VD500 Series Inverter User Manual Fault Shooting and Solutions
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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 acceleration 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
Err.11
Motor
overload
1. Motor protection parameters
F8-01 set whether appropriate
2. Whether the load is too large
or motor stalling
3. Small frequency converter
selection
1. Three-phase input power is not
normal
2. Drive board abnormal
3. Lightning protection plate
abnormal
4. Main control board abnomal
Err.12
Inverter
overload
1. Whether the load is too large
or motor stalling
1. Reduce the load and check the
motor and mechanical conditions
