The MSR42 multi-function safety relay is the control module for the GuardShield Micro 400 safety light curtain, but can also be used with any light curtain. This versatile Category 4 safety device has a pair of PNP solid state, 400 mA OSSDs for direct connection to the final switching device. When safety relay outputs are required, the MSR42 easily accommodates the interconnection of up to three MSR45E safety relay expansion modules, each providing a pair of safety relay outputs. Simply connect ribbon cable connectors from the back of the MSR42 to each of the MSR45E modules for a series of interconnections for two PNP OSSDs, and six N.O. relay outputs.

Manual, monitored or automatic reset
Thirteen diagnostic LEDs
Unique design allows for easy addition of relay expansion modules
Removable terminal blocks
One or two configurable auxiliary, standard outputs
Connection of one or two additional safety devices
RJ45 connections for Micro 400 safety light curtain
Two sensor muting all GuardShield light curtains
Supports up to three MSR45E expander units
Cat. 4 per EN 954-1 (ISO 13849-1), SIL CL3 per EN IEC 61508, PLe per ISO 13849-1

Choose this safety controller from Rockwell Automation's Allen Bradley range to manage and configure safety curtains on your industrial equipment. It has input ports that let you connect devices like safety switches and emergency stop units. Thanks to removable spring terminal connectors, you can easily set up the wiring of this unit and configure it for hard-wire operating mode. It's DIN rail mounted, so you don't need any tools to install it. You'll find this controller useful in material handling equipment in industrial settings.

• 13 LED indicators for easy monitoring and troubleshooting
• Power consumption of 2.4W for energy efficiency
• Thermoplastic housing provides impact and abrasion resistance
• IP20 rating to withstand tools and objects larger than 12mm in size
• Wide operating temperature range of 0°C to +55°C for use in demanding conditions

• EN 954-1
• IEC/EN 60204-1
• IEC 61496-1
• CE
• TÜV

This safety controller has a voltage rating of 24V DC, making it suitable for low-voltage systems.