© BQT Solutions (SEA) Pte Limited
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6.3 Jumper position
The fail mode of the COBALT-mini is factory set as Fail Safe, i.e. in the event of a power cut the COBALT-mini 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:
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-mini 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-mini 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-mini 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-mini 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-mini 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-mini 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-mini 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-mini locks if the door is
closed.
Fail Safe
= Fail Unlocked
= Power To Lock
= PTL
Fail Secure = Fail Locked
= Power To Open
= PTO
Jumper in
Fail Safe
position.
Jumper in
Fail Secure
position.
