2

Carlo Gavazzi Controls S.p.A.

WM20

WM20 DS ENG

04/03/2019

Main functions

Components

Module

Description

WM20

Main unit, measures and displays main electrical variables. With LCD display and

touch keypad, it lets you set measurement parameters, configure accessory mod-

ules and manage up to two alarms.

Digital outputs (optional)

Accessory module with two digital outputs. Expands main unit capacity, specifically

allowing you to:

Transmit pulses proportional to energy consumption

Control digital outputs (static or relay according to the module)

Communication (optional)

Accessory module that lets you transmit data to other systems or configure the

analyzer from remote

Compatible accessory modules

Type

Module description

Code

Digital outputs

Double static output

M O O2

Double relay output

M O R2

Communication

Modbus RTU communication on RS485/RS232

M C 485232

Modbus TCP/IP communication on Ethernet

M C ETH

BACnet IP communication on Ethernet

M C BAC IP

BACnet MS/TP communication on RS485

M C BAC MS

Profibus DP V0 communication on RS485

M C PB

Possible configurations

WM20 only

WM20 + 1 module

WM20 + 2 modules

WARNING: maximum 1 module per type. In the configuration with 2 modules, the communication module is

installed last.