LC700 – User’s Guide
3.80
M-120/M-121/M-122/M-124/M-125/M-126 – AC/DC Discrete Output Module
(Supports Hot Swap and Device ID)
Part Number
M-120 (2 groups of 4 NO relay outputs with RC)
M-121 (2 groups of 4 NC relay outputs with RC)
M-122 (1 group of 4 NO and 4 NC relay outputs with RC)
M-124 (2 groups of 4 NO relay outputs)
M-125 (2 groups of 4 NC relay outputs)
M-126 (1 group of 4 NO and 4 NC relay outputs)
Description
This relay output Module is designed to switch pilot lamps, valves, and relay coils up to 5 A per
output. The relays can drive loads ranging from 20 to 110 Vdc or from 20 to 250 Vac. Two screw
terminals are reserved for each relay output. Two groups are separated with individual common
power grounds.
120/25 - 2 Groups 4 NO Relay outputs
PWR-B
PWR-A
GNDB
GNDA
1A
2A
3A
4A
5A
6A
7A
8A
9A
10A
1B
2B
3B
4B
5B
6B
7B
8B
9B
10B
PWR-A
0
1
2
3
PWR-B
1
0
2
3
smar
M-120
ID & Hot-Swap
smar
Figure 3. 53 - Relay Output Module M-120