Rockwell Automation Publication MOTION-RM003I-EN-P - February 2018 397
PM Motor Flux Saturation
Usage Access Data Type Default Min Max Semantics of Values
Optional
(SPM Only)
Set REAL [8]
[100, 100,
100, 100,
100, 100,
100, 100]
DB
0 100 % Nominal Inductance
The PM Motor Flux Saturation attribute is an array of floating point values that
specify the amount of flux saturation in the motor as a function of current. The
units for the nominal inductance values are percent, such that a value of 100%
means no saturation, and 90% means the inductance is 90% of its value at zero
current.
The first array entry specifies the flux saturation value at 12.5% of the Peak
Current Rating; the second entry specifies the value at 25%, and so on up to the
last entry, which specifies the value at 100% of the Peak Current Rating. (At zero
current, the motor is assumed to have no saturation, for example, an implied value
of 100%.)
PM Motor Lq Inductance
Usage Access Data Type Default Min Max Semantics of Values
Required
(IPM Only)
Set/SSV* REAL 0
DB
0
Henries
* Indicates the attribute cannot be set while the drive power stru
cture is enabled (Power Structure Enable bit in CIP Axis Status
is true).
The PM Motor Lq Inductance attribute is a floating point value that specifies the
phase-to-neutral, q-axis, inductance of an interior permanent magnet motor.
PM Motor Ld Inductance
Usage Access Data Type Default Min Max Semantics of Values
Required
(IPM Only)
Set/SSV* REAL 0
DB
0
Henries
* Indicates the attribute cannot be set while the drive power structure is enabled (Power Structure Enable bit in CIP Axis Status
is true).
The PM Motor Ld Inductance attribute is a floating point value that specifies the
phase-to-neutral, d-axis, inductance of an interior permanent magnet motor.
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