Revision 2016/03, 6ELE, V1.14
4-63
Group 7: Motor Parameters
07.00
Motor Rated Current Unit: 1
Settings 30% FLA to 120% FLA Factory Setting: FLA
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)
07.01
Motor No-load Current Unit: 1
Settings 0% FLA to 90% FLA Factory Setting: 0.4*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.07.00 (Motor Rated Current).
07.02
Torque 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.
Too high torque compensation can overheat the motor.
07.03
Slip Compensation Gain Unit: 0.01
Settings 0.00 to 10.00 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.
07.04
Motor Parameters Auto Tuning
Settings 0: Disable
1: Auto-tuning R1(Motor doesn’t run)
2: Auto-tuning R1 + No-load current(with running
motor)
Factory Setting: 0
If setting 1 or 2 are chosen, the auto-tuning on motor will be performed when the motor drive receives the
command. If setting 1 is chosen, only R1 value will be measured. Manually set up Pr07.01 to measure no-
load current. Before choosing setting 2, discharge manually the motor, then the setting at Pr07.01 and
Pr07.05 will be used for auto-tuning.
Motor’s auto-tuning, step by step:
1. Make sure all the parameters are at factory setting and the motor is wired correctly.
2. Discharge the motor before setting up parameters. Make sure that motor has only a single shaft, not
attached to any belt or speed reducer.
3. Enter the correct value in the following parameters Pr01.01 Maximum Voltage Frequency(Fbase),
Pr01.02 Maximum Output Voltage (Vmax), Pr07.00 Motor Rated Current, Pr07.06 Motor Rated Slip (Motor
0).
4. Set Pr07.04 =2 and press RUN command key on the keypad, then the motor’s auto-tuning will begin
(motor is rotating by now).
5. When auto-tuning is done, verify if Pr07.01 and Pr07.05 have automatically entered measured data. If
measured data are not entered, set Pr07.04 =2 again and press RUN.
6. If Pr07.01 and Pr07.05 have automatically entered measured data, setup Pr00.10=1 Vector Control. And
then adjust necessary settings on other parameters.
Related parameters: Pr01.01 Maximum Voltage Frequency; Pr01.02 Maximum Output Voltage (Vmax);
Pr07.00 Motor Rated Current; Pr07.01 Motor No-Load Current; Pr07.05 Motor Line-to Line
Resistance R1; Pr07.06 Motor Rated Slip.
.
Vector control is not suitable for the following situations: When multiple motors in parallel operation and when the
difference in house power between motor and motor drive is too big.
07.05
Motor Line-to-line Resistance R1 (Motor 0)
Settings 0~65535mΩ Factory Setting: 0
This parameter is automatically setup after motor’s auto-tuning but it can also be manually entered
the known parameter of the motor. This is a line-to-line resistance. No matter how the motor is wired,
this resistance is the measured value of any two motor wire-outlets.
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