Yaskawa iQpump Controller Programming Manual Manuel d'utilisateur télécharger pdf (Page 131)

YASKAWA TM.iQp.07 iQpump Controller Programming Manual 131

n1 Hunting Prevention

◆ n1-01 Hunting Prevention Selection

◆ n1-02 Hunting Prevention Gain Setting

Setting Range: 0.00 ~ 2.50

Factory Default: 1.00

Sometimes when the iQpump drive is lightly loaded and the carrier frequency is high, the drive’s output current may vary, or hunt. This

varying current can cause the motor to vibrate. The drive’s Hunting Prevention function can stabilize the motor’s magnetizing current by

adjusting the output voltage (n1-01 = “1: Enabled”). The Hunting Prevention function can eliminate the vibration but at the cost of the

iQpump drive response.

Parameter n1-02 can adjust the gain of the Hunting Prevention function if it is enabled by n1-01. Normally there is no need to adjust

n1-02 from the factory default setting. Make adjustments in the following cases:

• If vibration occurs with a light load, increase the setting of n1-02.

• If the motor stalls, reduce the setting of n1-02.

An overly large Hunting Prevention Gain (n1-02) may cause the motor to stall.

Setting Description

0Disabled

1 Enabled (

factory default)

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Yaskawa iQpump Controller Programming Manual Manuel d'utilisateur Page 131