Pilz PNOZ X2.8P Safety Relay 24V AC/DC 3NO 1NC Positive-Guided Outputs EN ISO 13849-1 PL e

The Pilz PNOZ X2.8P 24VACDC (part number 777301) is a standalone safety relay from the PNOZ X series. Designed to monitor safety devices on industrial machinery—primarily E-STOP pushbuttons, safety gates (interlock switches), and light curtains—to protect personnel from hazardous machinery movements.

When a connected safety device is activated (e.g., an E-STOP button pressed or a safety gate opened), the relay immediately opens its safety-rated output contacts to remove power from the machine's control circuit, stopping dangerous motion.

The PNOZ X series is known for its robust construction, positive-guided relay outputs, and high safety integrity, suitable for applications up to EN ISO 13849-1 PL e (Safety Category 4) and EN/IEC 62061 SIL CL 3.

• Positive-guided Relay Outputs: Features 3 normally open (N/O) safety contacts and 1 normally closed (N/C) auxiliary contact. All safety contacts are positive-guided, a critical requirement for safety circuits as defined by EN 50205.
• Flexible Input Configuration: Supports both 1-channel and 2-channel wiring. The 2-channel configuration can be set with or without cross-short detection between input contacts, enhancing fault diagnostics.
• Dual Start Modes: Configurable for automatic start (relay resets automatically when the safety device is re-engaged) or monitored manual start (requires a separate reset button press, typically required for higher safety categories).
• Wide Power Supply Range: Operates on 24 V AC/DC, making it versatile for both AC and DC control circuits.
• Status Indication: Features integrated LEDs to provide clear visual feedback on power supply (POWER), input channel 1 (IN1), and input channel 2 (IN2) status for easy diagnostics.
• Plug-in Screw Terminals: Comes with removable screw-type terminals, allowing for convenient wiring and replacement without disconnecting all wires.
• Expandable: The auxiliary N/C contact can be used to monitor the status of the safety relay, and the unit can be connected to expansion modules to increase the number of available safety outputs.