Operating Instructions

Descriptions of Parameter Settings
Descriptions of Parameter Settings
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The drive decelerates to 0 Hz. The DC bus voltage continues to decrease until the voltage is lower than the Lv
level, and then the drive disconnects the soft start relay. The soft start relay closes again after the power recovers
and the DC bus voltage is higher than the Lv return level. When the DC bus voltage is higher than the dEb return
level, the drive maintains the frequency for three seconds and starts to accelerate linearly. The “dEb” warning on
the keypad is automatically cleared.
Fig. 90:
Pr.
Explanation
Settings
Default
07-15
Dwell time at acceleration
0.00 to 600.00 sec.
0.00
07-17
Dwell time at deceleration
0.00 to 600.00 sec.
0.00
07-16
Dwell frequency at acceleration
0.00 to 599.00 Hz
0.00
07-18
Dwell frequency at deceleration
0.00 to 599.00 Hz
0.00
● In heavy load situations, the Dwell temporarily maintains stable output frequency. Use this parameter for
cranes, elevators, and so on.
● For heavy load applications, use Pr.07-15–Pr.07-18 to avoid OV or OC protection.
Fig. 91: