2 Sed2 Drive Applications

Siemens Building Technologies Building Technologies

SED2 Drive Applications


Simple Applications

INPUTS OUTPUTS

ACTION

0-10 V

On

FaultReset

Relay 1-> Fault

Relay 2-> Run


Standard I/O

0-10 V

2-10 V

0-20 mA

4-20 mA

Programmablefunctions

Form C contacts


30VDC, 5A

240VAC, 2A

2 x analog outputs

2 x digital outputs

RS-485

P1

N2

USS

LonWorks (opt.)

Modbus (opt.)

0-10 V

2-10 V

0-20 mA

4-20 mA

Ni 1000

2 x analog inputs

6 x digital inputs

1 x motor PTC

Insulated


PNP or NPN (sink/source)

SED2


Application - Air Temperature Control, Cooling

TSP=25°C

100 %

0 %SED 2

SPTC

M

p

BI ~3 AI

BI

Digital Input Analog Input

Digital Input

Function Description-Exhaust fan –-Air flow monitoring (External, only alarm)-Room temperature control, cooling-Sensor Ni 1000 -Set point +25°C-Thermostat for switch on/off


Solution: PID Controller Direct Sensor Connection

Ni 1000Sensor

Ni 1000 Temperature Sensor

Drive Based PID w/ Hibernation Mode


Ni 1000 I/O

SED2

Ni 1000 Analog input

Digital input1 Safety Input


Function Description-Constant pressure (P)-Pump Logic Controller (B&G Buster package)-P1, P2 and P3 on-off with motor starters

P3

P1

P2

M

SED 2

SP

M

M

BO BO

P

~3

PC

100 %

P

SP=2.5 bar

0 % P1

P1

P1

P2

P3

Application - Water Pressure Control


Solution: Built-In Pump Cascading

P

This function allows for control of up to two additional, cascaded pumps. With the two relay output contacts, the SED2 performs the cascading logic without additional controllers or I/O cards.

-No separate controller required

-Energy savings with SED2

Pre

ssu

re d

em

an

d

100%

2. 3.1.

Cascade


SED2

Pump Staging I/O

2 x analog input

6 x digital input 2 x digital output

0-10 volt

Pressure

Transmitter

1 On Command

1 safety input

2nd stage pump

3rd stage pump


Application – Temp. Control + Belt Monitoring

Function Description-Exhaust fan –-Air flow monitoring (External, only alarm)-Room temperature control, cooling-Sensor Ni 1000 -Set point +25°C-Thermostat for switch on/off-Belt monitoring

SED 2

SPTC

M

p

BI ~3 AI

BI

TSP=25°C

100 %

0 %


Solution: V-Belt Monitoring

The SED2 ensures reliable V-belt monitoring without the expense of an external sensor. Both speed and torque are compared to a user-defined tolerance band. If the parameters do not match, the drive trips in the event of V-belt failure.

Also, the SED2 is able to monitor a pulse sequence from the sensor detecting rotation of the fan shaft.

Speed

Torque


Application – Temp. Control + Duct Pressure Control

Function Description-Exhaust fan = Like air temperature control example-Air flow monitoring (External, only alarm)-Static pressure control-0-10v, 1-4inch wg-Set point 2.5 inch-Thermostat for switch on/off

IWGSP=2.5

100 %

0 %SED 2

SPTC

M

p

BI ~3 AI

BI


Solution: Duct Pressure Control

• 0 – 10 Volt standard output signal

• 1% Accuracy over full scale

• Available in uni-directional ½”, 1”, 2” and 5” wc

• Available in bi-directional ¼” wc.

Speed Reduction

Pressure


Static Pressure Control I/O

2 x analog input

6 x digital input

SED2

0-10 volt

Pressure

transmitter

1 On Command

1 Safety

Static Pressure Switch


Bundled Package

The SED2 is equipped with TEC application 2722

Which includes 99 subpoints

for monitoring and control

(See Attached Document for TEC Schedule)


Control Board

2 0 2 1 2 2 2 3 2 4 2 5

2 9 3 01 7 2 6 2 7 2 81 2 1 3 1 4 1 5 1 6

1 0 1 16 7 8 91 2 3 4 5

ON

1

RL1NC

RL1NO

RL1COM

RL2NC

RL2NO

RL2COM

AOUT1+

AOUT1-

PTCA

PTCB

DIN5

DIN6

AOUT2+

AOUT2-

ISO0V

P+ N-

RS-485

10V 0V AIN1+

AIN1-

DIN1

DIN2

DIN3

DIN4

ISO24V

AIN2+

AIN2-

AIN1On = [A], 0 - 20 mAOff = [V], 0 - 10 V

AIN2On = [A], 0 - 20 mAOff = [V], 0 - 10 V

V: 0 - 10 V2 - 10 V

I: 0 - 20 mA4 - 20 mA

P1; N2 USS

ErrorRun

Fn

2

519

2Z2

8en

DIN1 - I/ODIN2 - ReverseDIN3 - Fault acknowledge /


Control Terminals

Digital Inputs Terminals Parameter Default

1 5 P0701=1 ON right

2 6 P0702=12 Reverse

3 7 P07a03=9 Fault Acknowledge

4 8 P0704=15 Fixed Frequency



Digital Outputs Terminals Parameter Default Operation

1 18,19,20 P0731 Drive fault

2 23,24,25 P0732 Drive running

Analog Inputs * Terminals Parameter Default Operation

1 3,4 P0756(0) 0-10V dc

2 10,11 P0756(1) 0-10V dc

Analog Outputs Terminals Parameter Default Operation

1 12,13 P0771(0) Frequency

2 26,27 P0771(1) Frequency

* Can also be configured as NI1000 inputs.


Mounting & Installation Considerations

• Type of environment

- What is the location like? Does it fall within the drives operating ranges for altitude & temperature

• Type of power

- Line and load reactors reduce voltage. If voltage is already low, using them could have an effect on performance.

- Does the power system supply at least 1% impedance?• Type of motor

- Is it VFD rated?

- Distance from the drive?

- HP of the motors?

- Age of the motor?


Enclosure Ratings - Drive & Drive W/Bypass

• IP 20– No NEMA equivalent, needs to be mounted in another

enclosure– Generally used in US for OEM applications– Our standard unit as it comes from the factory

• IP 21– NEMA 1, protects operator from electrical hazard and

protects the equipment from falling material– Our standard unit when fitted with gland plate and dust

cover

• IP 54– No direct US equivalent, but exceeds NEMA 12– NEMA 3R– Water tight, limited need in drive applications



Line Reactor Installation• Not recommended to reduce Harmonics• Can be ordered with or without an enclosure• Installed to protect the drive from:

– Power spikes or sags caused from transfer to generator– Poor heavy switch load on the same load center



Load Reactor Installation• Long wire leads from drive to motor

– As wire length from drive to motor increases, the voltage spike increases – Can be ordered with or without an enclosure– Installed to protect the motor from:– Spikes caused from the drive switching frequencies or IGBT



Line and Load Reactor Installation• Always use Siemens Building Technologies specified

reactor• For retro-fit applications

– REMOVE AND REPLACE EXISTING REACTORS WITH SBT SPECIFIED REACTORS


Siemens SED2 VFD Advantages

• Low harmonics design• Small enclosure size• Many standard

features• Reduces operating

cost• Low power losses/high

efficiency• Minimal effect on

customer power• Wide power range –

from ½ to 125 HP

Date post:	23-Jun-2015
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2 Sed2 Drive Applications

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