Yaskawa iQpump Controller Programming Manual Manuel d'utilisateur télécharger pdf (Page 121)

YASKAWA TM.iQp.07 iQpump Controller Programming Manual 121

◆ L3-05 Stall Prevention Selection During Running

◆ L3-06 Stall Prevention Level During Running

Setting Range: 30 ~ 200% of the iQpump drive rated output current

Factory Default: 120% of the iQpump drive rated output current

The Stall Prevention During Running function will attempt to avoid an iQpump drive OC fault occurrence while the iQpump drive is

operating at a constant speed. If L3-05 = “0: Disabled,” the iQpump drive may fault if the load increases sufficiently to cause the output

current to reach the OC fault level (180% of the iQpump drive rated output current).

If L3-05 = “1: General Purpose,” the iQpump drive is outputting a constant speed, and the drive’s output current level exceeds the level set

by parameter L3-06 for more than 100 ms the iQpump drive will begin to decelerate at the rate specified by parameter C1-02. The

iQpump drive will continue to decelerate until the output current level drops below the L3-06 level (less a 2% hysteresis). Once the output

current drops below the L3-06 – 2% level the iQpump drive will begin to accelerate at the currently active acceleration rate (either C1-01

or C1-03).

If L3-05 = “2: Decel Time 2,” the iQpump drive will function as described above except C1-04 will be used instead of C1-02 as the

deceleration rate used when the output current exceeds L3-06 for more than 100 ms.

The following Figure 103. demonstrates acceleration when L3-05≠0.

Figure 1.99

Figure 103. Time Chart for Stall Prevention Level During Running

The L3-06 parameter is set as a percentage of the iQpump drive rated output current. If the iQpump drive still faults when L3-05≠0, then

either lower the L3-06 or adjust the C1-02 or C1-04 settings for a quicker deceleration.

Setting Description

0Disabled

1 Decel Time 1 (factory default)

2 Decel Time 2

L3-06

Output

Fre

uenc

Output

Current

a - Decel time

C1-02 or C1-04.

b – Active accel time

a - Decel time

C1-02 or C1-04

b - Active Accel time

TIME

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Yaskawa iQpump Controller Programming Manual Manuel d'utilisateur Page 121