The ABB PSR60-600-70 is a modular, expandable safety relay designed to monitor safety devices and safely interrupt hazardous processes. The “-70” variant is a specific safety function module that is inserted into a PSR base unit (e.g., PSR-TB60). This particular module provides the logic for monitoring two safety channels (e.g., from emergency stops, guard doors, light curtains) with cross-circuit monitoring and manual or monitored start. It ensures that when a safety device is activated (e.g., an E-Stop button is pressed), the connected safety contacts are forcibly opened and the machine is brought to a safe state. It is a core component for building safety circuits compliant with EN/IEC 62061, EN ISO 13849-1 (up to PL e / SIL 3), and other machinery safety standards.
