Chapter 5 Parameters_VFD-B Series
Revision 10/2005, BE13, SW V4.08 5-79
Group 7: Motor Parameters
07 - 00
aMotor Rated Current Unit: 1
Settings 30 to 120% Factory Setting: 100
Use the following formula to calculate the percentage value entered in this parameter:
(Motor Current / AC Drive Current) x 100%
with Motor Current=Motor rated current in A on type shield
AC Drive Current=Rated current of AC drive in A (see Pr.00-01)
Pr.07-00 and Pr.07-01 must be set if the drive is programmed to operate in Vector Control mode (Pr.0-09 =
2 or 3). They also must be set if the "Electronic Thermal Overload Relay" (Pr.06-06) or "Slip Compensation"
functions are selected.
07 - 01
aMotor No-load Current Unit: 1
Settings 01 to 90% Factory Setting: 40
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.07-00 (Motor Rated Current).
07 - 02
aTorque Compensation Unit: 0.1
Settings 0.0 to 10.0 Factory Setting: 0.0
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.
07 - 03
aSlip Compensation (Used without PG) Unit: 0.01
Settings 0.00 to 3.00 Factory Setting: 0.00
While driving an asynchronous motor, increasing the load on the AC motor drive will cause an increase in
slip and decrease in speed. This parameter may be used to compensate the slip by increasing the output
frequency. When the output current of the AC motor drive is bigger than the motor no-load current (Pr.07-
01), the AC drive will adjust its output frequency according to this parameter.
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