Mitsubishi FREQROL-E700, Manual

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3.5.4 Pr. 0 Torque boost
This parameter is used to correct voltage drops in low-frequency ranges and improve decreases in motor torque
during low speeds.
• Motor torque during low-frequency ranges can be adjusted in accordance with load and can be increased during startup.
Pr. Name Initial value Setting range Description
0 Torque boost
0.1K to 0.75K 6%
0 to 30% Set the output voltage at 0Hz as %.
1.5K to 3.7K 4%
5.5K, 7.5K 3%
11K, 15K 2%
1. Starting torque adjustment
● On the assumption that Pr. 19 Base frequency
voltage is 100%, set the output voltage at 0Hz in %
to Pr. 0.
● Adjust the parameter little by little (about 0.5%),
and check the motor status each time. If the setting
is too large, the motor will overheat. The guideline
is about 10% at the greatest.
Output voltage
Pr.0 Setting range
Base
frequency
0
100%
Output frequency (Hz)
Operation example
1
Screen at power-ON
The monitor display appears.
2
Changing the operation mode
Press to choose the PU operation mode. The [PU] indicator turns on.
3
Parameter setting mode
Press to choose the parameter setting mode.
4
Selecting the parameter number
Turn until (Pr. 0) is selected.
5
Reading settings
Press to read the present setting. " " (6.0% (initial value)) appears.
6
Changing the setting
Turn to change the setting to " " (3.0%).
7
Parameter settings
Press to finalize the setting.
The parameter number and setting flashes.
* Configure parameter settings in accordance with your environment.