EasyDrive CV3100 Series Instruction Manual page 125

CV3100 series and MINI series high performance general purpose inverter instruction manual
Action time
t3
t2
t1
0
Diagram 6-30Curve for overload stall prevention of motor
The motor prevention factor is decided by following formula:
Motor overload stall prevention factor = Allowable max load current/inverter
rated output current × 100%
Generally, allowable max load current is the motor rated current.
Low voltage
P9.01
prevention level
Setting range
This parameter defines the allowable low voltage of DC bus when normal working of
inverter.
Note：
Excessively low grid voltage will cause reduction of motor torque output. For constant
power load or constant torque load, over low gird voltage can bigger input and output
current of inverter, accordingly reducing the running reliability of inverter. So the
inverter needs to be devaluated when it works under low grid voltage for long time.
Over voltage
P9.02
prevention level
Setting range
This parameter defines the threshold of voltage stall prevention during motor
deceleration. If the inverter DC bus voltage feedback exceeds the value specified by
80% 100%
100% 120% 150% 200%
Factory setting
360V—480V (380V type) 220V-240V (220V type)
Factory setting
660—760V (380V type)
6-57
Motor overload
Prevention factor
Motor currnet
400V（380V type）
700V（380Vtype）
330-380V (220V type)