Delta VFD11AMS21AFSHA, User Manual

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Chapter 12 Description of Parameter Settings

MS300 (High Speed Model)
12-07-8

Situation 5: Pr. 07-13 = 2 and power will recover after DC-BUS voltage is lower than Lv level.
The drive will decelerate to 0 Hz. The DC-BUS voltage will continue to decrease until the voltage is
lower than Lv level, then the drive will disconnect soft start relay. The soft start relay will close again
after the power recovers and DC-BUS voltage is higher than Lv return level. When the DC-BUS
voltage is higher than dEb return level, the drive will maintain the frequency for 3 seconds and
restart to linear accelerate, the dEb warning on the keypad will be cleared automatically.
L v r e tu r n l e ve l
d E b r e tu r n l e ve l
dE b r e tu r n ti me
A u to d e ce l e r a ti o n
L i n e a r a cce l e r a ti o n
3 s e c .
MO = 1 0
L v wa r n i n g
d E b a cti va te d l e ve l
0 Hz
DC B US vo l ta g e
L v l e ve l
S o ft sta r t r e l a y a t
p o we r si d e
O u tp u t fr e q u e n cy
d E b a cti va te d

Dwell Time at Accel.

Dwell Time at Decel.
Factory Setting: 0.00
Settings 0.00~600.00 sec.

Dwell Frequency at Accel.

Dwell Frequency at Decel.
Factory Setting: 0.0
Settings 0.0~1500.0 Hz

In heavy load situation, Dwell can maintain stable output frequency temporarily. It can be applied
to crane, elevators and so on.

When the load is heavier, use Pr. 07-15 ~ Pr. 07-18 to avoid the protection of OV or OC.
Frequency
Time
Dwell at accel./decel.
07-16
Dwell
Frequency
at Accel.
07-15
Dwell Time
at Accel.
07-17
Dwell Time
at Decel.
07-18
Dwell
Frequency
at Decel.