Schmersal
AZ200 Keyed Interlock Switch - Thermoplastic Housing

Key Features

  • Tamper resistant … frequency-matched switch and actuator required for operation.
  • Non-contact sensing … for long term reliability.
  • Dual purpose handle … modern, ergonomic design—no additional door handles are needed.
  • Integral LED diagnostics … indicates operating states
  • Integral self-monitoring and door detection sensors … satisfy requirements of Safety PLe to EN ISO 13849-1, Control Category 4 to EN 954-1. 
  • One-hand emergency release … hazardous area can be left quickly and safely.
  • Switch and actuator do not protrude into door opening … no risk of injury or damage from a protruding actuator.
  • Dual PNP 250 mA safety outputs … for application versatility.
  • Designed for “daisy chaining”… up to 31 devices, max 200 m, can be wired in series without detriment to safety performance level.

Part Numbers

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The AZ 200 pulse-echo based non-contact safety interlock is designed for use with movable machine guards/access gates which must be closed for operator safety.

The AZ 200 consists of an interlock switch and actuator unit with door handle and optional emergency exit handle. The actuator is always inserted into its housing, protecting the actuator and the operator against damage and injury. Utilizing pulse-echo sensor technology, the actuator and interlock can have an offset of ±5 mm and the actuator still engages the interlock. A sensor stimulates a coil in the actuator, which in turns sends a signal back to the sensor. The pulse-echo technology provides diagnostic information and detects and indicates any misalignment at an early stage. Two different actuator designs accommodate both sliding or hinged guards.

The AZ 200 interlock is a dual channel design with two shortcircuit proof, safe PNP outputs, each of which can switch up to 250 mA. It features one electronic diagnostic output that can signal errors before the safety outputs are switched off, thus enabling a controlled shutdown of the machine. 

With continuous internal function tests, the monitoring of the safety outputs and the use of door detection sensors, up to 31 AZ 200 safety interlocks with one diagnostic output can be wired in series without detriment to the safety performance level/control category (PLe to EN ISO 13849-1/ Category 4 to EN 954-1).


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