AC70 VC CONTROL FREQUENCY INVERTER MANUAL
FUNCTION PARAMETER DETAILED SPECIFICATION
86
E-51
Stall protecting current limit
value
Range:100%-250% Default:160G/120P
It is used to define the ratio of stall protection current limit to rated current motor.
G type default setting: 160%
P type default setting: 120%
Stalling protecting current limit function means that inverter will limit load current automatically with in time
monitoring during the acceleration, make it lower than the limit setting, (Stops acceleration or lower the output
frequency to achieve the value of output current controlling), to protect big current occurs result in fault alarm trip.
This function is suitable for application where has big inertia or load fluctuates severe particularly.
This parameters datum line is rated current of inverter. It will extend acceleration time longer. It means the current
limit function is activated if the frequency can’t accelerate to set value or frequency given, but fluctuates in the fixed
frequency range. Please reduce the load or adjust the some relevant parameters.
E-52
Stall protecting DC bus
voltage threshold
Range:105%-160% Default:138%
This parameter is defined as the ratio of the stall protection DC bus voltage threshold to rated DC bus voltage of
frequency inverter.
Rated inverter DC bus voltage value=Rated input voltage of inverter×1.414
It defines the over overvoltage stall protecting threshold during the deceleration time. While the DC side pumping
voltage cause by decelerating exceeds this parameter settings, the inverter will auto-prolong the deceleration time.
E-53
Dynamic braking and
decelerating over voltage
suppression threshold voltage
Range: 105%-160%
Default: 130%
E-54
Ratio of dynamic braking
Range: 0%-100%
Default: 100%
Decelerating overvoltage suppression threshold voltage:
This value is enabled while
[E-49]
set to 1
Dynamic braking over voltage threshold voltage:
The dynamic braking will be activate when the DC bus voltage
rise over than rated voltage of inverter
[E-53]
setting. The voltage of dynamic braking stop is lower 20V than
[E-53]
setting, please make this setting cautiously.
This function is valid for inverter which built in braking accessory only, AC70 series 22G/30 and 30G/37 both
inverters have braking accessory option, standard built in braking accessory through 15G/18P inverter. Please
