Revision 2016/03, 6ELE, V1.14
4-59
Group 6: Protection Parameters
06.00
Over-Voltage Stall Prevention Unit: 0.1
Settings 115V/230V series 330.0 to 410.0V Factory Setting: 390.0
460V series 660.0 to 820.0V Factory Setting: 780.0
0 Disable Over-voltage Stall Prevention (with brake unit or brake
resistor)
During deceleration, the DC bus voltage may exceed its Maximum Allowable Value due to motor regeneration.
When this function is enabled, the AC motor drive will not decelerate further and keep the output frequency
constant until the voltage drops below the preset value again.
Over-Voltage Stall Prevention must be disabled (Pr.06.00=0) when a brake unit or brake resistor is used.
With moderate inertia load, over-voltage stall prevention will not occur and the real deceleration time will be
equal to the setting of deceleration time. The AC drive will automatically extend the deceleration time with high
inertia loads. If the deceleration time is critical for the application, a brake resistor or brake unit should be used.
over-voltage
detection level
output
frequency
time
Deceleration characteristic
when Over-Voltage Stall
Prevention enabled
time
previous deceleration time
actual time to decelerate to stop when over-voltage
stall prevention is enabled
06.01
Over-Current Stall Prevention during Acceleration
Unit: 1
Settings 20 to 250% Factory Setting: 170
0: disable
A setting of 100% is equal to the Rated Output Current of the drive.
During acceleration, the AC drive output current may increase abruptly and exceed the value specified by
Pr.06.01 due to rapid acceleration or excessive load on the motor. When this function is enabled, the AC drive
will stop accelerating and keep the output frequency constant until the current drops below the maximum value.