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Wiring the Contact Input Port
The IPL T PC1 contact closure Input port can be connected to any device providing a closure
to ground (closed = logic 1 and open = logic 0). The contact input is connected to 5 VDC via
a 1k ohm pull-up resistor and must be wired with a ground. This allows the input to be tied
to a device such as a motion detector, alarm, photo eye, and so forth. You can define what
this input will trigger via GC3.3.
1. Connect one end of the input cable to a 3.5 mm, 2-pole captive screw connector
(provided), and plug the connector into the two Input pins (In and _ ) of the shared
Input/IR port connector on the rear panel.
Alternatively, you can wire the contact closure device to pins
1 and 2 (from the left) of the provided 4-pole captive screw
plug (and, if desired, also wire an IR emitter to pins 3 and 4
of the same 4-pole connector; see “Wiring for IR Control”
on the previous page). Plug the wired 4-pole connector into
the rear panel Input/IR connector.
2. Connect the other end of the input cable to the contact
input device that will provide a triggering signal (see the
diagram at right).
IN
SG
Momentary
Switch
INPUT
IR
IPL T PC1 • Installation and Rear Panels 9