Specifications

Theory of Operation
32
31007715 6/2008
If the segment contains a mixture of both 115 VAC and 230 VAC I/O modules, you
must take care to install them in separate voltage groups and support the different
voltages with separate STB PDT 2100 PDMs:
1 24 VDC signal to the NIM’s logic power supply
2 115 VAC signal to the segment’s sensor bus
3 115 VAC signal to the segment’s actuator bus
4 optional relay on the actuator bus
5 230 VAC signal to the segment’s sensor bus
6 230 VAC signal to the segment’s actuator bus
NIM
PDM
IN
IN
IN
OUT
IN
P/S
24 VDC
Source
External
24 V
5.0 V
OUT
Logic Power
P/S
VAC
VAC
VAC
VAC
VAC
VAC
115 VAC
115 VAC
115 115 115
VAC
230
230 230
PDM
VAC
230 VAC
115 VAC
230 VAC
230 VAC
1
2
3
6
5
4
4
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