September 2021
Installation, Operation and Maintenance Manual
VCIOM-01249-EN Rev. 0
82
View Routines
Section 10: View Routines
10.4.2
Torque Profile
The torque profile routine gives important information on the actuator working conditions
in comparison with a previously memorized reference profile. It can give an indication of
a change in the process conditions. Details are given of the reference and latest torque
expressed in % of the nominal torque.
At the end of a full stroke in opening or closing, the F01-2000 stores the 3 maximum
torque values in position intervals 0%-10%, 10%-90%, 90%-100% in opening, and the 3
maximum torque values in position intervals 100%-90%, 90%-10%, 10%-0% in closing. Time
and date of strokes are also saved. The above data are updated at the end of every full valve
stroke and the previous ones are lost. Function “set torque reference”, in the SET-UP MENU,
Maintenance, (Section 7), allows to save the “torque profile” data in the “torque profile
reference” with date and time. The “torque profile reference” will not be updated until a
new “set torque reference” command is entered. The user can compare the last torque
profile relevant to the last valve stroke with the torque profile reference saved before.
The following definitions will be used:
•
Breakout: maximum torque % in position interval 0-10% in opening or 100%-90% in
closing = max. % of torque to unseat the valve.
•
Peak running: maximum torque % in position interval 10-90% in opening or 90%-
10% in closing = max. % of torque when the valve runs from Breakout to Ending
(maximum mid-travel).
•
Ending: maximum torque % in position interval 90-100% in opening or 10%-0% in
closing = max. % of torque to seat the valve.
The following data may be viewed:
Closing torque
•
Breakout %
•
Breakout reference %
•
Peak run %
•
Peak run reference %
•
Ending %
•
Ending reference %
•
Date of the last stroke
•
Date of reference (same of opening)
Opening torque
•
Breakout %
•
Breakout reference %
•
Peak run %
•
Peak run reference %
•
Ending %
•
Ending reference %
•
Date of the last stroke
•
Date of reference (same of closing)
