Delta VFD11AMS21AFSHA, User Manual

Page: 231 / 445

Chapter 12 Description of Parameter Settings

MS300 (High Speed Model)
12-06-4

Over-current Stall Prevention during Operation
Factory Setting:
Settings Heavy duty: 0~200 % (100 % corresponds to the
rated current of the drive)
180
 This parameter only works in VF mode.

It is a protection for drive to decrease output frequency automatically when the motor is over-load
abruptly during motor constant operation.
 If the output current exceeds the setting value of Pr. 06-04 when the drive is operating, the drive
will decrease output frequency (according to Pr. 06-05) to prevent the motor from stall. If the
output current is lower than the setting value of Pr. 06-04, the drive will accelerate (according to
Pr. 06-05) again to the setting frequency.
06-04
Over-current stall prevention
level during operation
Output
Frequency
Over-current stall prevention
at constant speed, output
frequency decreases
Over-current stall prevention at constant speed
Time
Current
Pr. 06-04 setting
Pr. 06-04 setting-
rated current of drive x 5%
Decreases by
deceleration time

Accel. / Decel. Time Selection of Stall Prevention at Constant Speed
Factory Setting: 0
Settings 0: By current accel. / decel. time
1: By the 1
st
accel. / decel. time
2: By the 2
nd
accel. / decel. time
3: By the 3
rd
accel. / decel. time
4: By the 4
th
accel. / decel. time
5: By auto accel. / decel.
 It is used to set the accel. / decel. time selection when stall prevention occurs at constant speed.

Over-torque Detection Selection (Motor 1)
Factory Setting: 0
Settings 0: No function
1: Continue operation after Over-torque detection during constant speed
operation
2: Stop after Over-torque detection during constant speed operation
3: Continue operation after Over-torque detection during RUN
4: Stop after Over-torque detection during RUN