Instruction manual

Power-Supply and Sensor Wiring
continued
RFT9739 Field-Mount Transmitter Instruction Manual 19
Output Wiring Startup TroubleshootingBefore You Begin Getting Started Mounting
Power-Supply and
Sensor Wiring
Figure 4-3.
Power-supply wiring
terminals
Grounding
To ensure proper grounding:
• If the installation must comply with UL, CSA, or SAA standards, refer to
the instructions in one of the following Micro Motion documents:
-
UL-D-IS Installation Instructions
-
CSA-D-IS Installation Instructions
-
SAA-D-IS Installation Instructions
• In most installations, install grounding as illustrated in
Figure 4-4a
(next page).
• For installations in Europe, and to comply with CENELEC standards,
install grounding as illustrated in
Figure 4-4b
(next page).
• To achieve potential equalization and comply with CENELEC
standards for hazardous area installations in Europe, the RFT9739
external ground terminal (see
Figure 4-4b
) should be connected to the
appropriate ground terminals within the hazardous area, using a
potential equalizing line.
Equipment
ground
Power-supply conduit opening
Equipment
ground
Transmitter
power rating
Terminal
labels
85-250 VAC 50/60 Hz L N
12-30 VDC +
−
WARNING
Failure to comply with requirements for intrinsic
safety in a hazardous area could result in an
explosion.
• The transmitter must be properly grounded.
• Follow the instructions below to ground the transmitter.
• For hazardous area installations in Europe, refer to
standard EN 60079-14 if national standards do not apply.