© Magna Electronics Pte Ltd.
Page 8
6. WIRING
The COBALT is supplied with a 7-way wire loom that plugs directly into the lock. The wires are colour coded with
three being essential connections and four optional. Control of the lock is achieved by using the three power wires,
whilst door and bolt position monitoring are available when desired. Connect the COBALT as per the chart:
RED
POS
Positive connection to DC power supply (12
–24V)
Power
BLACK
NEG
Negative connection to DC power supply (12
–24V)
BLUE
CTRL
Switched positive control input
VIOLET
NO
Normally open contact of the bolt position monitor
Bolt Position Switch
VIOLET
COM
Common contact of the bolt position monitor
WHITE
NO
Normally open contact of the door position monitor
Door Position Switch
WHITE
COM
Common contact of the door position monitor
6.1 Fail Safe Connection
When wiring the COBALT, the positive voltage is connected to RED, negative is connected to BLACK and a
switched positive voltage wire connected to BLUE. In Fail Safe configuration applying voltage to the COBALT
signals it to lock. The lock signal in Fail Safe configuration is active high.
6.2 Fail Secure Connection
When wiring the COBALT, the positive voltage is connected to RED, negative is connected to BLACK and a
switched positive voltage wire connected to BLUE. In Fail Secure configuration applying voltage to the COBALT
signals it to unlock. The lock signal in Fail Secure configuration is active low.
DC Power Supply
NO
NC
Bolt Position Switch (user monitor)
Door Position Switch (user monitor)
WHITE
WHITE
VIOLET
VIOLET
BLUE
BLACK
RED
Lock
Wire
Loom
-
+
WHITE
WHITE
VIOLET
VIOLET
BLUE
BLACK
RED
NC
NO
Bolt Position Switch (user monitor)
Door Position Switch (user monitor)
Lock
Wire
Loom
DC Power Supply
-
+
