Operation - BQT YD30 Cobalt Installation And Operating Instructions Manual

6.3 Jumper position
The fail mode of the COBALT is factory set as Fail Safe, i.e. in the event of a power cut the COBALT will unlock.
Before the lock is installed this can be changed to Fail Secure by repositioning the jumper located next to the 7-way
plug on the end of the lock. Select the desired jumper location as indicated:
Jumper in Fail Safe position.
Fail Safe = Fail Unlocked
Fail Secure = Fail Locked

7. OPERATION

7.1 Fail Safe Operation
Assume the lock is installed and wired, the door is open and there is voltage applied to the BLUE wire. As the door
closes the COBALT senses the door approaching and activates the appropriate bolt pin to pull the door into centre
alignment. Once the first bolt pin has fully extended, the second bolt pin activates and drives to its full extension. If
the door closes to a centre aligned position quickly then both bolt pins activate at the same time rather than one
leading the other. The Bolt Position and Door Position monitors will have changed state as the door is moved into
place and secured.
To unlock the door, voltage is removed from the BLUE wire. The COBALT will immediately release and will do so
even when significant load is being applied to the door. With the door now open the Bolt Position and Door Position
monitors change state again. The COBALT will remain unlocked as long as the door is open but will instantly re-
lock when voltage is applied to the BLUE wire and the door is closed.
In the event of a power failure, voltage is removed from the BLUE wire and the COBALT unlocks.
7.2 Fail Secure Operation
Assume the lock is installed and wired, the door is open and voltage is removed from the BLUE wire. As the door
closes the COBALT senses the door approaching and activates the appropriate bolt pin to pull the door into centre
alignment. Once the first bolt pin has fully extended, the second bolt pin activates and drives to its full extension. If
the door closes to a centre aligned position quickly then both bolt pins activate at the same time rather than one
leading the other. The Bolt Position and Door Position monitors will have changed state as the door is moved into
place and secured.
To unlock the door, voltage is applied to the BLUE wire. The COBALT will immediately release and will do so even
when significant load is being applied to the door. With the door now open the Bolt Position and Door Position
monitors change state again. The COBALT will remain unlocked as long as the door is open but will instantly re-
lock when voltage is removed from the BLUE wire and the door is closed.
In the event of a power failure, voltage is removed from the BLUE wire and the COBALT locks if the door is closed.
© BQT Solutions (SEA) Pte Limited
Jumper in Fail Secure position.
= Power To Lock = PTL
= Power To Open = PTO
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