Safety
Logic
Safety Relays
Minotaur MSR144RTP
The Allen-Bradley Guardmaster MSR144RTP monitoring safety relay from Rockwell Automation is a Category 4 device (per EN954-1) that provides an easily expandable solution where the requirement is to switch several safety circuits or different voltages from one E-stop. Complemented by two types of plug-in expansion modules, the MSR144RTP eliminates time-consuming wiring and loss of safety contacts, while offering flexible and easy customization to suit application-specific requirements.
The modular MSR144RTP can be connected in four different input wiring configurations (1 NC, 2NC, 2 PNP connections from a light curtain, or a four wire safety mat) and is easily expanded--without additional wiring and without loss of safety contacts--simply by plugging in the connectorized ribbon cable from the dedicated expansion modules. The modules themselves are available in two types: the MSR230P module offers four additional (NO) safety contacts, while the MSR238DP time-delayed output expansion module features 2 NC safety and one NC auxiliary off-delayed contacts for time delays up to 5 minutes. Both can be used with the MSR144RTP in any combination up to a maximum of five expansion modules.
In addition to reducing installation costs and wiring complexity, the simplified expansion provided by the modular MSR144RTP allows for quick and easy configuration to meet specific user requirements. Furthermore, the modular design helps to reduce the number of different inventory components that would normally be required. Add to this the advantages of removable coded terminals and extended LED diagnostics, and the user is presented with a package that not only provides the highest levels of safety provision, but also the benefits of reduced service and maintenance costs.