6-2
6-1-2. Using a HART Communicator
If you have a HART Communicator connected to the SVP, you can perform a selfdiagnostic:
step Procedure
1 Make sure the HART Communicator is in the Ready State.
2 Select [5. Device Status] >> [2. Failures] or [3. Notices].
3
If the message is displayed, see the following page for a list of error conditions as
well as the HART error code and possible solutions.
If after reading this troubleshooting section and solutions, the specifications of the SVP
still do not match your requirements, or the SVP fails, contact an Azbil Corporation
representative.“Troubleshooting Codes” on page 6-4.
6-1-3. General troubleshooting
If, after attaching your SVP to a control valve and performing Auto-Setup or manual
calibration, you are experiencing performance problems, follow the troubleshooting steps
below.
If the troubleshooting procedures below do not fix the problem, contact an Azbil Corporation
representative.
SVP does not operate (no output air pressure)
step Procedure
1
Make sure that the SVP feedback lever is not exceeding a 20° angle of rotation.
If it is, add an extension bracket to the feedback lever to provide the necessary
feedback lever length.
2 Check for air leaks in air supply.
3 Check electrical input signals.
4 Check Auto/Manual switch in Auto.
5 Check the flapper and the filter clears.
6
If communication can be made with a Commstaff or HART Communicator,
perform self diagnostics and take action based on errors messages. Refer to
“Troubleshooting Codes” on page 6-4.
Absence of full stroke or slow response
step Procedure
1 Check the zero (fully closed) and span (fully opened) are properly adjusted.
2 Check the filter and the flapper clean.
3 Check the EPM drive signal is within range of 50 ±25% duty.
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