73
Reference Manual
00809-0100-4026, Rev KC
Electrical Installation
October 2018
Electrical Installation
4.2 Wiring and power supply requirements
Wiring and power supply requirements can be dependent upon the approval certification. As with all
F
OUNDATION™ Fieldbus requirements, a conditioned power supply and terminating resistors are required
for proper operation.
4.3 Cable/conduit entries
The electronics housing has two entries with ½ - 14 NPT threads. Optional M20×1.5 minifast
®
and
eurofast
®
adapters are also available. The connections are made in accordance with local or plant
electrical codes.
Make sure that unused ports are properly sealed to prevent moisture or other contamination from
entering the terminal block compartment of the electronics housing.
Note
Use the enclosed metal plug to seal the unused port. The temporary orange plastic plugs used at delivery
are not sufficient seals!
4.4 Grounding
The housing should always be grounded in accordance with national and local electrical codes. Failure to
do so may impair the protection provided by the equipment. The most effective grounding method is
direct connection to earth ground with minimal impedance. There are two grounding screw
connections provided. One is inside the field terminal side of the housing and the other is located on the
housing. The internal ground screw is identified by a ground symbol:
Figure 4-1. Ground Screws
Note
Grounding the transmitter housing using the threaded conduit connection may not provide a sufficient
ground.
A Internal ground screw
B External ground screw
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