AZM40 Solenoid Interlock

The AZM40 has a symmetrical design, so it can be mounted on either side, for left or right hinged doors. The actuator can approach the switch from 180°, for door applications which do not close in a 90 degree angle, or that open upwards in a 45 degree angle. The angle flexibility ensures that the interlock can be easily installed even in confined and difficult to access locations.

The AZM40 works on the bistable principle: the interlock only requires power when the door is to be locked or unlocked. An advantage of the bistable principle is low energy consumption, as the interlock does not constantly use power to keep the guard locked or unlocked. It retains the current position in the event of a power failure. 

The inclusion of the RFID sensor offers the option of individual coding: The basic version of the RFID sensor responds to any AZM40 target actuator; The “I1” version only accepts the coded ID number of the specific target actuator which is taught in during the first start-up; The “I2” version allows the teach-in process to be repeated, allowing replacement of a lost or damaged actuator, with a 10 minute delay with the teaching process.

Three LEDs are integrated to indicate operating conditions. The bottom LED (green) indicates the sensor has power and is ready for operation, the middle LED (yellow ) indicates guard status (open/closed), and the top LED (red) flashes codes to indicate various types of faults or errors. These LEDs are visible from three sides of the switch body, so they can be viewed regardless of the installation orientation.

The AZM40Z model is for personnel protection (interlock monitored) applications. The safety outputs are switched on only when the safety door is closed and the solenoid is locked. 
The AZM40B model (actuator monitored) can be used in applications for process protection. In this variant, the safety outputs are actuated as soon as the safety door is closed. With this device, locking the interlock is not absolutely necessary.

The AZM40 series is compliant with North American and International standards such as cULus and CE. It’s two-channel input signal meets PLe/Category4 (ISO 13849) or SIL3 (IEC 61508) for both its interlock and guard locking function. It is a Type 4 interlock per ISO 14119, with a high coding level with the individual coding option (I1 or I2).