A438, A439, A437 – Rockwell Automation 22F PowerFlex 4M User Manual FRN 1.xx - 2.xx User Manual
Page 65: Advanced program group, Continued)
Programming and Parameters
3-25
PowerFlex 4M Adjustable Frequency Drive FRN 1.xx - 2.xx User Manual
Publication 22F-UM001D-EN-E
Advanced Program Group
(continued)
A436 [Compensation]
Enables/disables correction options that may improve problems with motor instability.
Options
0 “Disabled”
1 “Electrical” (Default)
Some drive/motor combinations have inherent instabilities
which are exhibited as non-sinusodial motor currents. This
setting attempts to correct this condition.
2 “Mechanical”
Some motor/load combinations have mechanical resonances
which can be excited by the drive current regulator. This
setting slows down the current regulator response and
attempts to correct this condition.
3 “Both”
A437 [Slip Hertz @ FLA]
Related Parameter(s):
Compensates for the inherent slip in an induction motor. This frequency is added to the commanded
output frequency based on motor current.
Values
Default
2.0 Hz
Min/Max:
0.0/ 10.0 Hz
Display:
0.1 Hz
A438 [Process Time Lo]
,
Scales the time value when the drive is running at
[Minimum Freq]. When set to a value other
[Process Display] indicates the duration of the process.
Values
Default
0.00
Min/Max:
0.00/ 99.99
Display:
0.01
A439 [Process Time Hi]
,
Scales the time value when the drive is running at
[Maximum Freq]. When set to a value other
[Process Display] indicates the duration of the process.
Values
Default
0.00
Min/Max:
0.00/ 99.99
Display:
0.01