CS AR-02X120 Pizzato Safety module 3NO, category 4

CSAR-02X120 Safety Relay Module Overview

The Pizzato CSAR-02X120 is a safety relay module from the CS AR series, designed for monitoring emergency stop circuits, safety gate switches, and interlocking devices in industrial machinery.

It belongs to the CS AR-02 family, typically used in applications requiring a 3NO safety output configuration to control multiple safety contactors or distributed safety circuits.

Main Function

• Monitoring of safety guard doors and interlock switches
• Emergency stop (E-stop) circuit supervision
• Safe shutdown of industrial machinery
• Control of multiple safety contactors via redundant outputs

Key Features

• Supply voltage: 120 Vac
• Safety outputs: 3 NO (CS AR-02 configuration)
• Safety level: Category 4 / PL e / SIL 3
• Function: Dual-channel safety monitoring for E-stop and guards
• Mounting: DIN rail (22.5 mm compact housing)
• Connection: Plug-in screw or spring terminals (variant dependent)

Safety Performance

The CSAR-02X120 is designed for high-risk industrial applications and complies with:

• EN ISO 13849-1 (Category 4 / PL e)
• IEC 61508 (SIL 3)

This ensures redundant internal safety architecture and safe failure behavior, meaning any detected fault forces the system into a safe state.

How It Works (Simple Explanation)

• Door opens → machine stops immediately
• Emergency stop pressed → power is safely cut
• Fault detected → system transitions to safe state

Typical Applications

• Machine guarding systems
• Industrial automation lines
• Robotics and conveyor safety systems
• Packaging machinery
• General industrial safety circuits

Quick Summary

The CSAR-02X120 is a 120 Vac safety relay module with a 3NO output configuration, used in Category 4 / PL e / SIL 3 safety systems to ensure reliable and redundant machine shutdown in industrial environments.