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Reference Manual
00809-0100-4444, Rev AC
Section 9: Troubleshooting
January 2015
Tro ubles hooting
Pulse output at zero,
regardless of flow
• Wiring error • Check pulse output wiring at terminals 3 and 4. Refer to wiring
diagram for pulse counter and pulse output. See Connect pulse
output on page 43.
• PZR activated • Remove signal at terminals 5 and 6 to deactivate the PZR.
• No power to transmitter • Check pulse output wiring at terminals 3 and 4. Refer to wiring
diagram for pulse counter and pulse output.
• Power the transmitter
•Reverse flow •Enable Reverse Flow function
• Electronics failure • Verify transmitter operation with an 8714D Calibration Standard or
replace the electronics stack
• Pulse output incorrectly
configured
• Review configuration and correct as necessary
Communication problems
with the Handheld
Communicator
• 4–20 mA output configuration • Check analog power switch (internal/external). The Handheld
Communicator requires a 4–20 mA output to function.
•Communication interface wiring
problems
• Incorrect load resistance (250 Ohm minimum, 600 Ohm maximum)
Check appropriate wiring diagram
• Low batteries in the Handheld
Communicator
• Replace the batteries in the Handheld Communicator – see the
communicator manual for instructions
• Old revision of software in the
Handheld Communicator
• Consult your local sales office about updating to the latest revision
of software
Error Messages on LOI or
Handheld Communicator
•Many possible causes depending
upon the message
•See Table 9-1 on page 152, Table 9-2 on page 154, and Table 9-3 on
page 155 for the LOI or Handheld Communicator messages
Discrete input does not
register
• Input signal does not provide
enough counts
• Verify that the discrete input provided meets the requirements in
Section 3.4.3 Connect discrete input
• Perform a loop test to validate the analog control loop
• Perform a D/A trim. This allows the calibration of the analog output
with an external reference at operating endpoints of the analog
output.
Table 9-7. Common Magmeter Issue (continued)
Symptom Potential cause Corrective action