Micromod Micro-DCI: 53IT5100B Micro-DCI 4-Channel Indicator Totalizer - Manual (Page 17)

53IT5100B Indicator/Totalizer
INSTRUCTION MANUAL
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2.4 Power & Signal Wiring
PREPARATORY: The 53IT5100B can be configured for one to four analog inputs (ANI0-3), one analog
output (ANO0), two control contact inputs (CCI0 and 1), two control contact outputs (CCO0 and 1) and
Datalink network interconnectivity. Therefore, prior to making electrical connections, the particular instrument
configuration should be determined with all assigned inputs and outputs identified to assure proper signal
routing.
Provisions for electrical interconnections are located at the rear of the instrument case. Under ideal conditions
shielded cable may not be required. In noisy locations all system input, output and power wiring should be
enclosed in electrical conduit. System interconnection cables (except for power cables) should be fabricated
from 2-wire shielded signal cable. Signal transmission distance should not exceed the limit specified for the
particular transmitter (refer to applicable technical literature provided for the respective device). Polarity must
be observed when connecting the remote transmitters to the instrument.
The instrument has a vertically mounted terminal strip (TB1) for signal interconnections and a horizontally
mounted terminal strip (TB2) for power wiring. Both terminal strips are located at the rear terminal board of
the instrument case.
SNAP-OUT TERMINAL CONNECTORS
Both terminal strips, TB1 and TB2, have removable plug-in connectors. The upper connector for TB1 has
screw lugs 1 through 12 and the lower connector has screw lugs 13 through 22. All of the screw lugs are on a
single connector for TB2. To remove a signal connector, grasp it securely on both sides with the thumb and
forefinger, rock it gently from top to bottom (not side to side) and pull it straight out. To remove the power
connector, grasp the sides firmly with the thumb and forefinger, rock it gently from side to side and pull
straight out.
 NOTE: The screw lugs on the back of the instrument are designed for 12 – 24 AWG wire. It is
important that the wire be stripped to expose 1/2 inch of conductor before installation.
 WARNING! Instruments that are powered from an ac line service constitute a potential
electric shock hazard to the user. Make certain that these system ac power lines are
disconnected from the operating branch circuit before attempting electrical interconnections.