Function of the deactivation unit - VdS shunt lock

Deactivation request

  1. A deactivation unit deactivates an adjacent cylinder when the deactivation request line (pin 13) is pulled to ground potential by the activation master or by the burglar alarm panel (EMZ).
  2. A deactivation unit activates its adjacent cylinder if the deactivation request line (pin 13) is high impedance. The output of the activation master and the output of the burglar alarm system (EMA) must both be high-resistance at the same time.

Deactivation acknowledgement

  1. A deactivation unit pulls the deactivation acknowledgement line (pin 14) to ground as long as its adjacent locking cylinder is activated.
  2. It also pulls the deactivation acknowledgement line (pin 14) to ground as long as the bolt monitoring input (pin 12) has ground potential. For this reason, use bolt contacts that disconnect the bolt monitoring input from ground potential as soon as the bolt is inserted (potential-free normally closed contact).
  3. The deactivation acknowledgement line does not become highly resistive until all deactivation units have successfully deactivated their adjacent locking cylinder and all bolts have been advanced when evaluating the bolt contact.See LSM manual on how to programme.