ABB OMD200 User guide

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INSTALLATION AND OPERATING INSTRUCTION

Automatic control units

OMD200 and 300

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Automatic control units

34OOMS200-300 rev. E/ 1SCC390125M0203

AUTOMATIC CONTROL UNITS, OMD200 AND 300

AUTOMATIC CONTROL UNITS, OMD200 AND 300 AUTOMATIC CONTROL UNITS, OMD 200-300

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Table of contents

1. Introduction 05

1.1 Use of symbols 05

1.2 Explanations of abbreviations and terms 05

2. Product overview 06

2.1 Typical applications 07−08

3. Description 09

3.1 OMD200 and OMD300 switching sequence 09

3.1.1 Line 1 priority 09

3.1.2 No line priority 10

3.1.3 Manual back switching mode 11

4. Installation 12

4.1 Dimensional drawings 12

4.2 Mounting 13

4.2.1 Door mounting 13−14

4.2.2 DIN-rail mounting 15−16

5. Connecting 17

5.1 Power circuit 17

5.2 Control circuit 18

5.2.1 Control circuit diagram OMD200 with

motorized OTM40...125_CMA_ 18

5.2.2 Control circuit diagram OMD200 with

motorized OTM160...2500_CM_

5.2.3 Connectors, OMD200 20

5.2.4 Control circuit diagram OMD300 with

motorized OTM40...125_CMA_ 21

5.2.5 Control circuit diagram OMD300 with

motorized OTM160...2500_CM_

5.2.6 Connectors, OMD300 23

5.2.7 OMD200 and OMD300 outputs 24

5.2.8 OMD200 and OMD300 inputs 24

4AUTOMATIC CONTROL UNITS, OMD200 AND 300

6. Operating 25

6.1 Automatic control unit in Manual Mode 25−26

6.2 Automatic control unit in Automatic Mode 27

6.3 Selection of delay time, voltage threshold and

TEST function 27−29

6.4 Operating modes 30

6.4.1 Operating modes in OMD200 and 300 30

6.4.2 Choice of Operating mode in OMD200 and OMD300 31−33

7. Using automatic control units OMD200 and OMD300 34

7.1 Interface 34

7.1.1 Keypad 34

7.1.2 LEDs 35−36

7.2 Configuration 37

7.2.1 Rotary switches 37

7.2.2 DIP switches / parameter set 38−40

7.3 TEST sequence 41

8. Technical data of the automatic control units

OMD200 / OMD300 42

9. Troubleshooting 43

9.1 OMD200, OMD300 43

9.2 Explanations of internal faults OMD200, OMD300 43

9.3 Change-over switch does not respond 44

9.4 Missing of both lines 44

10. Accessories 45

10.1 Fastener 45

10.2 Cover plate 46−47

AUTOMATIC CONTROL UNITS, OMD200 AND 300 AUTOMATIC CONTROL UNITS, OMD 200-300

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1 Introduction

This manual describes the installation and the basic operation of the OMD200 and OMD300 automatic

control units. The instructive part is followed by a section on available accessories.

Caution: provides important information or warns about a situation that may have a detri-

mental effect on equipment.

General warning: warns about a situation where something other than electrical

equipment may cause physical injury to a person or damage to equipment.

Hazardous voltage: warns about a situation where a hazardous voltage may cause

physical injury to a person or damage to equipment.

Information: provides important information about the equipment.

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1.2 Explanations of abbreviations and terms

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1.1 Use of symbols

OMD: The control unit of automatic transfer switching equipment, common type

name for the automatic control unit

OMD200: The automatic control unit, standard version

OMD300: The automatic control unit, standard version with additional power supply

control

DPS: Dual power source

LN1-Switch I: Power supply line, eg. the primary line

LN2-Switch II: Power supply line, eg. the secondary line used in emergency cases

Test sequence: A sequence to test the functionality of the OMD and the connected change-over

switch

Ts: Switching delay

TBs: Back switching delay

Gs:

Generator stop delay

6AUTOMATIC CONTROL UNITS, OMD200 AND 300

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2 Product overview

The automatic transfer switch concept is applied to any application requiring switching from the pri-

mary power line to secondary power line to ensure the supply of loads.

OMD200:

Analysing the voltage, frequency and the phase balance. Includes the generator START / STOP com-

mand.

OMD200 has two sensors to monitor two three-phase power lines, both able to work with single phase,

too. It has the capability to monitor two power supply lines and to manage a single change-over switch.

With DIP-switches it can be chosen whether or not the neutral line is connected. If OMD200 is used

without the neutral line, the external transformer must be used.

OMD300:

Analysing the voltage, frequency and the phase balance. Includes the generator START / STOP

command and the dual power supply (DPS) to motor operator.

OMD300 has two sensors to monitor two three-phase power lines, both able to work with single phase,

too. It has the capability to monitor two power supply lines and to manage a single change-over switch.

OMD300 has integrated voltage supply for the motor operator (Dual power source, DPS). The neutral

line has to be always connected.

Figure 2.1 Automatic control units, OMD200 and OMD300

OMD

OFF

ON ON

0s 5

Tbs=300s

Tbs=Ts

Lim

SETUP

TEST

Power Auto Alarm

LN1 LN2

AUTO

OMD

OFF

ON ON

0s 5

Tbs=300s

Tbs=Ts

Lim

SETUP

TEST

Power Auto Alarm

LN1 LN2

AUTO

A07266

1 User interface consists of LEDs, keypad and rotary switches

2 Connectors to connect automatic control unit with application and motorized change-over switch

3 DIP switches for parameter setting

4 Places for fasterner, used when OMD200 or OMD300 is mounted on the door

5 Place for DIN rail

AUTOMATIC CONTROL UNITS, OMD200 AND 300 AUTOMATIC CONTROL UNITS, OMD 200-300

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2.1 Typical applications

A. Mains - Generator line

In case of loss of the primary power line, the OMD_ device manages the switching to the emergency

power line equipped with a genset system.

Figure 2.2 Mains - Generator line

B. Mains a – Mains b

In case of loss of the primary power line, the OMD_ device manages the switching to a secondary power

line used as an emergency source.

Figure 2.3 Mains a – Mains b

Automatic control unit type OMD_ is designed for single and three-phase distribution systems in

diverse applications. OMD_ is supplied from Line 1 and Line 2 and can be used without external power

supply.

A07253

III

A07258

III

8AUTOMATIC CONTROL UNITS, OMD200 AND 300

Figure 2.4 Automatic control units OMD_ have the capability to monitor two three-phase power

lines, both able to also work with single phase.

KA00462

2LN1

X11

L1 L2 L3

1X13

LINE 1

2LN2

X12

L1 L2 L3

1X14

LINE 2

LN1

X11

1X13

LN2

X12

1X14

LINE 1

L1 N

LINE 2

L1 N

KA00437

LN1

L1 L2 L3

LINE 1

LN2

L1 L2 L3

LINE 2

2X12

1X14

2X11

1X13

With DIP switches, it can be chosen whether or not the N-line is connected. If OMD_ is used without the

N-line, the external transformer must be used.

Figure 2.5 If OMD_ is used without the N-line, the external transformer must be used.

AUTOMATIC CONTROL UNITS, OMD200 AND 300 AUTOMATIC CONTROL UNITS, OMD 200-300

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3 Description

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3.1 OMD200 and OMD300 switching sequence

3.1.1 Line 1 priority

The switching sequence can be summarized in following steps:

An anomaly occurs on the Line 1

Switching delay

Generator start

Change-over switch (Switch I) to the position O

Change-over switch (Switch II) to the position II

And the back switching sequence can be summarized in the following steps:

The Line 1 will start the normal functioning

Back switching delay

Change-over switch (Switch II) to the position O

Change-over switch (Switch I) to the position I

Generator stop delay

Generator stop

Ts: Switching delay, Tbs: Back switching delay, Gs: Generator stop delay

Figure 3.1 Automatic Switching Sequence, Line 1 priority

LINE 2

LINE 1

Switch I status

Gen. START

A07243

TbsTs Gs

10 AUTOMATIC CONTROL UNITS, OMD200 AND 300

Ts: Switching delay, Tbs: Back switching delay, Gs: Generator stop delay

Figure 3.2 Automatic Switching Sequence, no line priority

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3.1.2 No line priority

The switching sequence can be summarized in following steps:

An anomaly occurs on the Line 1

Switching delay

Generator start

Change-over switch (Switch I) to the position O

Change-over switch (Switch II) to the position II

And the back switching sequence can be summarized in the following steps:

The Line 1 will start the normal functioning

Change-over switch stays in position II

An anomaly occurs on the Line 2

Back switching delay

Change-over switch (Switch II) to the position O

Change-over switch (Switch I) to the position I

Generator stop delay

Generator stop

LINE 1

LINE 2

Switch I status

Switch II status

Gen. start

Ts Tbs Gs

A07261

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