Pilz PNOZ Configurable Safety Relay – Yellow 751135 C 48-240VACDC 2 n/o 2 n/o t

The Pilz PNOZ X2.8P is a versatile, compact safety relay designed to safeguard machinery and personnel. Recognizable by its distinctive yellow casing, it is a key component in creating safety circuits for applications like emergency stops, safety gates, and two-hand controls.

Key Features:

• Universal Power Supply: Operates on a wide range of 48-240V AC/DC, making it suitable for various industrial environments without needing a specific voltage power supply.

• Configurable Functionality: Unlike standard safety relays with a fixed function, this unit is configurable. Using a plug-in coding module (sold separately), you can select from multiple safety functions to suit your specific application.

• Robust Safety Outputs: Features 2 Normally Open (n/o) safety semiconductor outputs and 2 Normally Open (n/o) safety relay contacts. This combination provides both instant electronic switching and robust, physically-isolated relay contacts for controlling contactors or the main power circuit.

• Flexible Contact Structure: The relay contacts are freely configurable (t = tamper-proof), meaning they can be wired as normally open or normally closed based on your circuit design needs. This offers significant wiring flexibility.

• Compact Design: Its slim housing saves valuable space in the control cabinet.

• High Safety Rating: Typically complies with standards like EN 60947-5-1, EN 60204-1, and is certified for use in safety circuits up to Category 4 of EN ISO 13849-1 and SIL 3 according to IEC 61508, ensuring high reliability for critical safety functions.

Technical Data at a Glance:

Decoding Your Provided Information:

• “PNOZ Configurable Safety Relay – Yellow”: Identifies the product family, its key characteristic (configurable), and its standard safety color.

• “751135”: The unique Pilz order number for this specific model.

• “C 48-240VACDC”: “C” stands for Configurable. “48-240VACDC” confirms the wide-range power supply.

• “2 n/o 2 n/o t”: Describes the outputs: Two semiconductor safety outputs and two relay safety outputs, with tamper-proof (configurable) contacts.

• “SEO”: Stands for “Safety Equipment Outlet”. This is a specific Pilz term indicating that the device is a safety relay with configurable, tamper-protected contacts, ready to be integrated into a safety circuit.

How It Works & Typical Use Case:

1. Configuration: A coding module (e.g., for Emergency Stop, Safety Gate, etc.) is inserted into the front of the relay. This defines its behavior.

2. Wiring: Safety devices like an E-Stop button or a safety gate switch are wired to the input terminals.

3. Operation: When the safety circuit is closed and healthy (e.g., E-Stop button is not pressed, gate is closed), the relay energizes. This closes the safety outputs.

4. Safety Function: If a hazard is detected (e.g., E-Stop is pressed), the input circuit breaks. The PNOZ X2.8P instantly de-energizes, opening the safety outputs and cutting power to the dangerous machine functions.

5. Reset: After the fault is cleared, the reset button must be pressed to restart the machine, ensuring a deliberate and safe restart.