GM-Series Expandable OSSD Safety Controller


CE Approved

   Expandable OSSD Safety Relay Approved to CAT 4 SIL 3 PL-e
•   Monitor up to 20 Dual Channel Safety Devices (Requires GSM Module/s)
•   Input Status Indication for Each Connected Device
•   Reset Circuit Indication – Automatic or Manual
•   Eliminate Fault Masking – No Series Connection (Based on user installation)
•   No Programming Required – Ready to use out of the box
•   Enhance Production, Reduce Downtime

The GM-Series is an expandable safety control unit designed to monitor multiple Mechan Controls Lightcurtains (MLG-Series) or O-Type safety switches.

The master control unit (GM1) can monitor one pair of MLG-Series Lightcurtain (transmitter & receiver) and each additional Light curtain set can be monitored by adding an additional GSM extender module.

This system can also be used to safely monitor other Mechan Controls products such as O-Type safety switches.

This system does not require programming!


The GM-Series has been designed and approved to conform with CAT4, SIL PLe safety requirements. Based on the popular EM-SERIES range, the GM-Series modular design makes it easy to install and expand a safety system that exactly meets your needs.

The GM-Series control module is made up from an GM1 safety control unit and the required number of extender modules.

The GM1 is the main module containing the power supply unit, re-set circuit, OSSD channels, control relays with dual channel output/input and indication for reset fault and input status.

The GSM module clips onto the same DIN rail as the GM1 and connects to the adjacent unit via the attached strap.

The flexible DIN rail mounting safety control unit can monitor up to 20 MLG light curtains or OSSD switches in one system. This will provide dual safety output and volt free contact with LED indication for each module.

This system is best used when trying to eliminate fault masking. Its high safety category rating and easy to use design makes it ideal for any industrial application.

File Title File Name Download File
330 402 Iss0 GM1 and GSM Installation Guide 330-402-Iss0-GM1-and-GSM-Installation-Guide.pdf PDF (0)
Product Type Product Code Description Part No.  Quote options Added to basket
GM1 2 GM-Series GM1 Safety Controller

GM1-24VDC Expandable OSSD/Light Curtain Safety Controller

Qty: - +
GSM v2 GM-Series GSM

GSM OSSD/Light Curtain Extender Module

Qty: - +