MediaMatrix PCU 2100 Manual - page 8
Page 8
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PCU 2100 Integrator’s Manual
Connections
The circuits of the PCU 2100 are terminated using removable Euro connector blocks for three types of
connections:
• Bi-polar (three-pin) DC power for PCU Series paging stations
• Single-ended (two-pin) DC power for remote control panels
• Fault Contacts (three-pin)
Each connection requires termination to a removable Euro block (included) that plugs into a mating
connector header on the rear panel. The preferred method for making these connections consists of
three steps as shown in the illustration. As with any electronic connection, care should be taken to
ensure that the termination is solid. There should be no stray wire strands, kinks or nicks in the wire
jacket for a proper termination. Use a wire type that is appropriate for the load, cable length and
other jobsite conditions.
STEP 1. Carefully strip the cable jacket and the conductor insulation so that your wire
looks something like this. The distance between the end of the jacket and the tips of
the conductors should be approximately .075”. The strip length of the conductor wire
should be approximately .310” for proper termination into the Euro connector.
STEP 2. Carefully insert each conductor into the opening of the Euro connector. Take
care to ensure that polarity is observed and that the conductors are properly twisted to
make a solid connection. While holding the cable so each conductor is firmly seated in
the connector, carefully tighten down each screw of the connector. While turning each
screw, look closely at the wire and make sure that the action of the screw does not
“push” the wire out of the connector. Verify the integrity of your connection by gently
pulling on each conductor to ensure that it is terminated properly.
STEP 3. Take the completed wire/connector assembly and carefully plug it into the
matching connector header on the PCU 2100’s rear panel. Take care that you are plug-
ging the connector into the proper set of pins on the header. There is no barrier
between adjacent circuits, so it is possible to connect to pins of an adjacent channel. If
you’re not careful, instead of connecting to Positive, Ground & Negative, you may end
up connecting Ground, Negative & Positive, etc. Your finished connection should look
like this.....
Configuration
Each bank of the PCU 2100 includes two separate supply outputs. For the PCU Series paging stations
there are 4 bi-polar circuits. Each of these circuits is capable of supplying power to 2 stations simul-
taneously, for a total of 8 loads for each bank. When operating in Dual Mode, a total of 16 paging
stations can be connected simultaneously. There is also one single-ended supply per bank for power-
ing ControlMatrix remote control panels. This circuit can power up to 10 panels simultaneously from
the four connections provided for each bank. The outputs of the PCU 2100 outputs are regulated and
use special circuits designed to minimize losses and heat dissipation, giving high reliability. Maximum
combined current for all single-ended connectors is 0.5A per bank.
Additional connectivity is provided for terminating the RS-485 lines of ControlMatrix field devices.
Each bank includes an 8x1 “bus” that makes it easy to land multiple data lines. A single line can
then be extended to the MediaMatrix head-end, simplifying termination. NOTE: The RS-485 connec-
tors are “pass through” circuits with no active electronics or supervision.