Rockwell Automation 21G PowerFlex 750-Series AC Drives Programming Manual - Manual (Page 119)

Rockwell Automation Publication 750-PM001J-EN-P - October 2014 119
Drive Port 0 Parameters Chapter 3
Fil
e
Gr
ou
p
No. Display Name
Full Name
Description Values
Re
ad
-Write
Da
ta T
ype
SPEED C
O
NTROL
Sl
ip/Droop C
omp
620 Droop RPM at FLA
Droop Revolutions Per Minute at Full Load Amps
Selects amount of droop that the speed reference is reduced when at full load torque.
Zero disables the droop function. Units:
Default:
Min/Max: RPM
0.00
0.00 / 900.00 RW Real
621 Slip RPM at FLA
Slip Revolutions Per Minute at Full Load Amps
For open loop modes, this parameter sets the amount of slip (in rpm) that the motor is
expected to experience at full load. A setting of zero disables slip compensation (not
used in closed loop modes with encoder feedback). If the value of P70 [Autotune] is set
to “Calculate”, this value (in addition to others) is automatically calculated, and cannot
be manually adjusted. Units:
Default:
Min/Max:
RPM
(P27 [Motor NP Hz] x 120) / (P31 [Motor
Poles] – P28 [Motor NP RPM])
0.00 / 1200.00 RW Real
622 Slip Comp BW
Slip Compensation Bandwidth
Adjusts the bandwidth of a low pass filter used for slip compensation. The response time
of slip compensation will vary inversely with the setting of this filter. Units:
Default:
Min/Max: R/S
10.00
1.00 / 50.00 RW Real
623 VHzSV SpdTrimReg
Volts per Hertz Sensorless Vector Speed Trim Regulator
Displays the amount of trim that the slip compensation function dynamically adds
(based on load) to final speed reference for improved open loop speed control. Not used
in Flux Vector (FV) modes. Units:
Default:
Min/Max:
Hz
RPM
0.00
–/+P27 [Motor NP Hertz] x 8
–/+P28 [Motor NP RPM] x 8 RO Real