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SATEC PM180 Installation Manual User Manual

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PM180 Substation Automation Unit

10

2.2.7

Relays

8 relays in one Relay Output Module (8RO) are provided for alarms, remote control or energy pulsing, as shown in
Figure 2-12. For ratings, see Appendix: Technical Specifications.

Up to three 8RO modules can be installed in the PM180.

Figure 2-12 Relays Connection

2.2.8

Digital Input/Output (future)

4 optically isolated digital inputs and 2 relay outputs in module (4DI/2DO) are provided for status monitoring and
external synchronization of power demand period and time, and for alarms, remote control or energy pulsing, as
shown in Figures 2-12a. All common terminals are internally connected together.

Up to three 4DI/2DO modules can be installed in the PM180.

Figure 2-12a Digital Inputs and Relays Connection