O & M Manual
14
REV D, 2/2007
Part 4 – Transmitter Electrical Installation
4.1 General
The TCSMA loop-powered instrument is a 16-35 VDC
powered transmitter.
WARNING: Do not connect AC line power to the 2-wire
module. Severe damage will result.
Important Notes:
1.
Use wiring practices that conform to all national, state
and local electrical codes.
2. Do NOT run sensor cables or instrument 4-20 mA output
wiring in the same conduit that contains AC power wiring.
AC power wiring should be run in a dedicated conduit to
prevent electrical noise from coupling with the
instrumentation signals.
4.2 Power
A separate DC power supply must be used to power the
instrument. The exact connection of this power supply is
dependent on the control system into which the instrument
will connect. See Figure 4-1 for further details. Any general
twisted pair shielded cable can be used for connection of the
instrument to the power supply. Route signal cable away
from AC power lines, adjustable frequency drives, motors, or
other noisy electrical signal lines. Do not run sensor or
signal cables in conduit that contains AC power lines or
motor leads.
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