When you use V/f Control, do not use C3-01 [Slip Compensation Gain].

Table 1. Adjustment of Drive Control (V/f Control)

Adjustment Description

Parameter Number

Possible Solutions

Default

Recommended Setting

Prevent hunting and oscillation at middle-range speeds (10 Hz to 40 Hz)

n1-02 [Hunting Prevention Gain Setting]

  • If the torque is not sufficient with heavy loads, decrease the setting.

  • If there is hunting or oscillation with light loads, increase the setting. Set n1-01 = 1 [Hunting Prevention Selection = Enabled].

1.00

0.50 - 2.00

  • Increasing motor excitation sound

  • Hunting and oscillation suppression at low speeds and middle-range speeds

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 speeds or middle-range speeds, decrease the setting value.

1

1 - F

  • Increase torque at low speeds (10 Hz or lower)

  • Prevent hunting and oscillation

C4-01 [Torque Compensation Gain]

  • If the torque is not sufficient at low speeds, increase the setting value.

  • If there is hunting or oscillation with light loads, decrease the setting value.

1.00

0.50 - 1.50

  • Increase torque at low speeds

  • Prevent shock during start up

E1-08 [Mid Point A Voltage]

  • If the torque is not sufficient at low speeds, increase the setting value.

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

15.0 V 2 3

13.0 V to 16.0 V3

E1-10 [Minimum Output Voltage]

9.0 V23

7.0 V to 10.0 V3

 
1

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

2

The default setting changes when the settings for A1-02 [Control Method Selection] and E1-03 [V/f Pattern Selection] change.

3

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