Fault Shooting and Solutions VD120 Series Inverter User Manual
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154
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Err.05
Deceleration
overcurrent
(software)
1. Deceleration time is too
short
2. Load inertia torque is too
big
3. Inverter power is too small
1. Extend deceleration time
2. Add external energy
consumption braking unit
3. Selection inverter with bigger
class power
Err.06
Constant
speed
overcurrent
(software)
1. Load with jump or abnormal
2. Grid voltage is too low
3. Inverter power is too small
1. Check load or reduce load
jumping
2. Check grid input power
3. Selection inverter with bigger
class power
Err.07
Acceleration
overvoltage
1. The inverter output circuits
exist grounding short circuit
2. The control model is vector
and has no parameter
identification
3. Low voltage
4. Whether there is a sudden
load in running
5. Small frequency inverter
selection
1. Eliminate outside faults
2. Doing motor parameter
identification
3. Set the voltage to normal range
4. Cancel the sudden load
5. Selection inverter with bigger
class power
Err.08
Deceleration
overvoltage
1. High input voltage
2. In the process of
acceleration, there is an
extant force to drive the motor
running
3. Acceleration time is too
short
4. No installation brake unit
and brake resistor
1. Set the voltage to the normal
range
2. Cancel the external power or
installation brake resistance
3. Increase the acceleration time
4. Installation brake unit and
resistor
Err.09
Constant
speed
overvoltage
1. High input voltage
2. In the process of
deceleration, there is an
extant force to drive the motor
running
3. Deceleration time is too
short
4. No installation brake unit
and brake resistor
1. Set the voltage to the normal
range
2. Cancel the external power or
installation brake resistance
3. Increase the deceleration time
4. Installation brake unit and
resistor
Err.10
Undervoltage
1. Instantaneous power failure
2. The voltage of the inverter
input is not in the scope of the
specification requirements
3. Bus voltage is not normal
4. Rectifier bridge and buffer
resistance is not normal
5. Driven board abnomal
6. Control panel abnormal
1. Reset fault
2. Adjust the voltage to normal
range
3. Seeking technical support
4. Seeking technical support
5. Seek technical support
6. Seeking technical support
Summary of Contents for VD120 Series
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