VYBO Electric Vector V810 - Page 87

V 810 Chapter 5 Checking and removing errors
82
Error name
Display
Possible cause
Solution
Overvoltage
during
deceleration
OU2
1: The input voltage is too
high.
2: An external force drives the
motor during deceleration.
3: The deceleration time is too
short.
4: The braking unit and
braking resistor are not
installed.
1: Adjust the voltage to
normal range.
2: Cancel the external force or
install the braking resistor.
4: Install the braking unit and
braking resistor.
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.
Control 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