Schmersal has launched the RFID-based AZM40 solenoid interlock, which, with dimensions of 119.5 mm × 40 mm × 20 mm, is the smallest electronic solenoid interlock in the world, according to the manufacturer. Thanks to the 180° angular flexibility of the actuator, it can be infinitely adjusted to the AZM40 so that the guard locking can also be used for flaps that do not close at a 90° angle or that open upwards at a 45° angle.
The solenoid interlock can also be mounted on standard 40 mm profiles without any protrusion. Its locking force is 2000 N. Thanks to integrated RFID technology, the 'high' coding level is achieved. This means that the guard locking offers increased protection against tampering in accordance with the requirements of DIN ISO 14119.
The solenoid interlock works according to the bistable operating principle: it retains its current position in the event of a power failure. Even in the event of a power failure, the safety gate remains securely locked during dangerous overtravel movements. For applications with personnel protection (guard locking monitored), the safety outputs are switched on when the safety gate is closed and guard locking is disabled.
The 'AZM40B' version (actuator monitored) can be used for applications with process protection. With this variant, the safety outputs are already switched on when the safety door is closed. It is not absolutely necessary to lock the guard locking with this device.