Rockwell Automation 21G PowerFlex 750-Series AC Drives Programming Manual User Manual
Page 117
Rockwell Automation Publication 750-PM001J-EN-P - October 2014
117
Drive Port 0 Parameters
Chapter 3
SPEED C
O
NTRO
L
Speed Re
fe
re
nce
592
Selected Spd Ref
Selected Speed Reference
Displays the value of the active speed reference.
Units:
Default:
Min/Max:
Hz
RPM
0.00
–/+P27 [Motor NP Hertz]
–/+P28 [Motor NP RPM]
RO
Real
593
Limited Spd Ref
Limited Speed Reference
Displays the value of the speed reference after the following limits have been applied:
P520 [Max Fwd Speed], P521 [Max Rev Speed], P522 [Min Fwd Speed] and P523 [Min
Rev Speed].
Units:
Default:
Min/Max:
Hz
RPM
0.00
–/+P27 [Motor NP Hertz]
–/+P28 [Motor NP RPM]
RO
Real
594
Ramped Spd Ref
Ramped Speed Reference
Displays the output of the speed reference ramp and S-curve functions, but prior to any
corrections added by slip comp, PI, etc.
Units:
Default:
Min/Max:
Hz
RPM
0.00
–/+P27 [Motor NP Hertz]
–/+P28 [Motor NP RPM]
RO
Real
595
Filtered Spd Ref
Filtered Speed Reference
Displays the output of the filter that is applied by P588 [Spd Ref Filter].
Units:
Default:
Min/Max:
Hz
RPM
0.00
–/+P27 [Motor NP Hertz]
–/+P28 [Motor NP RPM]
RO
Real
596
Speed Rate Ref
Speed Rate Reference
This parameter is shared by both the Inertia Compensation and Speed Compensation
functions. These functions are only available in the Flux Vector selections for P35 [Motor
Ctrl Mode].
A value shared by both the Inertia Compensation and Speed Compensation functions
(active only in FV motor control modes), typically supplied by an external controller that
is also providing a rate limited speed reference. The Speed Rate Reference corresponds
to the derivative with respect to time of the speed reference signal. Units of time are in
seconds.
For example, if the controller provides a 10 second reference ramp, the controller would
also supply a Speed Rate Ref value of 1 pu / 10 sec = 0.1 sec-1 while the reference is
accelerating. When the reference is constant, Speed Rate Ref should be zero.
Units:
Default:
Min/Max:
Hz
RPM
0.00
–/+P27 [Motor NP Hertz]
–/+P28 [Motor NP RPM]
RW Real
597
Final Speed Ref
Final Speed Reference
Displays the speed reference value, after all reference modifications (including ramps),
that is used as a final reference by the speed regulator. In Open Loop, Sensorless Vector
mode, this value represents the anticipated motor operating speed, and may differ
slightly from the output frequency value due to slip compensation.
Units:
Default:
Min/Max:
Hz
RPM
0.00
–/+P27 [Motor NP Hertz]
–/+P28 [Motor NP RPM]
RO
Real
Fi
le
Grou
p
No.
Display Name
Full Name
Description
Values
Re
ad
-W
ri
te
Da
ta
T
ype
Fil
e
Gr
oup
No.
Display Name
Full Name
Description
Values
Re
ad
-Write
Da
ta
T
yp
e
SPEED C
O
NTROL
Speed T
rim
600
604
Trim Ref A Sel
Trim Ref B Sel
Trim Reference A, B Select
Selects a trim source (in Hz or RPM) for Speed Reference A or Speed Reference B,
respectively. For trim in % instead of Hz or RPM, use P608/612 (TrimPct Refn Sel).
Default:
Min/Max:
P601 [Trim Ref A Sel]
P605 [Trim Ref B Stpt]
0 / 159999
RW 32-bit
Integer
601
605
Trim Ref A Stpt
Trim Ref B Stpt
Trim Reference A, B Setpoint
A digital value to be used as a possible trim source for P600 or P604, respectively
Units:
Default:
Min/Max:
Hz
RPM
0.00
–/+P27 [Motor NP Hertz]
–/+P28 [Motor NP RPM]
RW Real