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CIP Axis Attributes
Chapter 4
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 structure 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.