Alpha 6000 User Manual page 165

Chapter6 Troubleshooting
Fault Name of
display protection
Over current
OC2
in Dec process
Over current
in
OC3
constant-speed
Operation
Over Voltage
Ou1 in acceleration
process
Over voltage
in
Ou2
deceleration
process
164
Possible reasons of fault
●Too short decelerating
time
●Inertia torque of the
load is big.
●Too low inverter's
power
●Output load of the
inverter is short
circuited
●Abnormity Load
●Too short accelerating/
decelerating time setting
●Low voltage of power
supply
●Too low inverter's
power
●Output load of the
inverter is short
circuited
●Abnormity Input
voltage
●Too short accelerating
time setting
●Stall point of
overvoltage is too low
●Abnormity input
voltage
●Too short decelerating
time setting
●Inertia torque of the
load is big
●Stall point of
overvoltage is too low
Actions
●Increase decelerate time
●Add appropriate braking
component
●Select a high-power
inverter
●Check resistance of the
motor's winding; check
insulation of the motor
●Check the load
●Add accelerate/decelerate
time properly
●Check input power supply
●Select the inverter with
higher power
●Check resistance of the
motor's winding; check
insulation of the motor
●Check input power
supply/ the setting of
detection level
● Increase accelerating
time.
● Increase stall point
overvoltage
●Check input power
supply/ the setting of
detection level
●Increase decelerating time
properly
●Add appropriate braking
component
● Increase stall point
overvoltage