49
Reference Manual
00809-0100-4108, Rev CA
Electrical Installations
March 2017
Electrical Installations
Note
The use of a pin or ferrule wire terminal is not recommended as the connection may be
more susceptible to loosening over time or under vibration.
4. Plug and seal unused conduit connection on the transmitter housing to avoid moisture
accumulation in the terminal side.
4.6.4 Grounding the transmitter
Signal cable shield grounding
Signal cable shield grounding is summarized in Figure 4-8 on page 49. The signal cable
shield and unused shield drain wire must be trimmed and insulated, ensuring that the signal
cable shield and drain wire do not come in contact with the transmitter case. See
“Transmitter case grounding” on page 50 for instructions on grounding the transmitter
case. Follow the steps below to correctly ground the signal cable shield.
1. Remove the field terminals housing cover.
2. Connect the signal wire pair at the field terminals as indicated in Figure 4-6.
3. At the field terminals, the cable shield and shield drain wire should be trimmed close and
insulated from transmitter housing.
4. Reattach the field terminals housing cover; cover must be fully engaged to comply with
explosion proof requirements.
5. At terminations outside the transmitter housing, the cable shield drain wire should be
continuously connected.
a. Prior to the termination point, any exposed shield drain wire should be insulated as
shown in Figure 4-8 (B).
6. Properly terminate the signal cable shield drain wire to an earth ground at or near the
power supply.
Figure 4-8. Wiring Pair and Ground
A. Insulate shield and shield drain wire
B. Insulate exposed shield drain wire
C. Terminate cable shield drain wire to earth ground
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