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Fail-safe Action
Transducer Block
Fail-safe Action
If the A/D converter failure, position sensor failure, or deviation error event occurs in the
XD_ERROR, the transducer block activates the specified fail-safe action by cutting the
current signal to the I/P module to zero. In addition, in the event of position sensor
failure or deviation error, the fail-safe action is not deactivated even when the cause of
the failure/error is cleared. Writing Clear non-latch to the parameter
RELEASE_FAILSAFE deactivates the fail-safe action. The fail-safe action activated in
the event of A/D converter failure is deactivated automatically when the cause of the
failure is cleared.
Operation Result Integration
The FVP110 has a function to integrate the following operation result quantities
individually. To reset an integrated quantity, write 0 to the corresponding parameter.
TOTAL_CYCLE_
COUNT
Incremented by 1 at each change in the direction of the valve
action, indicating the total number of times of changes in direc-
tion of valve actions.
TOTAL_TRAVEL Total travel distance of the stem position, shown as a percent-
age of the valve position span.
TOTAL_OPEN_TIME
and TOTAL_CLOSE_
TIME
TOTAL_CLOSE_TIME contains the integrated time periods (in
hours) when the valve position is equal to or less than the
thresholds previously set in OPEN_CLOSE_THRESHOLD.
TOTAL_OPEN_TIME is the integrated time periods (in hours)
other than TOTAL_CLOSE_TIME.
TOTAL_NEAR_
CLOSE_TIM
Total time period (in hours) when the valve position is within the
threshold set in NEAR_CLOSE_THRESHOLD.
SERVO_WARN_
COUNT
Total number of times the servo output drift warning occurred.
Indicates the total number of times a drift warning occurred
regarding the output current to the I/P module.
Recording of Revisions
When you make a change to the setting of a static parameter, the change is counted-up
in the parameter ST_REV and an update event is generated.
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