2-52 Parameter
Descriptions
7000-TD002A-EN-P – September 2007
Flux Feedback from Voltage Model [FlxFbk VoltModel]
Linear Number:
342
Minimum Value:
0.000 pu
Maximum Value: 2.000 pu
Access Level:
Service
Read/Write:
Read
Only
This parameter specifies the measured motor flux feedback from the voltage model. The voltage model
uses measured motor voltage and current along with known motor parameters to calculate the rotor flux.
This is used above 3 Hz for flux feedback.
Flux Feedback From Current Model [FlxFbk CurModel]
Linear Number:
341
Minimum Value:
0.000 pu
Maximum Value: 2.000 pu
Access Level:
Service
Read/Write:
Read
Only
This parameter specifies the estimated motor flux from the current feedback. The drive uses an indirect
method of calculating rotor flux. This is used in the lower speed ranges (0-3 Hz) for the flux feedback.
Magnetizing Inductance Predicted [Lm Predicted]
Linear Number:
701
Minimum Value:
0.00 pu
Maximum Value: 15.00 pu
Access Level:
Service
Read/Write:
Read
Only
This parameter represents the expected Magnetizing Inductance for the given load and flux operating
conditions. This parameter comes from an extrapolation of the Magnetizing Inductance parameters for
different loads and speeds. But for most applications, this parameter will simply be the Magnetizing
Inductance value from the Autotune results.
Magnetizing Inductance Measured [Lm Measured]
Linear Number:
134
Minimum Value:
0.00 pu
Maximum Value: 15.00 pu
Access Level:
Service
Read/Write:
Read
Only
This parameter represents the motor magnetizing inductance measured by the drive control. It is obtained
by dividing the measured flux feedback by the magnetizing current. This parameter is continuously
calculated when the drive is running.
Magnetizing Inductance Rated [Lm Rated]
Linear Number:
131
Default Value:
3.50 pu
Minimum Value:
1.00 pu
Maximum Value: 15.00 pu
Access Level:
Advanced
Read/Write:
Read/Write
This parameter specifies the per unit motor magnetizing inductance. Typical values of this parameter are
in the range 2.0 pu to 6.0 pu for induction motors and 1.0 pu to 2.0 pu for synchronous motors.
Magnetizing inductance can change significantly with changes in load and flux. This parameter
represents the value at rated flux and rated load. This parameter can be set manually or by auto-tuning.
Summary of Contents for PowerFlex 7000
Page 1: ...PowerFlex 7000 Medium Voltage AC Drive TECHNICAL DATA Firmware Version 7 xxx ...
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Page 4: ...ii Table of Contents 7000 TD002A EN P September 2007 ...
Page 44: ...1 40 Functional Description 7000 TD002A EN P September 2007 ...
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Page 346: ...3 58 Troubleshooting 7000 TD002A EN P September 2007 ...
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