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Transducer Block
DD Methods and DD Menu
Instant Trouble Shooting
This is a help utility which provides troubleshooting instructions such as indicating the
points and parameters to be checked for troubleshooting. This method does not contain
a utility to change parameter settings. For troubleshooting of device statuses, see
“Troubleshooting” on page 175.
Instant troubleshooting procedure:
1. Commanded to check DEVICE_STATUS in the resource block
2. Check XD_ERROR and the remedy will be displayed if an error has been detected
3. Check RELEASE_FAIL_SAFE
4. Commanded to check the mechanical linkage, piping, and installation conditions
5. Commanded to check the correct operation of the device hardware
Self Check Execution
The self-check measures the valve’s characteristics in the same fashion as in auto
tuning, and makes no changes to parameter settings.
Self Check Execution procedure:
1. AO/TB block mode check
2. Self check execution: AUTO_TUNE_EXEC
Signature Execution
This method guides you through each step to perform signature measurement (see
“Diagnostics” on page 169). Signature measurement entails off-line diagnostics
functions to measure characteristics of the valve and positioner. Comparing the current
signature data with the previously measured data gives clues to identify the
deterioration status and a possible need of maintenance.
Signature execution procedure:
1. AO/TB block mode check
2. Signature measurement execution:
a. Measure all:
❑ Setting all signature measurement conditions
❑ Executing signature measurement (SIGN_MEAS_EXEC)
❑ Uploading data (see “Upload Signature Data” on page 236).
b. Measure actuator signature: Setting STD_ACT_SIGN_SET:
❑ Executing signature measurement (SIGN_MEAS_EXEC)
❑ Uploading data (see “Upload Signature Data” on page 236).
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