Product Description; Product Overview - Bacharach MGS-402 User Manual

MGS-402 User Manual

2. Product Description

2.1 Product Overview

The MGS-402 Gas Detection Controller displays centralized information about the status of connected MGS-
410 gas detectors. The MGS-402 is connected to the MGS-410s via Modbus RTU.
The MGS-402 can be used to provide power to each connected MGS-410 gas detector, negating the need for
separate power supply at the location of the gas detector.
The MGS-402 displays status via a bank of LEDs that represent the channel/sensor connected to it. Each
channel/sensor has a row of dedicated LEDs to indicate the status of the sensor:
Power 

The MGS-402 provides three relays (fault, low and high alarm status) for connection to auxiliary systems,
ventilation or other equipment.
The MGS-402 has an integrated visual alarm of LEDs around the perimeter of the controller that will activate
when a low or high alarm is received from either channel. In addition, the integrated audible alarm will
activate in the same manner.
In addition to being a Modbus master to the MGS-410 gas sensors, the MGS-402 acts as a Modbus slave
for ease of integration into a building automation system (BMS) or programmable logic controller (PLC). The
controller also features two analog outputs which may enable monitoring gas detector levels remotely.
Figure 2-1 -
The MGS-402 Gas Controller System
Fault Low alarm

1100-2570 Rev 1
High alarm

3