Flowserve 520MD Positioners - Manual (Page 6)

DD User Manual - Logix® 520MD+ Series Digital Positioner FCD-LGENSF0017-00 8/13
© Flowserve Corporation
6
2.4.2 Max Lifetime
Maximum temperature reached since startup.
2.4.3 Min Lifetime
Minimum temperature reached since startup.
2.4.4 Max Reset
Maximum temperature reached since last reset.
2.4.5 Min Reset
Minimum temperature reached since last reset.
2.4.6 Max Power Up
Maximum temperature reached since last power up.
2.4.7 Min Power Up
Minimum temperature reached since last power up.
2.5 Hour Meters
Displays hours of operation.
2.5.1 Lifetime
Number of hours positioner has been in operation.
2.5.2 Reset
Number of hours positioner has been in operation since last
reset.
2.5.3 Power Up
Number of hours positioner has been powered up.
3
ADVANCE DIAGNOSTICS
Allows access to Partial Stroke Test
CAUTION: Starting the Partial Stroke Test will cause
closure member movement. Please, follow all safety
procedures.
3.1 Partial Stroke Test
Parameters needed to run a partial Stroke Test and see
results.
3.1.1 Start Partial Stroke Test
Starts the partial stroke test.
3.1.2 Pst Time Breakaway
Measured when the valve has moved ½ % from the starting
position.
3.1.3 Pst Pressure Difference
The pressure at the breakaway point.
3.1.4 Pst Time to Target
Actual time it took for the valve to arrive within 2% of the final
value.
3.1.5 Pst Time Limit
Time used for pass fail criteria for the partial stroke.
3.1.6 Pst Result
Pass/Fail indication of the test based on the reference time to
target and the actual time to target.
4
CALIBRATION
Gives access to Actuator/Stroke/Friction Calibration, Stroke
Calibration, Analog Output Calibration, and Analog Input
Calibration functions.
4.1 Actuator/Stroke/Friction
Combined calibration that calibrates the internal pressure
sensors of the positioner, the travel of the valve position
(zero and span), and if auto tuning is enabled the gain values
for the positioner are also calculated. Finally, a short
sequence of movements allows the positioner to update a
friction value for the valve assembly. Once set the friction
value will continue to update on its own during normal
operation.
4.2
Stroke
Combined calibration that calibrates the travel of the valve
position (zero and span) and, if auto tuning is enabled, the
gain values for the positioner are also calculated.
4.3
Analog Output
The Analog output calibration is only available for positioners
that have been supplied with the analog output module
installed in the positioner. The Analog output is updated to
match the stroke calibration of the positioner automatically
every time a stroke calibration is done. This calibration is
required if the 4-20 mA signal from the positioner needs to be
spanned to something other than 4-20 mA. This option is
also used to reverse the output if needed. Once setup
properly, this calibration is usually not required for ongoing
maintenance.
4.4
Analog Input
The Analog input calibration is updated to match the stroke
calibration of the positioner automatically every time a stroke
calibration is done. This calibration is required if the 4-20
mA signal to the positioner needs to be spanned to
something other than 4-20 mA. Once setup properly this
calibration is usually not required for ongoing maintenance.