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Reference Manual
00809-0200-4101, Rev AA
July 2008
Rosemount 2051
5-4
Table 5-1. 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 17 mA.
Segment problems
Electronics failing 1. Electronics board loose in housing.
2. Replace electronics.
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. Tighten electronics board.
2. Replace electronics.
Other 1. Check for water in the terminal housing.
(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.