Rockwell Automation 20B PowerFlex 700 Custom Firmware - Pump Off - Manual (Page 6)

6 PowerFlex 700 with Vector Control Option Custom Firmware
Rockwell Automation Publication 20B-IN020C-EN-P - January 2014
APP
LIC
AT
IONS
O
il W
ell
P
u
mp
683 [Pump Off Config]
Sets the torque data to use for Pump Off control.
Default:
Options:
0
0
1
2
“Automatic”
“Automatic”
“Position”
“Cycle”
“Automatic” (0) - The downstroke torque is used if the torque waveform synchronizes with previously saved
waveform. If the position was not found after 6 cycles, the cycle torque is used. Bit 3 in [Pump Off Status]
indicates if cycle torque is used.
“Position” (1) - The downstroke torque is used to determine the “pump off” condition. The torque waveform
needs to be able to re-synchronize with the previously saved waveform.
“Cycle” (2) - The full pump cycle torque is used to determine the “pump off” condition.
684 [Pump Off Action]
Selects if the drive changes speed or stops during a “pump
off” condition.
Default:
Options:
0
0
1
2
3
“Change Spd”
“Change Spd”
“Always Stop”
“Stop After 1”
“Stop After 2”
“Change Speed” (0) - When a “pump off” condition is detected, speed is reduced by a selected percentage
and runs for the time in parameter 688. If condition continues, speed is reduced a second time. The pump
remains at this speed until the “pump off” condition no longer exists.
“Always Stop” (1) - Stops pump when a “pump off” condition is detected. The pump remains stopped for the
time entered in Sleep Time parameter 183.
“Stop After 1" (2) - When a “pump off” condition is detected, speed is reduced by a selected percentage and
runs for the time in parameter 688. The pump stops if torque continues to change at the reduced speed. The
pump remain stopped for the time entered in parameter 183.
“Stop After 2" (3) - When a “pump off” condition is detected, speed is reduced by a selected percentage and
runs for the time in [Pump Off Time], parameter 688. If torque change continues, speed is reduced a second
time by the selected percentage. The pump stops if torque change continues at this reduced speed. The
pump remains stopped for the time entered in [Sleep Time], parameter 183.
685 [Torque Setpoint]
Sets the torque level for Pump Off when Pump Off Control is
set to Fixed Setpoint.
Default:
Min/Max:
Units:
0.0%
0.0/100.0%
0.1%
686 [Pump Off Level]
Sets the percent (%) change in torque from the baseline or
setpoint that indicates the well is in a pump off condition.
When the pump is started it creates a baseline torque level,
assuming the well is full. For example, if the baseline torque
is 50% and the [Pump Off Level] is set to 10%, the drive
goes into pump off when the torque drops to 45%.
Default:
Min/Max:
Units:
5.0%
0.0/100.0%
0.1%
Custom Firmware Parameters (cont.)
File Group No
.
Parameter Name and Description
See User Manual for symbol descriptions
Values
Re
la
ted