91
• Preventing Motor from Stalling (Current Limit)
This function automatically limits the output current in response to load changes by
adjusting the output frequency to prevent motor stalling.
• Stall prevention (current limit) level during acceleration (n56)
Sets the stall prevention (current limit) level during acceleration in units of 1%
(Inverter rated current = 100%).
Factory setting: 170%
A setting of 200% disables the stall prevention (current limit) during acceleration.
During acceleration, if the output current exceeds the value set for n56, acceleration
stops and frequency is maintained. When the output current goes down to the value set
for n56, acceleration continues.
In the constant horsepower area [output frequency > max. voltage output frequency
(n11)], following equation automatically decreases the stall prevention (current limit)
level during acceleration.
* Stops the acceleration to prevent the motor
from stalling.
† Release width (hysteresis) of stall prevention
during accel is approx. 5% of inverter rated
current.
*
*
*Note: The lower limit of the stall prevention level is 40% of the level set in n56.
To Next Page
Loading...
