Chapter 6 Fault diagnosis and solutions VFD500 high performance vector control frequency inverter user manual
1: Instantaneous power failure
occurs
on the input power supply or
input phase loss
2: The frequency inverter's input
voltage is not within the
allowable
range.
3: Cut off the power during
operation
4:the internal wiring of the
inverter is loose, or the hardware
is bad.
1:Check if the input
power supply is
abnormal, whether the
input power terminal is
loose, whether the input
contactor or the air switch
is abnormal.
2:adjust the voltage to the
normal range
3:Power off after the
inverter stops
4:seeking technical
support
5: For the unstable power
supply, if the performance
requirements are low, try
to enable the
1: Instantaneous power failure
occurs
on the input power supply
2: The frequency inverter's input
voltage is not within the
allowable
range.
3: Cut off the power during
operation
4:the internal wiring of the
inverter is loose, or the hardware
is bad.
1:Check if the input
power supply is
abnormal, whether the
input power terminal is
loose, whether the input
contactor or the air switch
is abnormal.
2:adjust the voltage to the
normal range
3:Power off after the
inverter stops
4:seeking technical
support
5: For the unstable power
supply, if the performance
requirements are low, try
to enable the
Frequency
inverter
overload
1:The load is too large or the
motor is blocked.
2:The large inertia load
acceleration and deceleration
time is too short
3: When the VF is controlled, the
torque boost or V/F curve is not
suitable.
4:The frequen cy converte r
selection is too small
5:Overload at low speed
operation
1. Reduce the load and
check the motor and
mechanical conditions.
2, increase the
acceleration and
deceleration time
3. Adjust the torque boost
or V/F curve
4, select the inverter with
a larger power level
5. Perform motor self-
learning in cold state and
reduce carrier frequency
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