4ao module - analog outputs, Tou module – rtc and 4 digital inputs – SATEC PM135 Manual User Manual

Page 33

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‎Chapter 2 Installation

I/O Connections

PM135 Powermeter Series

33

4AO Module - Analog Outputs

The 4AO module has four optically isolated analog outputs with an internal
power supply and current output options of 0-20 mA and 4-20 mA
(current loop load of up to 500 Ohm), 0-1 mA and ±1 mA (2mA 100%
overload, current loop load of up to 5 kOhm).

Figure ‎2-24: Analog Output Connection

It is recommended to connect unused Analog output
channels to Common terminal.

The 4AO module TERMINAL is for use only with equipment

which has no live parts which are ACCESSIBLE

The RATING of the insulation of the external equipment for

use with the 4AO module, shall comply according to
Installation Category II for insulation to be suitable for
SINGLE FAULT CONDITION

The external equipment TERMINAL connection type is

normally terminal block for wire size 14 AWG (up to 1.5
mm2)

The type of equipment that might be connected to the

TERMINAL is:

Programmable Logic Controller for automation – PLC

Digital or Analog meter

TOU module – RTC and 4 Digital Inputs

The TOU provides a battery-operated real time clock (RTC) with four
optically isolated inputs for status monitoring, time synchronization, pulse
counting, and external power demand period.

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