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Reference Manual
00809-0100-4021, Rev DA
November 2004
Rosemount 3144P
4-26
FOUNDATION Fieldbus
Table 4-12. Troubleshooting guide
.
Symptom
(1)
Cause Recommended Actions
Device does not show up
on segment
Unknown Recycle power to device
No power to device 1. Ensure the device is connected to the segment.
2. Check voltage at terminals. There should be 9–32Vdc.
3. Check to ensure the device is drawing current. There should be
approximately 11 mA.
Segment problems Check wiring (see Figure 2-12 on page 2-13)
Electronics failing 1. Replace device.
Incompatible network settings Change host network parameters.
Refer to host documentation for procedure.
Device does not stay on
segment
(2)
Incorrect signal levels.
Refer to host documentation for
procedure.
1. Check for two terminators.
2. Excess cable length.
3. Bad Power supply or conditioner
Excess noise on segment.
Refer to host documentation for
procedure.
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.
Electronics failing 1. Replace device.
Other 1. Check for water around the transmitter.
(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 fieldbus Foundation.