confirm SAVE

CHANGES even if no device setting has been changed).

Caution:

the set parameters must be displayed in the change menu as the

device can only be restarted by leaving this condition.

If, upon inhibiting the device, this is also not configured, the return

to the running condition will lead to the displaying of the K fault

messages until a new configuration is carried out (see paragraph4.12).

6.2 MAIN SETTING CHANGE MENU

By pressing the key anywhere in the reading menu for

at least two seconds, you enter the main change menu. Thence,

several submenus can be entered (tree-structure). When the

change function is enabled, the green LED (RUN) lights up and

blinks.

If the setting change function is already enabled in use through a

PC or the network, the local setting is inhibited and the following

message will be displayed:[ SETTING CHANGE ]

[ NOT AVAILABLE ]

The access priority for the setting change function among PC,

network and keyboard is of time-dependent.

During the setting change operations the device continues on

working using the old settings.

All the displayed messages can be made permanently.

[SETTINGS IN USE] settings in use

[ MAIN] ð selection of current setting group

ñ ò

[SETTINGS CHANGE ] ð change main setting values

[MAIN ]

ñ ò

[SETTINGS CHANGE ] ð change spare setting values

[SPARE ]

ñ ò

[ OUTPUT RELAY ] ðoutput relay configuration[ ]

ñ ò

[ DIGITAL ] ðdigital inputs configuration

[ INPUTS ]

ñ ò

[ LED ] ð LED configuration[ ]

ñ ò

[ RELAY DATA ] ðalphanumeric code setting

[ ]

ñ ò

[ LCD ] ðpermanent display back-lighting

[AUTOMATIC RETURN] (LCD) enabled

By pressing the key for at least two seconds anywhere

in the change menu, you go back to the main reading menu but

you are first prompted to confirm the changes made:

[SAVE CHANGES]

[< NO YES >]

By pressing the key ï the changes made will be discarded,whereas by pressing the key ð they are confirmed.

The green LED ( RUN) stops blinking and becomes fixed.

If, on confirming the changes, any start or trip is occurring, the

settings are not accepted as long as the event persists (fault or

enabling). This state is signalled for 3 sec. by the following

message:

[CHANGE SETTINGS ]

[DELAYED ]

You are then prompted to confirm the changes made again.

Note: the setting change function can even be enabled when the

device is 'forced' to use the SPARE settings. In this case, the

system only interrupts the selection of SETTINGS IN USE: MAIN

until the external forcing signal disappears.

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If a setting change is made when the system is 'forced' from the

outside, the following message will be displayed for a few seconds:

[SPARE SETTINGS IN USE]

[FROM EXTERNAL CONTROL]

All the following examples take their start from the main change

menu.

6.2.1 Selecting current setting group


[SETTING IN USE]

[ MAIN]

b) By pressing the key ð you current settings can start being

changed. The display will show:

[SETTINGS IN USE]

[ MAIN]

c) By pressing the keyò orñ the display will show:

[SETTINGS IN USE][ SPARE]

d) By pressing the keyï the new selection is confirmed and the

system goes back to the main change menu.The display will

show:

[SETTINGS IN USE]

[ SPARE]

6.2.2 Changing main settings

a) Press the key ò orñ until the display shows:[ SETTINGS CHANGE][MAIN ]

b) By pressing the key ð you enter the main setting submenu

containing the parameters already listed in paragraph 6.1.4.

c) Press the key ò orñ to scroll the submenu and the key ð

to start changing the displayed parameter. The change can be

made by using the keysò orñ.

d) By continuing pressing the keyï anywhere in the submenu,

you go back to the main change menu:

[SETTINGS CHANGE ]

[MAIN ]

Example of setting procedure

Suppose we must enable and set the Dfb a ± 1% threshold

starting from the initial setting of ± 2%.

Follow the steps described in a) and b).

Press the key ò or ñ until the display shows the selected

threshold to be changed:

[Dfb ± 2% ]

[Dfg ± 15% ]

Press the keyð to select the digit to be changed.

In our example, by pressing the keyð once, the display will show:

[Dfb ± 2% ]

[Dfg ± 15% ]

By pressing the keyñ orò the selected number is increased or

decreased until the desired value is reached; in our example, by

pressing the keyò once, the display will show:

[Dfb ± 1% ]

[Dfg ± 15% ]

Press the keyï the cursor goes back to the beginning of the line

and the system goes back to the main change menu:[ SETTINGS CHANGE ]

[ MAIN ]

6.2.3 Changing spare settings

a) Press the key ò orñ until the display shows:[SETTINGS CHANGE ][SPARE ]

b) By pressing the key ð you enter the spare settings change

submenu, containing the parameters already listed in paragraph6.1.5.

c) Press the keys ò orñ t o scroll the submenu and the key ð

to start changing the selected parameter. The change can be

made by using the keys ò orñ.

The change procedure is similar to the one shown in the previous

example relative to main settings change.

d) By pressing the keyï anywhere in the submenu, you go back

to the main change menu:[ SETTINGS CHANGE ]

[ SPARE ]

6.2.4 Setting output relays


[ OUTPUT RELAY ]

[ ]

b) By pressing the key ð you enter the output relay setting

submenu, containing the parameters already listed in paragraph

6.1.9, except for NORMAL.ON (whose setting is implemented as

described in paragraph 4.2).

c) Press the keys ò orñ to scroll the submenu and the key ð


made by using the keys ò orñ .

d) By pressing the keyïanywhere in the submenu you go backto the main change menu:

[ OUTPUT RELAY ]

[ ]

Example of allocation

Suppose we must allocate the f+ frequency-increase command

to the X2 output relay, by starting from the initial configuration f+

allocated to X1.

Follow the steps described in a) and b).

Press the keyò orñ until the display shows:

[f+ ]

[REL X1....]

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Each position after the X letter corresponds to an output relay.

More relays can be associated with the same function.

Press the key ð to move back to the relay that you wish to

associate with the function.

In our example, by pressing the ð twice, the display shows:

[f+ ]

[REL X1....]

By pressing the key ò orñ the X2 selected relay is associated

and the display shows:

[f+ ]

[REL X12...]

By pressing the keyï the first relay is selected. The display will

show:

[f+ ]

[REL X12...]

By pressing the keyò orñ the selected relay is dissociated. The

display will show:

[U> TRIP]

[REL X.2...]

Press the keyï to move back to the beginning of the line and go

back to the main change menu:

[ OUTPUT RELAY ]

[ ]

6.2.5 Setting digital inputs

a) Press the keyò orñ until the display shows:

[ DIGITAL ]

[ INPUTS ]

b) By pressing the key ð you enter the digital input setting

submenu containing the parameters already listed in paragraph

6.1.10.

c) Press the keysò orñ to scroll the submenu and the key ð



The setting procedure is similar to the one described in the

example for the output relay setting.

It is necessary to use the digital input number 1 (IN DIG 1) to

switch the settings from main to spare. SETTINGS SWITCH

It is necessary to use the digital input number 3 (IN DIG 3) to reset

the LEDs) RESET LED


to the main change menu:

[ DIGITAL ]

[ INPUTS ]

6.2.6 Setting LEDs

a) Press the keyò

orñ

until the display shows:[ LED ][ ]

b) By pressing the key ð you enter the LED setting submenu

containing the parameters already listed in paragraph 6.1.11.

c) Press the keysò orñ to scroll the submenu and the key ð

to start changing the displayed parameter. The change can be


The setting procedure is similar to the one described in the

example for output relay setting.


to the main change menu:[ LED ]

[ ]

6.2.7 Setting alphanumeric code

a) Press the key ò or ñ until the display shows:[ RELAY DATA ]

[ ]

b) By pressing the key ð you can start setting/changing thedevice identification alphanumerical code. The display will showfor instance:

[IDENTIF. USER ]

[CELL NO. 17bis ]

c) By pressing the keyðagain the character or characters to be

changed are selected and by pressing the key ò or ñ all thecapital and small letters of the alphabet, all the number and some

special characters, among which the blank space, are verticallyscrolled.

d)By pressing the keyï the cursor moves back to the beginning

of the line (no selected character) and pressing the keyï once

again, you go back to the main change menu:[ RELAY DATA ]

[ ]

6.2.8 LCD back-lighting

a) Press the key ò orñ until the display shows:[ LCD ][AUTOMATIC RETURN]

b) By pressing the key ð you can set the LCD back-lighting to

permanent (OFF) or to timed (ON). Suppose the display shows:[ ON ][ ]

c) Press the keys ò or ñ to change the setting:[ OFF]

[ ]

d) By pressing the keyïyou go back to the main change menu:[ LCD ][AUOTMATIC RETURN]

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6.3 TEST MENU

By pressing the two keys for at least two

seconds anywhere in the main reading menu, the TEST function,

which is highlighted by the blinking of the green LED (RUN), is

enabled.

[TEST LED]

[ YES>] ð TEST of Leds L1-L8 and display

ñ ò

[TEST RELAY X1]

[ YES>] ð TEST of relay X1

ñ ò

[TEST RELAY X2]


ñ ò

[TEST RELAY X3]


ñ ò

[TEST RELAY X4]


ñ ò

[TEST RELAY X5]


The test foreseen for X.. auxiliary relay caused the tripping of the

same. The associated command and/or signalling can therefore

be sent. This is why, before running it, the system prompts you

to further confirm:[ CONFIRM? ]

[< NO YES>]

if, upon confirming the execution, LB or DB synchronizationcycles are already present, the test is not performed and this

condition is signalled by the following example:

[TEST ]

[NOT AVAILABLE ]

The test on leds and display makes these light up for two seconds

and can be carried out during any operating condition.

By pressing the two keys for two seconds

anywhere in the test menu, the TEST function is disabled; the

green LED (RUN) stops blinking and the system goes back to the

main reading menu.

7. APPLICATION AND USE

This useful and versatile device allows the automatic parallel of

generators of any type and dimensions to be carried out.

It can be used with line or star voltages and, in the event of TV

installed up- or downstreams an odd group step-up transformer,

with a star or line voltage without the application of any TV

adapter.

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8. INSTALLATION - TRANSPORT

8.1 ESD electrostatic charges

The device uses electronic components that are sensitive to

electrostatic charges; therefore, the operator who happens to

handle the moving part of the equipment and come into contact

with the electronc circuits, must take preventive measures to

avoid damaging the relay:- before removing the moving part, the operator shall reach the

same potential as the unit by touching the housing (for instance,

the cover grips);

- avoid touching electronic components, printed circuits and

connectors;

- lay the element on surfaces that are antistatic or feature zero

potential.

As far as the following action is possible, do not pull out the moving

part from the casing to avoid causing mechanical and electrostatic

damages to the protection.

8.2 Acceptance-storage

Although protective relays are generally of solid construction,

they require to be handled with particular care before being

installed on site. They must be carefully packed and unpacked

without applying any force and using suitable tools.

Once supplied, the relays must be throughly inspected to ensure

that they have been not damaged during the transport.

If the relays are not immediately installed upon reception, they

must be stored in places free from dust or moisture, in their

original casing.

Storage temperature: -25°C + 80°C.

8.3 Assembling and connection

- Remove the protection guard to allow the four fastening holes

to be reached.

- Place the device into the hole of the panel-board and secure it

by fastening the four screws (see fig. 4).

- Connect the ground screw of the device to the panel's grounding

system through a cable of suitable gauge (>4mm2) and shortest

length (<1m).

- Perform the wiring using the screw or faston couplings of the

interface terminal boards. In order to guarantee the terminal

board the protection class IP20 required, during the faston wiring

the cover lid must be placed before the faston is connected to therelay. During the screw wiring the side fins of the IP20 cover lid

corresponding to the wired terminals must be removed or bent.

The assembling as well as the connections shall be workmanlike

performed.

9. SETTING THE UNIT AT WORK

The device is supplied with factory settings and configurations as

indicated in tables A, B and C (factory settings).

These settings may prove not to suit the specific plant where the

unit is to be installed. Therefore, the device must be reset: to this

aim, refer to tables D, E and F for customer's use as support to

develop a customised setting scheme.

9.1 Safety regulations

During the equipment tests and start-up the general safety

regulations applicable to electrical systems must be complied

with. Failure to comply with the above-mentioned regulations

might cause harm to personnel or damage to property. All the

inspections and tests shall be carried out by specially trained

personnel.

9.2 Checking nameplate ratings

Make sure that the equipment ratings are consistent with those of

the system, namely:- auxiliary voltage

- output relays normally energized or normally de-energized; the

control must be carried out by checking the position of the

cordless plug placed on the board (see fig. 2a, 2b)

- the presence of the special S6 cordless plug, see fig.1, if the

communication board is included and the network is available.

I CAUTION

Hazardous voltages can remain in the unit even in the

absence of power supply, or after it has been pulled out of

its casing (capacitor storage).

9.3 Final inspection

Feed the device with auxiliary voltage. On starting the device after

a long time of power failure, the device can show a fault of 'L' type

(internal clock), a NOT VITAL fault which does not affect the

remaining functions: please, update DATE and TIME to restore

normal conditions.

If the system is running and the device settings are unknown, in

order to avoid any malfunctioning, it is necessary to inhibit the

device operation, before using the auxiliary voltage, by pressing

the setting change key (see paragraphs 4.12 and 6.1.13).

Select the rated frequency of the system, the Ub (bar side) and

Ug (generator side) rated voltages and set the TV primary voltage

values.

Load the settings and configure relays, leds, digital inputs as

provided for in the design plan.

As the device is provided with a self-monitoring system, all

hardware and software failures are automatically signalled: this

makes it useless to control the thresholds for accuracy, which

can however be tested by making reference to the stated

tolerances.

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MDE/A133 2295 001MX3EG1A

In any case, it is advisable to carry out the following tests:

Feeder test

- Check that the burden of the auxiliary voltage circuit falls

within 5 and 10W as regards d.c. supply, and within 10 and

20VA as regards a.c. supply.

The feeder is protected by a special 5x20 rapid fuse, class

IEC127/II of 2A as regards unit with 19-100Vcc (or 19-72Vca)

auxiliary voltage, and of 1A as regards unit with 64-300Vcc (or

64-275Vca) auxiliary voltage.

Checking connections

- Apply a voltage signal to bar side and generator side TVs and

ensure that these correspond to the indications shown in the

MEASUREMENTS menu.

-Check each output relay by following the procedure described

in the TEST MENU paragraph: simultaneously check the

relevant external circuit.

- Make sure that the digital input wiring corresponds to the one

provided for in the design plans.

If the relay has not worked correctly or indicates failures of VITALtype, it must be put out of order and sent back to the factory for

repair or re-gauging.

Any NOT VITAL failure does not lead to an immediate tripping:

however, it requires the type of fault to be analysed so as to

determine the relative entity (for instance, a not running relay

might be replaced with another not used or whose function is

however not essential).

The interchangeability of the devices makes it possible to refer

to the protection diagram during any repairing action, replacing

the faulty device with one of the same type.

To complete the start-up stage, before setting the system at

work, ensure that:

- the device settings are consistent with the ones of the design

- the device shows the correct identification alphanumeric

code, if any

- all the device memories (leds, max. values, partial counters,

and wear index) have been reset

- the Uaux and RUN green leds are lit up; in case of network

connection, the RxTx green led must also be lit up

- the LEDs indicating labels and the general rating plate of the

device bear the correct information.

You can leave the device with the display showing any of the

windows of the main reading menu.

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MDE/A133 2295 001MX3EG1A

NORMALLY DE-ENERGIZED RELAYS

Jumper positionn S1

NORMALLY ENERGIZED RELAYS

Jumper positionnS1

fig. 2a fig. 2b

TOP

RELAY

FRONT

TOP

RELAY

FRONT

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MDE/A133 2295 001MX3EG1A

fig. 3

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MDE/A133 2295 001MX3EG1A

OVER-ALL DIMENSIONS

DRILL TEMPLATE TERMINAL ARRANGEMENT

The casing can also be placed in a19" rack panel of R4MX3 type, 4U inheight

fig. 4

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MDE/A133 2295 001MX3EG1A

WARNING:

Factory settings may prove not to suit the plant. Therefore, the device must be configured anew on installation.

CONTROL MATRIX DIGITAL

INPUTS

DESCRIPTION FUNCTION 1 2 3 4 5

active input de-energized

active input on level X X X X

LB synchronization sequencestart Start LB X


synchronization sequence stop Stop Synchronism X

52 parallel breaker closed Ch 52 X

external failure 1 Failure Ext1

external failure 2 Failure Ext2

spare settings switch SETTINGS SWITCH / / / /

LED reset RESET / / / /

/ not to be allocated

X allocated

Table B - FACTORY CONFIGURATION

Table A - FACTORY SETTINGS

RELAY CONTROL MATRIX LEDS1 2 3 4 5 DESCRIPTION FUNCTION 1 2 3 4 5 6 7 8

X frequency-increase command f+ X

X frequency-decrease command f- X

X voltage-increase command U+ X

X voltage-decrease command U- X

X 52 parallel breaker closing command X52 X

/ / / / / bar frequency out of tolerance >fb< X

/ / / / / generator frequency out of tolerance >fg< X

/ / / / / bar voltage out of tolerance >Ub< X

/ / / / / generator voltage out of tolerance >Ug< X

/ / / / / LB start failed due to wrong parameters f/U LB fU Fail X / / / / / DB start failed due to wrong parameters f/U DB fU Fail

/ / / / / LB synchronization sequence failed due to Timeout LB Timeout X

/ / / / / DB synchronization sequence failed due to Timeout DB Timeout

/ / / / / synchronization sequence interrupted by Stop Stop X

/ / / / / synchronization sequence interrupted due to Ext1 Ext1

/ / / / / synchronization sequence interrupted due to Ext2 Ext2

/ / / / / LB synchronization sequence correctly carried out Sync LB OK

/ / / / / DB synchronization sequence correctly carried out Sync DB OK

/ / / / / bistable operation MEMOR X

end relays normally de-energized / not to be allocatedX allocated

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MDE/A133 2295 001MX3EG1A

WARNING:

Factory settings may prove not to suit the plant. Therefore, the device must be configured anew on installation.

SPARE

ON OFF VALUE

/ / /

100.0 V

100.0 V

0.30 s

0.10 s

1

2.00 s

15 min

0.2 s

2 %

15 %

4 %

80 %

NORM

0.10 Hz

5 %

10 °

X

0.02 Ubn

PULSE

0.20 s

2.00 s

30.00 s

X

0.50 s

CONT

0.20 s

2.00 s

6000 V

6000 V

/ / /

/ / /

TABLE OF SETTINGSDESCRIPTION FUNCTION MAIN

ON OFF VALUE

rated frequency fn 50 Hz

bar rated voltage Ubn 100.0 V

generator rated voltage Ugn 100.0 V

closing pulse time tc 0.30 s

breaker closing time tr 0.10 s

max. number of parallel sequence attempts Ns 1

closing interval min. time twc 2.00 s

parallel sequence max. time ts 15 min

stability time td 0.2 s

max. deviation bar frequency/rated frequency Dfb (±) 2 %

max. deviation generator frequency/rated frequency Dfg (±) 15 %

max. deviation bar voltage/rated voltage DUb (±) 4 %

min. generator voltage/rated voltage DUg 80 %

live bar mode (LB) LB NORM

max. frequency difference Df (±) 0.10 Hz

max. voltage difference DU (±) 5 %

max. phase difference Dp(±) 10 °

dead bar mode (DB) DB X

dead bar level Ud 0.02 Ubn

frequency regulation mode CPf PULSE

frequency regulation pulse time tfpu 0.20 s

frequency regulation min. pause time tfpa 2.00 s

frequency regulation max. pause time tfpm 30.00 s

load pulse mode LP X

load pulse time tlp 0.50 s

voltage regulation mode CPU CONT

voltage regulation pulse time tupu 0.20 s

voltage regulation min. pause time tupa 2.00 s

bar primary rated voltage Ub TV 6000 V

generator primary rated voltage Ug TV 6000 V

oscilloperturbography trigger SINC. OK

oscilloperturbographt pretrigger time 2 s

settings in use: MAIN LCD timed backlighting: OFF

Table C - FACTORY SETTINGS

/ not to be allocated: the same values as MAIN

settings apply

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MDE/A133 2295 001MX3EG1A

Table D

Table E

RELAY CONTROL MATRIX LEDS

1 2 3 4 5 DESCRIPTION FUNCTION 1 2 3 4 5 6 7 8

frequency-increase command f+frequency-decrease command f-

voltage-increase command U+

voltage-decrease command U-

52-parallel breaker closing command X52

/ / / / / bar frequency out of tolerance >fb<

/ / / / / generator frequency out of tolerance >fg<

/ / / / / bar voltage out of tolerance >Ub<

/ / / / / generator voltage out of tolerance >Ug<

/ / / / / LB start failed due to wrong parameters f / U LB fU Fail

/ / / / / DB start failed due to wrong parameters f / U DB fU Fail

/ / / / / LB synchronization sequence failed due to Timeout LB Timeout / / / / / DB synchronization sequence failed due to Timeout DB Timeout

/ / / / / synchronization sequence interrupted by Stop Stop

/ / / / / synchronization sequence interrupted by Ext1 Ext1

/ / / / / synchronization sequence interrupted by Ext2 Ext2

/ / / / / LB synchronization sequence correctly carried out Sync LB OK

/ / / / / DB synchronization sequence correctly carried out Sync DB OK

/ / / / / bistable operation MEMOR

end relays normally de-energized / not to be allocated

end relays normally energized

CONTROL MATRIX DIGITAL

INPUTS

DESCRIPTION FUNCTION 1 2 3 4 5

active input de-energized

active input on level

LB synchronization sequence start Start LB


synchronization sequence stop Stop Synchronism

52-parallel breaker closed Ch 52

external failure 1 Anomalia Ext1

external failure 2 Anomalia Ext2

switch to spare settings SETTINGS SWITCH / / / /

LED reset RESET / / / /

/ not to be allocated

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MDE/A133 2295 001MX3EG1A

Table F

SPARE

ON OFF VALUE

/ / /

/ / /

/ / /

TABLE OF SETTINGS

DESCRIPTION FUNCTION MAIN

ON OFF VALUE

rated frequency fn


generator rated voltage Ugn

closing pulse time tc

breaker closing time tr

max. number of parallel sequence attempts Ns

closing interval min. time twc

parallel sequence max. time ts

stability time td

max. deviation bar frequency/rated frequency Dfb (±)

max. deviation generator frequency/rated frequency Dfg (±)

max. deviation bar voltage/rated voltage DUb (±)

min. generator voltage/rated voltage DUg

live bar mode (LB) LB

max. frequency difference Df (±)

max. voltage difference DU (±)

max. phase difference Dp(±)

dead bar mode (DB) DB

dead bar level Ud

frequency regulation mode CPf

frequency regulation pulse time tfpu

frequency regulation min. pause time tfpa

frequency regulation max. pause time tfpm

load pulse mode LP

load pulse time tlp

voltage regulation mode CPU

voltage regulation pulse time tupu

voltage regulation min. pulse time tupa

bar primary rated voltage Ub TV

generator primary rated voltage Ug TV

oscilloperturbography trigger

oscilloperturbography pretrigger time

settings in use: MAIN LCD timed backlighting: ON

settings in use: SPARE LCD timed backlighting: OFF

/ not to be allocated: the same values as

MAIN settings apply

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MDE/A133 2295 001MX3EG1A

APPENDIX A - Network data exchange

DESCRIPTION DIRECTION TIMING

Identification

trade name (12 characters) relay —> centre ARsoftware version (format x.xx) relay —> centre AR

user name (16 characters) relay —> centre AR

Settings data (main and spare)

group of settings in use relay —> centre —> relay ARdate - 00YYMMDD notation BCD relay —> centre —> relay AR

time - 00HHMMSS notation BCD relay —> centre —> relay ARlanguage MMI relay —> centre —> relay AR

rated frequency (50/60 Hz) relay —> centre —> relay AR

lcd setting relay —> centre —> relay ARoscilloperturbography pretrigger time relay —> centre —> relay AR

oscilloperturbography trigger cause relay —> centre —> relay ARbar rated voltage relay —> centre —> relay AR

generator rated voltage relay —> centre —> relay AR

parallel sequence max. time relay —> centre —> relay AR

numero massimo tentativi parallelo relay —> centre —> relay ARclosing interval min. time/ 52 CH contact max. wait time relay —> centre —> relay ARmax. deviation bar frequency/rated frequency relay —> centre —> relay AR

max. deviation generator frequency/rated frequency relay —> centre —> relay AR

max. deviation bar voltage/rated voltage relay —> centre —> relay ARmax.deviation generator voltage/rated voltage relay —> centre —> relay AR

closing pulse time relay —> centre —> relay ARclosing delay relay —> centre —> relay AR

stability time relay —> centre —> relay AR

live bar mode relay —> centre —> relay ARmax. frequency difference relay —> centre —> relay AR

max. voltage difference relay —> centre —> relay ARmax. phase voltage relay —> centre —> relay AR

dead bar mode relay —> centre —> relay AR

dead bar max. value relay —> centre —> relay ARfrequency regulation mode relay —> centre —> relay AR

frequency regulation pulse time relay —> centre —> relay ARfrequency regulation min. pulse time relay —> centre —> relay AR

frequency regulation max. pulse time relay —> centre —> relay AR

load pulse mode relay —> centre —> relay ARload pulse time relay —> centre —> relay AR

voltage regulation mode relay —> centre —> relay ARvoltage regulation pulse time relay —> centre —> relay AR

voltage regulation pause time relay —> centre —> relay AR

bar ratio of transformation relay —> centre —> relay ARgenerator ratio of transformation relay —> centre —> relay AR

Current measurementsbar frequency relay —> centre T e AR

generator frequency relay —> centre T e ARbar voltage relay —> centre T e AR

generator voltage relay —> centre T e ARbar/generator phase difference relay —> centre T e AR

bar-side primary rated voltage relay —> centre T e AR

generator-side primary rated voltage relay —> centre T e AR

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MDE/A133 2295 001MX3EG1A


Event chronogical recorder relay —> centre VP and AR

date and time (00AAMMGG HHMMSSCC in BCD notation) relay —> centre VP and ARLB starts failed due to out-of-tolerance parameters f/U relay —> centre VP and AR

DB starts failed due to out-of-tolerance parameters f/U relay —> centre VP and ARLB starts failed due to timeout ts> or Ns> relay —> centre VP and AR

DB starts failed due to timeout ts> or Ns> relay —> centre VP and AR

LB synchronism sequences correct relay —> centre VP and ARDB synchronism sequences correct relay —> centre VP and AR

digital input no. 5 relay —> centre VP and ARdigital input no. 4 relay —> centre VP and AR

digital input no. 3 relay —> centre VP and AR

digital input no. 2 relay —> centre VP and ARdigital input no. 1 relay —> centre VP and AR

States

synchronizer statet relay —> centre AV (a.p.)

digital input no.5 relay —> centre AV (a.p.)digital input no.4 relay —> centre AV (a.p.)

digital input no.3 relay —> centre AV (a.p.)digital input no.2 relay —> centre AV (a.p.)

digital input no.1 relay —> centre AV (a.p.)

Counters

total counter LB starts failed due to out-of-tol. parameters f/U relay —> centre ARtotal counter DB starts failed due to out-of-tol. parameters f/U relay —> centre AR

total counter LB starts failed due to timeout ts> or Ns> relay —> centre AR

total counter DB starts failed due to timeout ts> or Ns> relay —> centre ARtotal counter STOP controls relay —> centre AR

total counter sequence interruption due to input EXT1 relay —> centre ARtotal counter sequence interruption due to input EXT2 relay —> centre AR

total counter synchronism sequences on LB correct relay —> centre AR

total counter synchronism sequences on DB correct relay —> centre ARpart.counter LB starts failed due to out-of-tol. parameters f/U relay —> centre AR

part.counter DB starts failed due to out-of-tol.parameters f/U relay —> centre AR

part.counter LB starts failed due to timeout ts> or Ns> relay —> centre ARpart.counter DB starts failed due to timeout ts> or Ns> relay —> centre AR

part.counter STOP controls relay —> centre ARpart.counter sequence interruption due to input EXT1 relay —> centre AR

part.counter sequence interruption due to input EXT2 relay —> centre AR

part.counter synchronism sequences on LB correct relay —> centre ARpart.counter synchronism sequences on DB correct relay —> centre AR

Events

Date RTC relay —> centre AR

Time RTC + milleseconds relay —> centre ARBar frequency relay—> centre AR

Generator frequency relay —> centre AR

Bar voltage relay —> centre ARGenerator voltage relay —> centre AR

Generator/bar phase relay —> centre ARParallel time from Start contr. relay —> centre AR

No. of attempts relay —> centre AR

Output relays

configuration X1 relay —> centre —> relay ARconfiguration X2 relay —> centre —> relay AR

configuration X3 relay —> centre —> relay ARconfiguration X4 relay —> centre —> relay AR

configuration X5 relay —> centre —> relay AR

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MDE/A133 2295 001MX3EG1A


LEDs

configuration L1 relay —> centre —> relay ARconfiguration L2 relay —> centre —> relay AR


configuration L5 relay —> centre —> relay AR


configuration L8 relay —> centre —> relay AR

Digital inputs

configuration input 1 relay —> centre —> relay ARconfiguration input 1 active HIGH/LOW relay —> centre —> relay AR

configuration input 2 relay —> centre —> relay ARconfiguration input 2 active HIGH/LOW relay —> centre —> relay AR

configuration input 3 relay —> centre —> relay AR

configuration input 3 active HIGH/LOW relay —> centre —> relay ARconfiguration input 4 relay —> centre —> relay AR

configuration input 4 active HIGH/LOW relay —> centre —> relay ARconfiguration input 5 relay —> centre —> relay AR

configuration input 5 active HIGH/LOW relay —> centre —> relay AR

Diagnostics

State relay 1 relay —> centre AVState relay 2 relay —> centre AV

State relay 3 relay —> centre AV

State relay 4 relay —> centre AVState relay 5 relay —> centre AV

State feeder (POWER FAIL signal) relay —> centre AVState EEPROM relay —> centre AV

State internal RAM µP relay —> centre AV

State external RAM relay —> centre AVState analog chain relay —> centre AV

State network communication relay —> centre AV

State calendar_clock relay —> centre AVState operation stopped by operator request in start-up relay —> centre AV

Reset

LED centre —> relay AR

relay centre —> relay ARresettable counters centre —> relay AR

Controls

output relay enabling centre —> relay AV and AR

settings switch - main -> spare centre —> relay AVsettings switch survival time centre —> relay AR

OscilloperturbographyOscilloperturbography starting parameters relay —> centre —> relay AR

Oscilloperturbography pretrigger timer relay —> centre —> relay AROscilloperturbography trigger command centre —> relay AR

Oscilloperturbography reset command centre —> relay AROscilloperturbography data relay —> centre AR

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MDE/A133 2295 001MX3EG1A


Clockdate (format: 00AAMMGG in BCD notation) centre —> relay S

time (format: 00HHMMSS in BCD notation) centre —> relay Sdate (format: 00AAMMGG in BCD notation) relay —> centre AR

time (format: 00HHMMSS in BCD notation) relay —> centre AR

LEGEND

AR aperiodic message

AV (a.p.) aperiodic variable sent upon high-priority variationAV aperiodic variable sent upon variation

VP variable upon requestT periodic variable with periods that can be programmed from 1 to 5 s

S synchronization

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MDE/A133 2295 001MX3EG1A

Appositely left blank

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Features, dimensions and diagrams, are subject to previous confirmation of ALSTOM T&D Protection & Côntrole

7/16/2019 MX3EG1A


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