Dual Voltage Input Card
Most systems are shipped with dual voltage input cards.
These have a rotary switch that selects OFF, 120 VAC or
277 VAC.
When 277Vac is connected there will be no voltage on the
120 Volt terminal and similarly when 120 Volts is selected
there will be no voltage on the 277Vac connector.
In the OFF position both the 120 and 277 volt inputs are dis-
connected.
The 277 Vac primary is protected with a thermal fuse, the
120 Vac primary is protected with a 1amp circuit breaker.
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BBREAKER
DigiLink
The DigiLink Dry Contact Input Card is used to interface to
non LC & D equipment.
The DigiLink card is connected to the GR 2400 bus in the
usual way through the RJ 45 Connectors or the“1234” bus
connector.
It is most usually mounted inside one of the relay panels but
may also be mounted in a 6" by 4" by 4" box in any conve-
nient location.
When used with an Occupancy Sensor an additional power
supply may be needed to provide the auxiliary voltage
needed by that brand of sensor.
For the hook up diagrams below only some inputs are illus-
trated in order to conserve diagram space. The additional
inputs are wired the same way.
Note that a DigiLink appears in the clock programming win-
dows as a 14 button switch. Each input is programmed in
the exact same way as a switch button.
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