Rockwell Automation Publication 750-PM001N-EN-P - February 2017 59
Drive Port 0 Parameters Chapter 3
MOTOR CONTROL
Autotune
82 PM AltEnc Offset
Permanent Magnet Motor Alternate Encoder Offset
The amount of offset between the alternate feedback encoder counts, and the rotor flux
center position of the PM motor. A value of 1024 is equal to 360 electrical degrees. This
parameter is updated during the PM Offset test which runs at the first start after a power
cycle/ system reset (P80 [PM Cfg] Bit 0 = 1) and during autotune in PM FV mode. Active
only when Alternate Velocity Feedback is being used during Automatic Tach Switchover
(see P635 [Spd Options Ctrl]).
Default:
Min/Max:
0
0 / 1023
RW 32-bit
Integer
83 PM OfstTst Cur
Permanent Magnet Motor Offset Test Current
Amplitude of the current command in percent of the motor rated current during the PM
Offset Test, which is one of the auto tune tests in PM FV mode.
Units:
Default:
Min/Max:
%
40.00
0.00 / 200.00
RW Real
84 PM OfstTst CRamp
Permanent Magnet Motor Offset Test Current Ramp
Ramp time of the current command during the PM Offset Test in PM FV mode, which is
defined as ramp time to reach the P80 [PM Cfg] current command amplitude.
Units:
Default:
Min/Max:
Secs
3.00
0.00 / 100.00
RW Real
85 PM OfstTst FRamp
Permanent Magnet Motor Offset Test Frequency Ramp
Defines the frequency ramp time of the current command during the PM Offset Test in
PM FV mode, which is defined as ramp time in seconds from 0 to 3 Hz.
Units:
Default:
Min/Max:
Secs
60.00
0.00 / 1000.00
RW Real
86 PM CEMF Voltage
Permanent Magnet Motor Counter Electro Motive Force
Counter electromotive force (CEMF) voltage displayed in line-to-line rms value, which is
normalized to the base motor speed. Updated after the completion of the auto tune in
PM FV mode.
Units:
Default:
Min/Max:
Volt
P25 [Motor NP Volts] x 0.0675
0.00 / P25 [Motor NP Volts] x 1.5
RW Real
87 PM IR Voltage
Permanent Magnet Motor Stator Voltage Drop
Voltage across the stator resistance of the PM motor at the rated motor current displayed
in line-to-line rms value. Updated after the completion of the auto tune in PM FV mode.
Units:
Default:
Min/Max:
Volt
Based on Drive Rating
0.00 / Based on Drive Rating and Voltage
Class
RW Real
88 PM IXq Voltage
Permanent Magnet Motor Q-Axis Stator Inductance Voltage Drop
Voltage across the q-axis stator inductance of the PM motor at the rated motor current
and the rated motor frequency displayed in line-to-line rms value. This parameter is
updated after the completion of the auto tune in PM FV mode.
Units:
Default:
Min/Max:
Volt
P25 [Motor NP Volts] x 0.0435
0.00 / P25 [Motor NP Volts] x 1.5
RW Real
89 PM IXd Voltage
Permanent Magnet Motor D-Axis Stator Inductance Voltage Drop
Voltage across the d-axis stator inductance of the PM motor at the rated motor current
and the rated motor frequency displayed in line-to-line rms value. Updated after the
completion of the auto tune in PM FV mode.
Units:
Default:
Min/Max:
Volt
P25 [Motor NP Volts] x 0.0435
0.00 / P25 [Motor NP Volts] x 1.5
RW Real
91 PM Vqs Reg Kp
Permanent Magnet Motor Vqs Regulator Proportional Gain
Proportional gain of the vqs regulator in PM FV mode. When P80 [PM Cfg]
Bit 1 = 1, the
vqs regulator will be active either when the motor voltage exceeds the voltage limited
by the DC bus voltage or when the motor voltage exceeds the value set by P36
[Maximum Voltage].
Default:
Min/Max:
2.50
0.00 / 1000.00
RW Real
92 PM Vqs Reg Ki
Permanent Magnet Motor Vqs Regulator Integral Gain
Integral gain of the vqs regulator in PM FV mode.
Default:
Min/Max:
0.50
0.00 / 1000.00
RW Real
93 PM Dir Test Cur
Permanent Magnet Motor Direction Test Current
Amount of current commanded during the direction test when P35 [Motor Ctrl Mode]
option 6 “PM FV” is selected. When the Start-Up feature is used, this value is
automatically set to 10% of the motor rated current.
Units:
Default:
Min/Max:
Amps
P26 [Motor NP Amps]/10
0.00 / P26 [Motor NP Amps]
RW Real
File
Group
No. Display Name
Full Name
Description
Values
Read-Write
Data Type
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