Micromod Micro-DCI: 53MC5000 Multi-Loop Process Controller Installation - Manual (Page 16)

2.4 INTERCONNECTIONS
2.4.1 PREPARATORY
The 53MC5000 can be configured as any of a variety of conventional controller types, enabling it to
be easily adaptable for service in numerous system applications. Prior to electrical interconnection,
the particular instrument configuration should be established and all inputs and outputs identified
and assigned to assure proper signal routing.
2.4.2 WIRING PROCEDURE
Provisions for electrical interconnections are located at the rear of the instrument case. Under ideal
conditions the use of shielded cable may not be required. In noisy locations all system input, out-
put and power wiring should be enclosed in electrical conduit. Rigid conduit should be terminated
by using a short length of flexible conduit at the rear of the case to reduce stress. System intercon-
nection wiring (except for power cable) should be fabricated by the use of 2-wire shielded signal ca-
ble. 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 ob-
served when connecting the remote transmitters to the Controller.
The Controller is available with integral rear case wiring terminal strips. Power wiring is connected
to separate screw type terminals on the rear of the instrument case. Optional Cord Set connections
are discuss in Section 2.5 of Instruction Bulletin 53MC5000.
NOTE
The screw terminals 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.
Refer to the Interconnection Diagrams, Figures 2-11 through 2-14 of Instruction Bulletin
53MC5000, to supplement the following description of system interconnections.
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.
2.4.2.1 POWER INPUT (AS SPECIFIED)
2.4.2.1.1 DC Power:
Connect the remote 24 V dc power supply to the Controller, as follows:
1. Connect (+) input line, via remote SPST switch, to terminal "L".
2. Connect (-) input line to the system bus bar. The bus bar should be connected to a good
earth ground (#8 AWG wire is recommended). Individual wires should be run from the Con-
troller Power Common and Signal Common terminals to the bus bar. The chassis should be
grounded by connecting terminal "G" to earth ground.
MODULAR CONTROLLER QUICK START
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