ABB OMD100 User manual

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INSTALLATION AND OPERATING INSTRUCTION

Automatic control unit

OMD100

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Automatic control unit

34OMD100 rev. C / 1SCC390124M0202

2AUTOMATIC CONTROL UNIT, OMD100

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Table of contents

1. Introduction 4

1.1 Use of symbols 4

1.2 Explanations of abbreviations and terms 4

2. Product overview 5

2.1 Typical applications 6

3. Description 7

3.1 OMD100 switching sequence 7

3.1.1 Line 1 priority 7

3.1.2 No line priority 8

3.1.3 Manual back switching 9

4. Installation 10

4.1 Dimensional drawings 10

4.2 Mounting 11

4.2.1 Automatic control unit OMD100, door mounting 11

4.2.2 Automatic control unit OMD100, DIN-rail mounting 12

5. Connecting 13

5.1 Power circuit 13

5.2 Control circuit 14

5.2.1 Control circuit diagram OMD100 with motorized

OTM40...125_CMA_ 14

5.2.2 Control circuit diagram OMD100 with motorized

OTM160...2500_CM_ 15

5.2.3 Connectors, OMD100 16

5.2.4 OMD100 outputs 17

5.2.5 OMD100 inputs 17

6. Operating 18

6.1 Automatic control unit in Manual Mode 18 – 20

6.2 Automatic control unit in Automatic Mode 20

6.3 Selection of delay time, voltage threshold and

TEST function 21 – 22

6.4 Operating modes 23

6.4.1 Operating modes in OMD100 23

6.4.2 Choice of Operating mode in OMD100 24 – 26

AUTOMATIC CONTROL UNIT, OMD100 AUTOMATIC CONTROL UNIT, OMD100

7. Using automatic control unit OMD100 27

7.1 Interface 27

7.1.1 Keypad 27 – 28

7.1.2 LEDs 28 – 29

7.2 Configuration 30

7.2.1 Rotary switches 30

7.2.2 DIP switches / parameter setting 31 – 32

7.3 TEST sequence 33

8. Technical data of the automatic control unit OMD100 34

9. Troubleshooting 35

9.1 OMD100 35

9.2 Explanations of internal faults, OMD100 36

9.3 Change-over switch does not respond 36 – 37

10. Accessories 38

10.1 Fastener 38

4AUTOMATIC CONTROL UNIT, OMD100

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1. Introduction

This manual describes the installation and the basic operation of the OMD100 automatic control

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

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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

OMD100 The automatic control unit, basic version with simplified functionalities

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

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

detrimental 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

AUTOMATIC CONTROL UNIT, OMD100 AUTOMATIC CONTROL UNIT, OMD100

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2. Product overview

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

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

OMD100 is the basic version of the control unit of automatic switching equipment. It has two

sensors to monitor two three-phase power lines, both able to work with single phase, too. OMD100

can measure voltage, frequency and the phase balance of the primary and secondary power line.

OMD100 is able to command a single motorized change-over switch. The neutral has to be always

connected.

Figure 2.1 Automatic control unit OMD100

1User interface consists of LEDs, keypad and rotary switches

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

switch

3DIP switches for parameter setting

4Places for fasteners, used when OMD100 is mounted on the door

5Place for DIN rail

A07254

II II

OMD

OFF

ON ON

0s 510

Ts Tbs=300s

Tbs=Ts

Lim

SETUP

TEST

LN 1 LN 2

Power Auto Alarm

6AUTOMATIC CONTROL UNIT, OMD100

Figure 2.2 Network line a - Network line b

Automatic control unit type OMD100 is designed for single and three-phase distribution systems in

diverse applications. OMD100 is supplied from Line 1 and Line 2 and can be used without external

power supply.

Figure 2.3 OMD100 has two sensors to monitor two three-phase power lines, both able to work

with single phase, too. Neutral has to be always connected.

A07253

III

LINE 1

L1 L2 NL3

LN1

X11

KA00435

LINE 2

L1 L2 NL3

LN2

X12

LINE 1

NL1

X11

LINE 2

NL1

X12

LN1

LN2

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2.1 Typical applications

Network line a – Network line b

In case of loss of the primary power line, the OMD100 device manages the switching to a secondary

power line used as an emergency source.

AUTOMATIC CONTROL UNIT, OMD100 AUTOMATIC CONTROL UNIT, OMD100

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3. Description

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3.1 OMD100 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

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

Figure 3.1 Automatic Switching Sequence, Line 1 priority

Ts: Switching delay, Tbs:Back switching delay

LINE 1

LINE 2

Switch I status

A07242

Switch II status

Ts Tbs

8AUTOMATIC CONTROL UNIT, OMD100

Figure 3.2 Automatic Switching Sequence, no line priority

Ts: Switching delay, Tbs:Back switching delay

3.1.2 No line priority

The switching sequence can be summarized in following steps:

An anomaly occurs on the Line 1

Switching delay

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

LINE 1

LINE 2

Switch I status

A07251

Switch II status

Ts Tbs

AUTOMATIC CONTROL UNIT, OMD100 AUTOMATIC CONTROL UNIT, OMD100

Figure 3.3 Automatic Switching Sequence, manual back switching

Ts: Switching delay, Tbs:Back switching delay

3.1.3 Manual back switching

The switching sequence can be summarized in following steps:

An anomaly occurs on the Line 1

Switching delay

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

The Line 2 will start the normal functioning

Switching delay

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

LINE 1

LINE 2

Switch I status

A07252

Switch II status

Ts Tbs Ts

10 AUTOMATIC CONTROL UNIT, OMD100

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4. Installation

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4.1 Dimensional drawings

Figure 4.1 OMD100, dimensions of the device

170

OMD

102

A07255

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