Chapter 2 Installation I/O Connections
32 PM135 Powermeter Series
8 DI module
Eight optically isolated status inputs are provided for status monitoring,
pulse counting, external power demand period, and time synchronization
Figure 2-21 8 DI - Digital Input Connection
12DI/4RO Module
The 12DI/4RO module can be equipped with optional communication port
COM2 – ETHERNET or RS-422/485.
Figure 2-22 12DI/4RO Module
Before I/O Module installation ensure that all incoming power
sources are shut OFF. Failure to observe this practice can
result in serious or even fatal injury and damage to equipment.
Relay Outputs
There are four electro-mechanic relay outputs provided for energy
pulsing, alarms, or remote control.
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