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A U T O M AT I C C O N T R O L U N I T S , O M D 2 0 0 A N D 3 0 0
—
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.
5
4
3
Figure 2.1
Automatic control units, OMD200 and OMD300
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
2
LN 2
OF F
LN 1
I
II
ON
I
00 s
Tb s=3
Ts
0s 5
A la rm
30
10
10
A u to
30
5
0s
Po w er
Tb s=T
s
O M D
LN 2
LN 1
II
I
A U TO
A la rm
A u to
II
Po w er
ON
1
+
- %
Lim
20
25
15
30
10
P
SE TU
5
TE ST
O M D
A U TO
OF F
II
I
ON
ON
+
- %
Lim
00 s
20
25
Tb s=3
Ts
15
30
0s 5
P
10
SE TU
30
10
5
TE ST
10
30
5
0s
s
Tb s=T
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