Rockwell Automation 21G PowerFlex 750-Series AC Drives Programming Manual - Manual (Page 469)

Rockwell Automation Publication 750-PM001J-EN-P - October 2014 469
Application Notes Appendix B
Fine Tuning
P1195 [Pump Off Level], P1196 [Pump Off Speed], and P1197 [Pump Off
Time] all contribute to the productivity of the well and need to be adjusted. For
more information read the parameter descriptions in
Chapter 3 .
Occasionally the position starts to drift relative to the torque signature. If this
occurs, set P1188 [Pump Off Setup] Bit 1 “Pos Offset” to 1. See
Figure 78 for an
example of what this drift would look like.
Figure 78 - Correcting Drift
Notice how the position has drifted relative to the torque causing a different part
of the waveform to be averaged as the down stroke torque. This drift results in a
false pump off condition. Setting the position offset bit corrects this drift.
Sleep Mode
If P1189 [Pump Off Action] is set to 1 “Always Stop,” 2 “Stop After 1,” or 3 “Stop
After 2,” the Sleep Wake function must be configured. Set the following
parameters.
Parameter Setting
Start Features
P350 [Sleep Wake Mode] 1 “Direct” (Enabled)
P351 [SleepWake RefSel] 1207 (Entered through the Numeric Edit tab.)
P355 [Wake Time] Desired restart time (64800 seconds maximum).