© 2003 TELEDYNE RELAYS (800) 284-7007 • www.teledynerelays.com EMC48S50-04 1
EMC48S50-04\032003\Q1
Three-Phase Induction Motor Softstarter200–480 Vac, 15kW (Y), 26kW (D)
NEW Series EMC48S50-04
INDUCTION MOTOR SOLID-STATE REDUCED VOLTAGE STARTER(SOFTSTARTER) WITH SOFTSTOP FEATURE
The Series EMC can be used as an alternative to costly and relatively big variablespeed controllers in applications such as pumps, fans, compressors andconveyors.
Its six-thyristor structure, working like a full-wave phase angle controller (bothpositive and negative cycles are controlled), reduces the induction motor startingcurrent as well as the motor starting torque. The reduction in motor startingcurrent improves the efficiency of the power used. It also avoids voltagefluctuations that lead to ambient light variations or “flicker.”
The Series EMC fits existing applications without any modification of the wiringfield configuration. Thus it can replace an electromechanical star-delta starterwithout changing the motor coupling. The EMC may be implemented like astandard three-phase electromechanical contactor for induction motors.Furthermore, its ability to be installed inside the delta wiring allows the SeriesEMC to drive 1.73 times more current than a standard online softstarter.
The Series EMC features diagnostic and self-test functions to assist with machinemaintenance, reduce costs, and delays of restarting equipment.
SOFTSTARTING WITH EMC
Speed
On LineCurrent
In
t
• Mechanical part stress- Noise- Maintenance costs
• High inrush current- Motor and mains protection oversized- Risk of flicker
Speed
On LineCurrent
In
t
• Softstarting- Noise reduction- Maintenance cost reduction
• No more high inrushcurrent- Motor and mains protection oversized- No more harmonic or flicker problems
STAR (Y) DELTA (D)
TYPICAL WIRINGS
DIRECT ON LINE (DOL) STARTING
BENEFIT FOR MOTOR STARTING
SCITSIRETCARAHCNIAM
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zH56ot04ot01cdV42
A1/V42CD/CA
Vk4otC°04–
C°001+
EMC48S50-04 2 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2003 TELEDYNE RELAYS
EMC48S50-04\032003\Q1
SNOITPODNASGNITTESEHTFONOITPIRCSEDnoitpO/gnitteS emiT euqroTlaitinI potStfoS ssapyB tratS/NPN kciK
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Fig. 1 INTERNAL DIAGRAM
1L1 3L2 5L3
6T34T22T1
6
Supply
InternalSupply
VoltageSynchr.
SwitchStatus
PowerElementControl
PowerElements
OptionsTorqueTime
Switches
Bypass
Diag.
µController
Control Input
Urg. Stop
LEDs
0V
Phases
5
4
3
2
1
Fig. 2 DESCRIPTION
0 40.25
6432 16
0.5 12
80.6
0.2
10.9 0.8
0.3 0.40.5
0.70
Sof
t-
Sto
p B
yp.
NP
N
Sta
rt
Kic
k
2T1 4T2 6T3
1L1 3L2 5L3
1L1 3L2 5L3
2T1 4T2 6T3
Motor Softstarter
Made in France
Stop / Load
Supply
Start / Line
Urg.Stop
Ctrl
Byp.
0V
+
1
2
3
4
5
6
Time(s) TorqueInitial
Diag.
LEDs
Controls
Status outputs
Settings Motor connections
Three-phase mains connections
Sof
t-
Sto
p B
yp.
NP
N
Sta
rt
Kic
k
Option switches
(Behind the label)
Fig. 3 DESCRIPTION OF THE DIFFERENT SETTING PARAMETERS
Control
Voltage Applied tothe Motor
(“Initial Torque”)Motor Speed
Motor Speed
Voltageon Motor
Kic
k
Nn
t
ts
0
StartingCurrent
800% In
In
Motor ShaftTurning
Detection
Nominal Speed:End of the
Softstarting andBypass Closing
Theoretical Endof the VoltageRamp Set bythe User (ts)
Stop End of theFast Deceleration
Back to theInitial State
andDiagnostic
Vn
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
(DOL)
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Series EMC48S50-04
SETTINGS AND DIAGNOSTIC
© 2003 TELEDYNE RELAYS (800) 284-7007 • www.teledynerelays.com EMC48S50-04 3
EMC48S50-04\032003\Q1
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Series EMC48S50-04
SETTINGS AND DIAGNOSTIC
IMPORTANT INFORMATION ABOUT THE DIAGNOSTIC
1. The device makes a complete diagnostic (mains, load and itself) since it has enough supply voltage (On the mains or on the control side).2. The device only checks the presence of the phases and the closing of the solid-state switches during the voltage ramps (softstart and softstop)
and during the full on-state period.3. The control overrides the diagnostic.
• If a problem occurs during the control period, the device will close all the solid-state switches. If the problem goes on during the full on-state period, the corresponding information will be given to the user according to the table above.• Likewise, if a problem occurs during the softstopping period, the device will stop immediately in order to reach the off-state diagnostic period.
4. On a hard stop (no softstop) and in the case of driving a large motor, the device may temporarily display a problem concerning the mains. Thisis due to an important residual voltage across the motor windings (back EMF generated by the motor rotation and the remaining magnetic field).This security allows the user to avoid connecting the motor to the mains in bad conditions. This phenomenon can be cancelled by using thesoftstop feature that slowly reduces the remaining magnetic field inside the motor. This also avoids overvoltage across the solid-state switches(increasing the lifetime expectancy of the integrated varistors). Therefore, softstop is recommended even with high inertia motor loads.
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EMC48S50-04 4 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2003 TELEDYNE RELAYS
EMC48S50-04\032003\Q1
CONTROL
Fig. 4 HIGH SIDE CONTROL (PNP)
CONTROL INPUTS AND STATUS OUTPUTS
Fig. 5 LOW SIDE CONTROL (NPN) Fig. 6 STATUS OUTPUT UTILIZATION
Control
or
or
+
Vc
0V ImmediatelyStop
Ic
Ict
Vt
Urg.Stop
Ctrl
Byp.
0V
+
1
2
3
4
5
6
Initial
Diag.
Urg.Stop
Ctrl
Byp.
0V
+
1
2
3
4
5
6
Initial
Diag.
Ict
Ict
0V ImmediatelyStop
Control
Vt Vtor or
Urg.Stop
Ctrl
Byp.
0V
+
1
2
3
4
5
6
Initial
Diag.
Bypass ContactorLine Contactor
IndicatorsPLC Inputs
...
Iby
Ipb
Vsa
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Series EMC48S50-04
© 2003 TELEDYNE RELAYS (800) 284-7007 • www.teledynerelays.com EMC48S50-04 5
EMC48S50-04\032003\Q1
CONTROL
CHARACTERISTIC CURVES OF THE CONTROLLING INPUTS AND STATUS OUTPUTS
Fig. 7 CONTROL INPUT CURRENT/VOLTAGECHARACTERISTIC IN PNP MODE (HIGH SIDE CONTROL)
Fig. 8 MAX. OUTPUT STATUS CURRENTVERSUS AMBIENT TEMPERATURE
2 4 6 8 10 12 14 16 18 20 22 24 26
24
22
20
18
16
14
12
10
8
6
4
2
Control CurrentIc in mA
Control VoltageRange
According toEN60947-4-2
ControlVoltage
Vc in Volts
Vc max
Vc min
VcReleasing
LoadCurrentIby / Ipb
(A)
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
AmbientTemperature (°C)10 20 30 40 50 60 70 80 90 100 110 120 130
Fig. 9 OFF-STATE STATUS OUTPUT PARASITICCAPACITANCE VERSUS OUTPUT VOLTAGE
Fig. 10 ON-STATE STATUS OUTPUT RESISTANCEVERSUS AMBIENT TEMPERATURE
OutputCapacitance
Coff(pF)
500
400
300
200
100 AuxiliaryVoltage
Vsa(V)
10 20 30 40 50
1000
875
750
625
500
375
250
125
AmbientTemperature (°C)
OutputResistance
Roff(mΩ)
–50 –25 0 25 50 75 100 125
Fig. 11 STATUS OUTPUT OVERVOLTAGEPROTECTION CHARACTERISTIC
Fig. 12 MAX. OVERLOAD PULSES REGARDING DURATIONFOR OVERVOLTAGE PROTECTION OF STATUS OUTPUTS
200v
i10–5 10–4 10–3 10–2 10–1 100 101 102 A 103
100
80
60
40
20
10
25
25
103
101
100
10–1
10–2
102
10 100 1000 10000555
5
5
5
5
A
1x
imax
tr
tr
2x10
102
104
103
105
106∞
imax
Series EMC48S50-04
EMC48S50-04 6 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2003 TELEDYNE RELAYS
EMC48S50-04\032003\Q1
POWER
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Series EMC48S50-04
© 2003 TELEDYNE RELAYS (800) 284-7007 • www.teledynerelays.com EMC48S50-04 7
EMC48S50-04\032003\Q1
POWER
Fig. 13 ELECTRICAL LABEL DESCRIPTIONFig. 14 OVERLOAD CURRENT CHARACTERISTIC
REGARDING OVERLOAD DURATION
CHARACTERISTIC CURVES OF THE POWER ELEMENTS
0 40.25
6432 16
0.5 12
80.6
0.2
10.9 0.8
0.3 0.40.5
0.70
Sof
t-
Sto
p B
yp.
NP
N
Sta
rt
Kic
k
2T1 4T2 6T3
1L1 3L2 5L3
1L1 3L2 5L3
2T1 4T2 6T3
Motor Softstarter
Made in France
Stop / Load
Supply
Start / Line
Urg.Stop
Ctrl
Byp.
0V
+
1
2
3
4
5
6
Time(s) TorqueInitial
Diag.
Three Phase Mains
IeVe
Vd
Load
Is
Ie
Is
Ie
0
200
400
600
800
1000
1200
1400
1600
1800
2000
0.01 0.10 1.00 10.00
Time(s)
ITSM(A)
(PeakValues)
Non-repetitive
Repetitive
Fig. 15 NOMINAL CURRENTS VERSUS AMBIENT TEMPERATURE
Resistive loadcontrol (AC51)
Motor control (AC53a)
Limit for heat sink temperature below 100°C(Resistive loads; AC51 current)Limit for heat sink temperature below 80°C accordingto EN60947 (Resistive loads; AC51 current)Limit for motor control in normal use(AC53a current)Limit for motor control with hard conditionsaccording to EN60947-4-2 (AC53a current)
Dissipated Power(W)
Permanent CurrentIe
(ARMS)
ATTENTION:The maximum wire cross-section
is 10mm2 without furrule.When current exceeds 50A, it
may be necessary to double thewire number per terminal.
120
100
80
60
40
20
0
378
303
233
167
107
51
00 10 20 30 40 50 60 70 80 90 100 110
Fig. 16 OVERVOLTAGE PROTECTIONCHARACTERISTIC (VARISTORS)
Fig. 17 MAX. OVERLOAD PULSES REGARDING DURATIONFOR OVERVOLTAGE PROTECTION OF POWER ELEMENTS
4000v
i
10–5 10–4 10–3 10–2 10–1 100 101 102 A103 104
2000
800
600
400
1000
104
102
101
100
10–1
103
10 100 1000 10000555
5
5
5
5
A
tr
tr
imax 1x
2x
10
102
104
103
105
106
∞
imax
Series EMC48S50-04
EMC48S50-04 8 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2003 TELEDYNE RELAYS
EMC48S50-04\032003\Q1
GENERAL
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Series EMC48S50-04
© 2003 TELEDYNE RELAYS (800) 284-7007 • www.teledynerelays.com EMC48S50-04 9
EMC48S50-04\032003\Q1
GENERAL
Fig. 18 DIMENSIONS
IEC
947-4-2E
N 60947-4-2
Ve 200-480 V
40/65HZ
FO
R R
AT
ING
SS
EE
INS
TR
UC
.S
HE
ET
V im
p 4000V
Ie 30 AA
C-53a
2.99
2 (7
6)
3.268 (83)
Sof
t-
Sto
p B
yp.
NP
N
Sta
rt
Kic
k
2T1 4T2 6T3
1L1 3L2 5L3
1L1 3L2 5L3
2T1 4T2 6T3
Motor Softstarter
Made in France
Æ
Stop / Load
Supply
Start / Line
Urg.Stop
Ctrl
Byp.
0V
+
1
2
3
4
5
6
Time(s) Torque
0 40.25
6432 16
0.5 12
80.6
0.2
10.9 0.8
0.3 0.40.5
0.70
Initial
Diag.
6.10
2 (1
55)
3.54
3 (9
0)
5.55
1 (1
41)
4.331 (110)
230VAC
NOITCETORPLAMREHTEHTFOSCITSIRETCARAHC
scitsiretcarahC slebaLseulaV
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egatloV.moN cd/caV052tnerruC.moN A6
ecnatsiseRtcatnoC m01 Ω
stcatnoCdenepOneewteBnoitalosI G01 Ω
dnastcatnoCneewteBnoitalosIgnisuoH
Vk4
ecnatsiseRnoitalosI G01 Ω
snoitcennoC seriwdedlewrosbattalfmm8.2
NAFEHTFOSCITSIRETCARAHC
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)deificepsesiwrehtosselnutneibmaC°02taneviG(skrameR
rotoM rotomnoitcudnielopdedahSegatloVylppuS caV032
noitpmusnoC Am86W9ycneuqerFylppuS zH06-05
deepS MPR0062leveLesioN Abd53snoitcennoC sbattalfmm8.2
Series EMC48S50-04
EMC48S50-04 10 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2003 TELEDYNE RELAYS
EMC48S50-04\032003\Q1
STANDARDS
).C.M.E(YTILIBITAPMOCCITENGAMORTCELENIHTIWLEVELYTINUMMI
scitsiretcarahC slebaLseulaV
)deificepsesiwrehtosselnutneibmaC°02taneviG(skrameR
segrahcsidcitatsortcelENE
2-4-00016riaehtniVk8tcatnocVk4
etatsoNrognignahc
noitcurtsed
sdleiFcitengamortcelEdetaidaRNE
3-4-00016m/V01
etatsoNrognignahc
noitcurtsed
stsruBtneisnarTtsaFNE
4-4-00016edisrewopehtnognilpuoctceridVk2edistupniehtnognilpuocdepmalcVk2
etatsoNrognignahc
noitcurtsed
skcohScirtcelENE
5-4-00016)sedistuptuodnatupnI(edomlaitnereffidgnilpuoctceridVk1
)sedistuptuodnatupnI(edomnommocgnilpuoctceridVk2
etatsoNrognignahc
noitcurtsed
porDegatloVNE
11-4-00016
).C.M.E(YTILIBITAPMOCCITENGAMORTCELENIHTIWLEVELNOISSIME
scitsiretcarahC slebaLseulaV
)deificepsesiwrehtosselnutneibmaC°02taneviG(skrameR
secnabrutsiDdetcudnoC 11055NEdleiflairtsudnirofsdradnatsehthtiwecnailpmocnI
sdradnatsehthtiwecnailpmocnIrotcatnocssapyblanretxenahtiwdleifcitsemodrof
secnabrutsiDdetaidaR 11055NEbd03< µ zHM032–03egnarycneuqerfehtrofV
bd73< µ zHM0001–032egnarycneuqerfehtrofV
gniretliFgninrecnoCskrameR
-dilosybdetarenegsecnabrutsiddetaidarrodetcudnocehT.noitarugifnocdaoldnagniriwehtnodnepedsyaleretats
sdradnatsnaeporuEehtybdednemmocerdohtemtsetehT.ytilaermorfrafstluserotsdaelytilibitapmoccitengamortcelegninrecnoc
.noitacilpparuoynodesabsretliffoesudnemmocereWehtseriuqer2-4-74906NEdradnatsnaeporuEehT
.)doirepgnitratstfosehtfodne(etatsnolluftaenodebottnemerusaemnoslevelderiuqerdleiflairtsudniehtwoleberastcudorpruo,eroferehT
.dedeensiretliflanoitiddaondnarotomnoitcudniehtekildaolevitcudnihguonesetarenegsetunimlarevestsalyamtahtdoirepgnitratsehT.retratstfosehtraendetacolsecivedevitisnesbrutsidotecnerefretni
EVITCERIDEGATLOV-WOL
scitsiretcarahC slebaLseulaV
)deificepsesiwrehtosselnutneibmaC°02taneviG(skrameR
dradnatS 2-4-74906NE
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SLAVORPPA
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gnikraMECNE
2-4-74906seY
SULUc 805LU gnidneP
5080EDV 05906NE gnidneP tnemnorivneeciffO
Series EMC48S50-04
© 2003 TELEDYNE RELAYS (800) 284-7007 • www.teledynerelays.com EMC48S50-04 11
EMC48S50-04\032003\Q1
DANGER!
STANDARDS
1. The EMC does not correctly operate on three-phase mains with the motor neutral connected to the neutral of the mains. If you havesuch a requirement, please contact us.
2. The overload relay must be adapted to the motor.3. Please take care not to make short circuits while installing the bypass contactor or the backward wires for delta wiring.4. In case of devices planned to be used connected to a bypass contactor, the control voltage will have to be held sufficiently to allow the bypass
to close. Verify the bypass checking option “byp.”5. In case of fast softstarting and softstopping controls without waiting for the end of the ramps, the motor may heat up. Please contact your motor
supplier to choose an adapted model.
ATTENTION
IMPORTANT
The installation of this product must be done by qualifiedpeople , informed about electric hazards (electrocution risks linked tothe voltage levels in the circuit).
Any intervention on the installation must be operated with thecircuit disconnected from the electric grid by an electromechanicalmean insuring a sufficient galvanic isolation.
The EMC is composed of silicon-based solid-state switches.They never ensure a safe function when they are not controlled(important leakage current and untimely closing). Therefore, weadvise you to use an electromechanical device in series with thesoftstarter, which can ensure a safe operation in the disconnectedcircuit.
The emergency stop must not be done by the softstarter. It mustbe done by an electromechanical mean with sufficient current break-ing possibility.
In order to operate the circuit safely, the control part of thesoftstarter will have to be disconnected from the control or auxiliarysupplies as well.
RETRATSTFOSEHTFOTNEMNORIVNE
seciveD slebaL noitpircseD skrameRsesuFeniLnO
otgnidroccasnoitidnocdraH()2-4-74906NE
V005/05ma15x41ZARREF
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)2-4-74906NEA01ssalc42-00ZrelleoM
yaleRdaolrevO)snoitidnoclamroN(
resuehtybdenimretedeboT
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1MK 1CAA03
lioCrotcatnoCssapyB 2A/1A .xamW51/.xamAV51
noitcetorPlamrehT C°T elbaliavatoN
sgnitteS/gniriW noitamrofnilarenegninevigscitsiretcarahcehthtiwylpmoC
Series EMC48S50-04
EMC48S50-04 12 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2003 TELEDYNE RELAYS
EMC48S50-04\032003\Q1
Fig. 19 HIGH SIDE CONTROL (PNP)
INSTALLATION
WIRING POSSIBILITIES
0 40.25
6432 16
0.5 12
80.6
0.2
10.9 0.8
0.3 0.40.5
0.70
Sof
t-
Sto
p B
yp.
NP
N
Sta
rt
Kic
k
2T1 4T2 6T3
1L1 3L2 5L3
1L1 3L2 5L3
2T1 4T2 6T3
Motor Softstarter
Made in France
Stop / Load
Supply
Start / Line
Urg.Stop
Ctrl
Byp.
0V
+
1
2
3
4
5
6
Time(s) TorqueInitial
Diag.
AuxiliarySupplyAC/DC
Supply10–>24Vdc
+
Control/Stop
ImmediatelyStop
A1 A2KM1
UserInformation
V1
W2
M3~
U1
T°C
W1
U2 V2
3L2
2T1
1L1
L<19.69 in. (50cm) max.
5L3A1
A2
KM1
4T2 6T3
3L2
2T1
1L1 5L3L2L1 L3
4T2 6T3
Delta Coupling
0V
Fig. 20 LOW SIDE CONTROL (NPN)
0 40.25
6432 16
0.5 12
80.6
0.2
10.9 0.8
0.3 0.40.5
0.70
Sof
t-
Sto
p B
yp.
NP
N
Sta
rt
Kic
k
2T1 4T2 6T3
1L1 3L2 5L3
1L1 3L2 5L3
2T1 4T2 6T3
Motor Softstarter
Made in France
Stop / Load
Supply
Start / Line
Urg.Stop
Ctrl
Byp.
0V
+
1
2
3
4
5
6
Time(s) TorqueInitial
Diag.
AuxiliarySupplyAC/DC
ImmediatelyStop
A1 A2KM1
UserInformation
V1
W2
M3~
U1
T°C
W1
U2 V2
3L2
2T1
1L1
L<19.69 in. (50cm) max.
5L3A1
A2
KM1
4T2 6T3
3L2
2T1
1L1 5L3L2L1 L3
4T2 6T3
Delta Coupling
Series EMC48S50-04
© 2003 TELEDYNE RELAYS (800) 284-7007 • www.teledynerelays.com EMC48S50-04 13
EMC48S50-04\032003\Q1
INSTALLATION
Fig. 21 UPON THE MAINS CONTROL
WIRING POSSIBILITIES
AuxiliarySupplyAC/DC
ImmediatelyStop
A1 A2KM1
UserInformation
V1
W2
M3~
U1
T°C
W1
U2 V2
3L2
2T1
1L1
L<19.69 in. (50cm)
5L3A1
A2
KM1
4T2 6T3
3L2
2T1
1L1 5L3L2L1 L3
4T2 6T3
Delta Coupling
Control/Stop
0 40.25
6432 16
0.5 12
80.6
0.2
10.9 0.8
0.3 0.40.5
0.70
Sof
t-
Sto
p B
yp.
NP
N
Sta
rt
Kic
k
2T1 4T2 6T3
1L1 3L2 5L3
1L1 3L2 5L3
2T1 4T2 6T3
Motor Softstarter
Made in France
Stop / Load
Supply
Start / Line
Urg.Stop
Ctrl
Byp.
0V
+
1
2
3
4
5
6
Time(s) TorqueInitial
Diag.
SOFTSTARTING INCANDESCENT OR INFRARED LAMPS(AC1 CURRENT)
SOFTSTARTING THREE-PHASE LOADED TRANSFORMERS(PLEASE CONTACT US)
OTHER LOAD POSSIBILITIES
0 40.25
6432 16
0.5 12
80.6
0.2
10.9 0.8
0.3 0.40.5
0.70
Sof
t-
Sto
p B
yp.
NP
N
Sta
rt
Kic
k
2T1 4T2 6T3
1L1 3L2 5L3
1L1 3L2 5L3
2T1 4T2 6T3
Motor Softstarter
Made in France
Stop / Load
Supply
Start / Line
Urg.Stop
Ctrl
Byp.
0V
+
1
2
3
4
5
6
Time(s) TorqueInitial
Diag.
3L2
2T1
1L1
L<19.69 in. (50cm)
5L3A1
A2
KM1
4T2 6T3
L2L1 L3
Delta Coupling
3L2
2T1
1L1
L<19.69 in. (50cm)
5L3A1
A2
KM1
4T2 6T3
L2L1 L3
Delta Coupling
Load
0 40.25
6432 16
0.5 12
80.6
0.2
10.9 0.8
0.3 0.40.5
0.70
Sof
t-
Sto
p B
yp.
NP
N
Sta
rt
Kic
k
2T1 4T2 6T3
1L1 3L2 5L3
1L1 3L2 5L3
2T1 4T2 6T3
Motor Softstarter
Made in France
Stop / Load
Supply
Start / Line
Urg.Stop
Ctrl
Byp.
0V
+
1
2
3
4
5
6
Time(s) TorqueInitial
Diag.
Series EMC48S50-04
EMC48S50-04 14 SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE © 2003 TELEDYNE RELAYS
EMC48S50-04\032003\Q1
INSTALLATION
Fig. 22 MOUNTING PRECAUTIONS
MOUNTING
The heat sink fins must bemounted vertically toensure a good thermalconvection. A minimumspace must be left freearound the assembly.
MOUNTING WITH SCREWS
0.9843 (25)
Ø 0.2165 (5.5)
Ø 0.2165 (5.5)
3.93
7 (1
00)
OMEGA DIN RAIL MOUNTING (EN50022)
FIXING REMOVINGMOUNTING
Series EMC48S50-04
© 2003 TELEDYNE RELAYS (800) 284-7007 • www.teledynerelays.com EMC48S50-04 15
EMC48S50-04\032003\Q1
selpmaxEdaoL gnitteSemiTdesivdA
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INSTALLATION
ADVICE FOR THE SETTINGS
ATTENTION
Obtaining a particular starting time value is only a consequence of the motor torque reduction and cannot be guaranteed or easily repeatable.The rotary switch < Time (s) > setting values only give the duration of the voltage ramp applied to the motor but not necessarily its starting time.The main EMC function is to obtain a motor torque reduction to take care of the motor load and the electric grid. The motor starting time is only aconsequence and completely depends on the motor itself, its load and the settings done by the user.
The EMC cannot break a motor driving a load that has much inertia. The user can only obtain a stop time equal or longer than a simpledisconnection from the electric grid. Using the softstop feature can only be justified when the motor load tends to break the motor (pumps, ...) orwhen the products treated by the machine need to be stopped slowly (conveyors, ...). In the case of a load with high inertia, the softstop featurecan help to reduce slowly the magnetic field inside the motor to avoid long time overvoltage in the circuit.
SETTING EXAMPLES
Direct On Line Starting (DOL)Long Starting Time for Lamps,
Transformers...(On a motor, it may hum)
Advised Settingsfor Testing the Motor Starting
Loads with Increasing Torque Like N 2
and Increasing Power Like NLoads with Decreasing Torque Like 1/N
and Constant Power
Loads with Constant Torqueand Increasing Power Like N
Loads Increasing Like Nand Constant Power
C
N
C
N
C
N
C
N
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Series EMC48S50-04