ABB OMD100 User manual
—
INSTALLATION AND OPERATING INSTRUCTION
Automatic control unit
OMD100
—
Automatic control unit
34OMD100 rev. C / 1SCC390124M0202
2AUTOMATIC CONTROL UNIT, OMD100
—
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
3
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
—
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.
—
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.
—
1.2 Explanations of abbreviations and terms
5
AUTOMATIC CONTROL UNIT, OMD100 AUTOMATIC CONTROL UNIT, OMD100
—
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 II
OMD
OFF
ON ON
20
5
10
15
+
-%
0s 510
30
0s
5
10
30
Ts Tbs=300s
Tbs=Ts
Lim
SETUP
TEST
LN 1 LN 2
Power Auto Alarm
5
3
2
1
4
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
1
4
3
2
LN1
L1
L2
N
L3
X11
KA00435
LINE 2
L1 L2 NL3
1
4
3
2
LN2
L1
L2
N
L3
X12
LINE 1
NL1
1
4
3
2
L1
N
X11
LINE 2
NL1
1
4
3
2
L1
N
X12
LN1
LN2
—
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.
7
AUTOMATIC CONTROL UNIT, OMD100 AUTOMATIC CONTROL UNIT, OMD100
—
3. Description
—
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
9
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
—
4. Installation
—
4.1 Dimensional drawings
Figure 4.1 OMD100, dimensions of the device
170
OMD
96
102
96
90
90
A07255
Table of contents
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