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Series 90–70 Remote I/O Scanner User’s Manual – July 19928
Powering Two Racks from a Single Power Source
Except for the 125VDC supply, each of these power supplies can be used to power two
racks if the total current requirement for both racks does not exceed the power
supply’s load capacity. The rack that does not contain the Power Supply must not have
a load greater than 5.2 amps.
Connection from the rack with the power supply to the second rack is made through a
cable (catalog number IC697CBL700) three feet (one meter) in length, which is
terminated at both ends with 9–pin D–connectors. This cable carries both +5 volt
power and control signals (power sequencing signals only) to the second rack.
FACE
PLATE
SECOND
RACK
a42134
123456789
POWER
SUPPLY
FIRST
RACK
TWO
RACK
POWER
CABLE
INSTALL CABLE
SO THAT THE
INDICATED END
IS SUPPLYING
POWER