VYBO Electric Vector V800 - Page 203

Chapter 6 Error checking and elimination
197
Overvoltage at
constant speed
OU3
1: The input voltage is too
high.
2: An external force drives
the motor during
deceleration.
1: Adjust the voltage to normal
range.
2: Cancel the external force or
install the braking resistor.
Power supply
fault
POFF
The input voltage is not
within the allowable range.
Adjust the input voltage to the
allowable range.
Lack of voltage
LU
1: Instantaneous power
failure occurs on the input
power supply.
2: The inverter's input
voltage is not within the
allowable range.
3: The bus voltage is
abnormal.
4: The rectifier bridge and
buffer resistor are defective.
5: The drive board is
defective
6: The main control board is
defective.
1: Reset the fault.
2: Adjust the voltage to normal
range.
3, 4, 5, 6: Find technical
support.
Inverter
overload
OL2
1: The load is too high or
another motor is connected
to the motor.
2: The inverter model has a
too low power class.
1: Reduce the load and check
the motor and mechanical
condition.
2: Select an inverter of higher
power class
Motor overload
OL1
1: P9.01 is set improperly.
2: The load is too high or
another motor is connected
to the motor.
3: The AC drive model is of
too small power class.
1: Set P9.01 correctly.
2: Reduce the load and check
the motor and the mechanical
condition.
3: Select an inverter of higher
power class.
Power output
phase loss
(reserved)
Lo
1: The cable connecting the
AC drive and the motor is
faulty.
2: The AC drive's three-phase
output is unbalanced when
the motor is running.
3: The drive board is faulty.
4: The module is faulty.
1: Eliminate external faults.
2: Check whether the motor
three-phase winding is normal.
3, 4: Find technical support