Parameter Value / Description Explanation Series / Range PSR (Programmable Safety Relay) ABB's comprehensive family of modular safety relays. Product Type Safety Relay Module (Function Module) Provides specific safety logic. Requires a base unit and power supply. Model Number PSR60-600-70 Code Breakdown: - PSR60: Series designation (PSR) and base unit compatibility (60mm wide). - 600: Indicates a dual-channel safety function module with cross-circuit monitoring. - 70: Specific variant, often denotes a 2-channel module with manual start (S33-S34). Safety Function Two-hand control, EMERGENCY STOP, Safety gate monitoring Monitors two independent signal paths. Requires complementary (N/O and N/C) contacts from each safety device for cross-fault detection. Safety Integrity • Safety Category: 4 (EN 954-1) • Performance Level (PL): PL e (EN ISO 13849-1) • Safety Integrity Level (SIL): SIL 3 (EN/IEC 62061) Meets the highest levels of safety for machinery control systems. Supply Voltage 24V DC (via the base unit) Standard voltage for industrial control circuits. Number of Channels 2 (Dual Channel) Can monitor two independent safety inputs (e.g., two contacts from a safety gate). Input Type Cross-circuit monitoring Requires both a Normally Open (NO) and a Normally Closed (NC) contact from each safety device to detect contact welding or faults. Outputs • Safety Outputs: 2 or 3 semiconductor safety outputs (OSSDs - Output Signal Switching Devices), typically via the base unit. • Auxiliary Outputs: At least one signaling contact for fault or status indication. Safety outputs are force-guided (mechanically linked) relays to ensure safe switching. Start Function Manual Start (with monitored start option) After a safety trip, the circuit requires a deliberate manual reset (via a separate reset button) to restart. The start circuit itself can be monitored. Time Delay Typically not applicable for this basic function module. Other PSR modules offer timed functions. Dimensions (Module) Approx. 22.5mm wide (single module) Designed to be snapped onto a DIN rail-mounted base unit (e.g., PSR-TB60). Connection Spring-cage or screw terminal (via base unit) Standards Compliance EN 60204-1, EN 954-1, EN ISO 13849-1, EN/IEC 62061, UL 508, CSA C22.2 Complies with international machinery safety and control standards. Ambient Temperature -25°C to +55°C (operation) Standard industrial operating range.