Input extension for modular safety system
The modular PSR safety relay system enables easy structuring of different safety control systems with just a few components which do not require programming.
A new and safe input module is also available in addition to the output modules with undelayed and delayed contacts. The input module PSR-SIM4 enables easy connection of up to four safety switches with one N/O contact/N/C contact each to the master safety relay.
Thus, up to four safety doors of a machine can be monitored using a safety relay.
The modular safety relay system PSR from Phoenix Contact
Connection via DIN rail connector
If more than four safety doors are required, several PSR-SIM4 modules can be quickly and easily interconnected via the DIN rail connector PSR-TBUS and evaluated by the master safety relay PSR-SDC4. The switching status of the safety sensors can be evaluated via the signaling outputs in a PLC for convenient diagnostics.