Do not adjust parameter C4-01 [Torque Compensation Gain]. Keep this parameter at its default setting.

If you cannot get speed accuracy during regeneration, set C3-04 = 1 [Slip Compensation at Regen = Enabled Above 6Hz]. If you cannot get speed accuracy at high speeds, set C3-05 = 1 [Output Voltage Limit Selection = Enabled].

Table 1. Adjustment of Drive Control (Open Loop Vector Control Method)

Adjustment description

Parameter Number

Possible Solutions

Default

Recommended Setting

  • Torque, increase speed response

  • Prevent hunting and oscillation at middle speed range (10 Hz to 40 Hz)

n2-01 [Automatic Freq Regulator Gain]

  • If torque and speed response are slow, decrease the setting value.

  • If there is hunting or oscillation, increase the setting value.

1.00

0.50 - 2.00

  • Prevent hunting or oscillation at high speed range (120 Hz or more)

C4-25 [High-Speed Voltage Compensation]

Adjust the setting value.

1 [Enabled]

0 [Disabled]

  • Torque, increase speed response

  • Prevent hunting and oscillation

C4-02 [Torque Compensation Delay Time] 1

  • If torque and speed response are slow, decrease the setting value.

  • If there is hunting or oscillation, increase the setting value.

20 ms

20 ms to 100 ms

  • Increase speed response

  • Increase speed stability

C3-02 [Slip Compensation Delay Time]

  • When speed response is slow, decrease the setting value.

  • If speed is not stable, increase the setting value.

200 ms

100 ms to 500 ms

  • Improve speed accuracy

C3-01 [Slip Compensation Gain]

  • If speed is too slow, increase the setting value.

  • If speed is too fast, decrease the setting value.

1.0

0.5 - 1.5

  • Increasing motor excitation sound

  • Prevent hunting and oscillation at low speed range (10 Hz to or lower)

C6-02 [Carrier Frequency Selection]

  • If there is a loud motor excitation sound, increase the setting value.

  • If there is hunting or oscillation at low speed range, decrease the setting value.

2

1 - F

  • Increase torque and speed response at low speed range

  • Prevent shock during start up

E1-08 [Mid Point A Voltage]

  • If the torque and speed response are slow, increase the setting value.

  • If there is a large shock during start up, decrease the setting value.

11.0 V 3

12.0 V to 13.0 V 3

E1-10 [Minimum Output Voltage]

2.0 V 3

2.0 V to 3.0 V 3
 
1

If the value for C4-02 [Torque Compensation Delay Time] is high, the current can increase during start up. Adjust and check the current during start up.

2

The default setting changes when the settings for C6-01 [Normal / Heavy Duty Selection] and o2-04 [Drive Model (KVA) Selection] change.

3

This is the value for 200 V class drives. Multiply the voltage by 2 for 400 V class drives.