Mitsubishi Electric 800 Series Instruction Manual page 124

2.
If it cannot be adjusted well, change the Pr.825 setting, and perform step 1 again.
Set Pr.824 lower and Pr.825 longer. First, lower Pr.824 and then check of there is still any abnormal vibration, noise or
current from the motor. If it still requires improvement, make Pr.825 longer.
Lower the setting by 10% each time and set a value that is approximately 80% to 90% of the setting
Pr.824 immediately before the abnormal noise or current improves.
If set too low, current ripple is produced and produces a sound from the motor that synchronizes with it.
Lengthen the current setting by doubling it each time and set a value that is approximately 80% to 90% of
Pr.825 the setting value, immediately before abnormal noise or current is improved.
If set too long, current ripple is produced and produces a sound from the motor that synchronizes with it.
Adjustment method
6. Torque control
6.5 Torque control gain adjustment
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