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6. WIRING
The YD25K is fitted with eleven connectors; eight are optional and provide monitoring of the lock pin, key, and door
positions. Control of the lock is achieved by using the remaining three wires however a reduced function two wire
mode is available if desired. Connect the YD25K as per the following chart.
+
1
CL
2
Power
-
3
C
4
Door Position Switch
NO
5
C
6
NO
7
Bolt Position Switch
NC
8
C
9
NO
10
Key Position Switch
NC
11
6.1. Three wire connection
Three wire mode differs between fail safe and fail secure configurations but both require a switched power supply
connected to terminals '1' and '3'. Wire links (not supplied) are connected from terminals '2' to '11' and '1' to '9' for
fail safe. Additionally, manual override of the lock is achieved by utilising the key cylinder, electrically for fail safe and
mechanically for fail secure.
The monitor switches are optional
Fail Safe
6.2. Two wire connection (Fail Secure Only)
A link (not supplied) is connected between
terminals '1' and '2'. The YD25K will be locked when
no power is applied and will unlock when power is
applied.
The
operation
regardless of door or strike plate position.
Additionally, mechanical manual override of the
lock is achieved by utilising the key cylinder.
6.1. Monitors
The eight monitor connectors found on the YD25K are available to provide door, bolt, and key position feedback. If
desired, wires can be run from these connections to integrate with access control or alarm systems to provide full
monitoring. When a three wire fail safe operation is chosen the key position monitor is not available.
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The power and control (CL) wires
must be permanently connected
connections
remains
the
same
Positive connection to DC power supply (12 – 24V)
Switched positive control input
Negative connection to DC power supply (12 – 24V)
Common contact of the door position monitor
Normally open contact of the door position monitor
Common contact of the bolt position monitor
Normally open contact of the bolt position monitor
Normally closed contact of the bolt position monitor
Common contact of the key position monitor
Normally open contact of the key position monitor
Normally closed contact of the key position monitor
The monitor switches are optional
The monitor switches are optional
The power and control (CL) wires
must be permanently connected
connections
Fail Secure
Switched power supply permanently
connected
connections
Fail Secure
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