4-171
Group 08 Protection Parameters
08- 00
Stall Prevention Function
Range
【xxx0b】:
Stall prevention is enabled in acceleration.
【xxx1b】: Stall prevention is disabled in acceleration.
【xx0xb】: Stall prevention is enabled in deceleration.
【xx1xb】:
Stall prevention is disabled in deceleration.
【x0xxb】: Stall prevention is enabled in operation.
【x1xxb】:
Stall prevention is disabled in operation.
【0xxxb】: Stall prevention in operation decelerates based on deceleration time 1
【1xxxb】: Stall prevention in operation decelerates based on deceleration time 2
08- 01
Stall Prevention Level in Acceleration
Range
【
20~200】%
08- 02
Stall Prevention Level in Deceleration
Range
【
330~410】V : 200V
【
660~820】V : 400V
08- 03
Stall Prevention Level in Operation
Range
【
30~200】%
08- 21
Limit of Stall Prevention in Acc over Base Speed
Range
【
1~100】%
08- 22
Stall Prevention Detection Time in Operation
Range
【
2~100】msec
Note: Stall prevention function only can be set in V/F control mode.
Stall prevention during acceleration (08-00=xxx0b)
(1) Prevents the inverter from faulting (Overcurrent, Motor overload, Inverter overload) when accelerating
with heavy loads.
(2) When the inverter output current reaches the level set in parameter 08-01 minus 15% the acceleration
rate starts to decrease. When the inverter output current reaches the level set in parameter 08-01 the
motor stops accelerating.
(3) Reduce stall prevention level during acceleration (08-01) in case the motor stalls (when the motor
power is smaller than the inverter rating.
Stall prevention during acceleration (08-00=xxx0b)
Prevents the inverter from faulting (Overcurrent, Motor overload, Inverter overload) when accelerating with
heavy loads.
When the inverter output current reaches the level set in parameter 08-01 minus 15% the acceleration rate
starts to decrease. When the inverter output current reaches the level set in parameter 08-01 the motor
stops accelerating. Refer to Fig.4.4.57 for more information.
Notes:
- Reduce stall prevention level during acceleration (08-01) in case the motor stalls (when the motor power
is smaller than the inverter rating.
- The inverter rated output current should be set to 100%.
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