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Click to play videoclip or 'Right click' and choose 'Save target as' to download. (2.3 MB) Electric Doorlocks
All outer doors are locked and unlocked electrically. For safety reasons, locks can be operated manually with a key. This makes it possible to unlock the doors during a possible power failure.
The locks are connected to a P-NET slave module and are then controlled by messages sent from a master controller connected to P-NET.
The motor and micro switches for each lock are connected to a PD 3120 I/O, which is located close to the door. A calculator program in each module, takes care of the processing of the signals to and from the lock and switches.
A set of status lamps and a beeper, indicating the current status of the doorlock and alarm system, is located at each door.
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