Specifications

Crestron PAC2 Professional Automation Control System
Operations Guide – Doc. 5941A Professional Automation Control System: PAC2 • 11
Powering a Hub Segment Pair
In the illustration above, one of the supplied 3-pin mini connectors with installed
jumper wire is plugged into the POWER 1 port. The PAC 2’s internal power supply
is connected to the INT pin; the port’s EXT pin is connected to the 24 pin of each
connector in the segment pair. Since the jumper connects the INT and EXT pins of
the port, 24Vdc is supplied to each connector and the external network devices.
If the power needed for a hub segment exceeds the power available from the internal
supply (50 watts, maximum), remove the jumper from the supplied 3-pin mini
connector to disconnect the internal power supply, then connect the 24Vdc and
ground wires from an external source (such as a Crestron 24 Vdc regulated power
supply) to the EXT and G pins.
NOTE: If a device or Cresnet network connected to a hub segment has its own
power source, do not make any connection to the applicable POWER port. Although
equipment damage is unlikely, Crestron does not recommend applying two power
sources to the same circuit.