User guide
Chapter 2 Installation I/O Connections
32 PM135 Powermeter Series
Relay Outputs
There are four electro-mechanic relay outputs provided for energy
pulsing, alarms, or remote control.
Figure 2-22 Relay Output Connection
Digital Inputs
12 optically isolated status inputs are provided for status monitoring,
pulse counting, external power demand period, and time synchronization.
Figure 2-23 12 Digital Input Connection