Emerson Rosemount Reference Manual page 179

Reference Manual
00809-0100-4021, Rev GC
Table 4-11. Troubleshooting guide
(1)
Symptom
Device does not show
up on segment
Device does not stay
(2)
on segment
(1) The corrective actions should be done with consultation of your system integrator.
(2) Wiring and installation 31.25 kbit/s, voltage mode, wire medium application guide AG-140 available from the F
Foundation™ fieldbus configuration
Cause
Unknown
No power to device
Segment problems
Electronics failing
Incompatible network settings
Incorrect signal levels.
Refer to host documentation for
procedure.
Excess noise on segment.
Refer to host documentation for
procedure.
Electronics failing
Other
Section 4: F
OUNDATION
Recommended actions
Recycle power to device
1. Ensure the device is connected to the segment.
2. Check voltage at terminals. There should be 9–32 Vdc.
3. Check to ensure the device is drawing current. There
should be approximately 11 mA.
1. Check wiring (see Figure 2-13 on page
1. Replace device.
1. Change host network parameters (refer to host
documentation for procedure).
1. Check for two terminators.
2. Excess cable length.
3. Bad Power supply or conditioner
1. Check for incorrect grounding.
2. Check for correct shielded wire.
3. Tighten wire connections.
4. Check for corrosion or moisture on terminals.
5. Check for Bad power supply.
1. Replace device.
1. Check for water around the transmitter.
fieldbus.
OUNDATION
fieldbus Configuration
April 2014
23).
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