Chapter 4 Parameters
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5.
After executing, please check if there are values filled in Pr.07.01 and Pr.07.05. If not,
please press RUN key after setting Pr.07.04 again.
6.
Then you can set Pr.00.10 to 1 and set other parameters according to your application
requirement.
Related parameters: Pr.01.01(Maximum Voltage Frequency (Fbase) (Motor 0)),
Pr.01.02(Maximum Output Voltage (Vmax) (Motor 0)), Pr.07.00(Motor Rated Current (Motor
0)), Pr.07.01(Motor No-Load Current (Motor 0)), Pr.07.05(Motor Line-to-line Resistance R1
(Motor 0)) and Pr.07.06(Motor Rated Slip (Motor 0))
NOTE
1. In vector control mode it is not recommended to have motors run in parallel.
2. It is not recommended to use vector control mode if motor rated power exceeds the rated power of
the AC motor drive.
07.05
Motor Line-to-line Resistance R1 (Motor 0)
Unit: m
Settings
0 to 65535 m
Factory Setting: 0
The motor auto tune procedure will set this parameter. The user may also set this parameter
without using Pr.07.04.
07.06
Motor Rated Slip (Motor 0)
Unit: Hz
Settings
0.00 to 20.00Hz
Factory Setting: 3.00
It can be used to set the motor rated slip. Users need to input the actual rated rpm shown on
the nameplate of the motor.
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.01.01 base frequency) – (rated rpm x motor pole/120)
Example: Assume that the rated frequency of the motor is 60Hz with 4 poles and the rated rpm
is 1650rpm. The rated slip calculated by the formula should be 60Hz-(1650X4/120)=5Hz.
This parameter has relation with Pr.07.03(Slip Compensation (Used without PG) (Motor 0)). To
get the best slip compensation effect, it needs to input the correct setting. The incorrect setting
may cause the invalid function and even damage the motor and drive.
Related parameter: Pr.07.03(Slip Compensation (Used without PG) (Motor 0))
07.07
Slip Compensation Limit
Unit: %
Settings
0 to 250%
Factory Setting: 200
This parameter sets the upper limit of the compensation frequency (the percentage of
Pr.07.06).
Example: when Pr.07.06=5Hz and Pr.07.07=150%, the upper limit of the compensation
frequency is 7.5Hz. Therefore, for a 50Hz motor, the max. output is 57.5Hz.
If the motor speed is lower than the target speed and the speed isn’t changed after adjusting
Pr.07.03 setting, it may reach the upper limit of the compensation frequency and need to
increase Pr.07.07 setting.
Related parameters: Pr.07.03(Slip Compensation (Used without PG) (Motor 0)) and
Pr.07.06(Motor Rated Slip (Motor 0))
