Chapter 5 Parameters|VFD-M-D Series
Revision Jan. 2007, MDE2, SW V1.05 5-33
2 - 02
Motor No-load Current
Unit: 0.1
Settings 0%*FLA to motor rated current Factory Setting: 40%*FLA
The rated current of the AC drive is regarded as 100%. The setting of the Motor no-load
current will affect the slip compensation.
The setting value must be less than Pr.2-00 (Motor Rated Current).
2 - 03 Torque Compensation Unit: 0.1
Settings 0.0 to 10.0 Factory Setting: 1.0
This parameter may be set so that the AC drive will increase its voltage output to obtain a
higher torque. Only to be used for V/f control mode.
Too high torque compensation can overheat the motor.
2 - 04 Number of Motor Poles Unit: 2
Settings 02 to 10 Factory Setting: 04
This parameter sets the number of motor poles (must be an even number).
2 - 05 Motor Line-to-line Resistance R1 Unit: 0.01
Settings
0.00 to 99.99 Ω
Factory Setting: 0.00
The motor auto tune procedure will set this parameter. The user may also set this parameter
without using Pr.2-05.
2 - 06 Motor Rated Slip Unit: 0.01
Settings 0.00 to 20.00Hz Factory Setting: 3.00
Refer to the rated rpm and the number of poles on the nameplate of the motor and use the following
equation to calculate the rated slip.
Rated Slip (Hz) = F
base
(Pr.1-01 base frequency) - (rated rpm x motor pole/120)
2 - 07 Slip Compensation Limit Unit: 1
Settings 00 to 250% Factory Setting: 200
This parameter sets the upper limit of the compensation frequency (the percentage of Pr.2-06).
Example: when Pr.2-06=5Hz and Pr.2-07=150%, the upper limit of the compensation
frequency is 7.5Hz. Therefore, for a 50Hz motor, the max. output is 57.5Hz.
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