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Output Connections
7-Pin Communication Signals Connector
Connect equipment to the UPS output connector receptacle via the seven-pin output connector
(included), or use an APC custom data cable, (must be ordered separately).
The PowerShield communication signals are isolated from its internal circuitry via open collector
opto-coupled transistors. The connection labeled “Signal Return” is a common return point for all
communication signals. In the typical application, the attached equipment digital ground connects to
Signal Return, and pull-up resistors turn the open collector signals into logic levels.
+Voltage output
Voltage output
Signal return.
Low when operating from utility line. Open when operating from
battery.
Low when battery is charged. Open when battery fails the Self Test.
Low when battery is present. Open when battery is missing.
Low when battery is near full charge capacity. Open when operating
from a battery with < 20% capacity.
16-Pin Terminal Board CPW029 Option
The terminal board supplies
uninterruptible power for up to
eight sites grouped around the
power supply.
The terminal board output fuses
automatically reset.
Connect the positive W2 and
negative W1 wires to the number
one and two pins respectively on
the 7-pin communication signal
connector. See diagram.
Output Grounding
Either polarity of the output can be grounded to the ground stud located on the right side of the
display panel. See diagram. Apply a non-oxidant paste to the ground stud prior to connecting the
ground wire.