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2.2 WIRING THE VST KEYPADS
The VST keypads come with a 100cm long AWG-26 removable 12
conductor cable fitted with rubber boot.
2.2.1 Wire Colours
There are 12 wires for the VST keypads, not all will be needed for each
installation. The unused wires should always be terminated and left
unconnected.
Black 0V (Power Supply -)
Red +V (10V to 27V D.C. Power Supply +)
Dark Green
REX (Request to EXit) Input, connect switch between
REX and 0V
White
Auxiliary Input, connect switch or door contact between
Auxiliary Input and 0V
Grey Lock Relay N/O
Violet Lock Relay Common
Brown Lock Relay N/C
Yellow Auxiliary Relay N/O
Blue Auxiliary Relay Common
Orange Auxiliary Relay N/C
Pink Tamper Output (Open Collector)
Light Green Chassis Earth connection.
IMPORTANT: When using the VST keypad in an area subject to static
discharges the chassis of the keypad should be connected to EARTH via
the Light Green wire. It is highly recommended that this always be done
no matter what the environment.
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