1. The GD300 phase loss detection detected by
software, no hardware detection circuit, judge by detecting the bus voltage.
2. The requirement for the lack of phase loss is the
frequency of the voltage amplitude and fluctuation of the bus, even though the
input line phase loss occurred, but the load is not large, and it is possible
that it will not skip the phase loss protection.
1. The motor parameters are not correct, do parameter autotuning,
or the motor wiring is not reliable.
2. The load is too large, reduce the load and increase
P13.02.
3. The acceleration time is too short, increase ACC
time value.
1. The parameter is incorrect, and the deviation of
the output value of the speed and the value of the speed is more than that of
the P11.14 (velocity deviation detections value). The duration of the parameter
is more than P11.15 (the velocity deviation detection time).
2. The load inertia is too large at the start of the
synchronous machine, and P13.11 is set too large, reduce the load inertia or
increase P13.02 injection current.
3. ACC/DEC time is too short, increase ACC/DEC time.
4. The load is locked and check the mechanical system.
The output of the GD300 inverter will automatically
detect the output of the ground short circuit.
1. Damage to the inverter module, check the drive line
and replace the device.
2. The motor is short circuit to the ground, please
check whether the motor is short circuited, and confirm the insulation
resistance of the motor.
1. The deceleration time is too short, the
regenerative feedback energy is too large, increasing the ACC/DEC time
properly.
2. Increase brake resistors or brake units and set the
P08.37 (suitable for models under 30KW).
1. The motor is started with heavy load and the load
is blocked, which is generally easy to generate OL2.
2. The motor is brake mechanically.
3. The motor parameters are not set correctly, or the autotuning
is not allowed, please do the motor parameter autotuning again.
1. Check the protection value of the leakage
protection switch, whether the current protection value of the protection
switch is proper, if it is not the specialized protective switch, please replace.
2. Remove the jumpers on the inverter power input
terminal that meets C3 standards, confirm after power up again.
3. Current leakage protection switch is installed with
filter capacitor.
Note: During operation, if current leakage protection
switch trips, users can reduce the carrier wave.
The SPI is input phase loss detection fault, which
will occur if the phase loss occur during power up, UU fault will occur if
phase loss occur during operation. The possible causes may be:
1. In the condition that the input phase loss protection
is opened, the input power supply phase loss occur;
2. In the condition that the input phase loss protection
is opened, input the missing phase detection circuit failure.
Troubleshooting:
1. Check whether the power input is normal (phase loss
or imbalance among three phases)
2. Check the voltage between input phase loss test
point PL and GND, normal DC is 5V, square wave during phase loss.
When input power is normal, if PL output phase loss
occur, it may be caused by the front-end rectifier tube breakdown or current
limit resistor open circuit, or due to poor contact of flat cable.
1. Check whether the inlet voltage is too low or the
power supply voltage fluctuates too much. If yes, adjust the voltage to normal
range.
2. Check the keyboard to see whether the DC bus
voltage is normal (1.35 times of the inlet voltage), check whether the PE.08
voltage rating is correct, if it is not standard voltage, adjust to the
appropriate voltage.
3. Whether the voltage test point CVD voltage of the
drive board is normal Ucvd/Udc= 3.3/1000), check whether the bus voltage residual
voltage circuit on the power board is normal, such as replacement of the corresponding damaged
components.
1 Check whether the input voltage is too high and
adjust the voltage to normal range (380V±15%), so that the DC bus voltage is no higher than
800V.
2. Check whether the parameter setting of inverter
correct, or whether the motor autotuning parameter is correct. If it is
incorrect, please correct the parameters according to the actual situation, and
the motor parameters will be re-autotuned.
3. Check whether overcurrent stall occurred to the
load during inverter operation, if yes, adjust the parameters, CHF: Pb.10=1,
CHE:Pb.04=1, CHV:Pb.09= 1.
1 Check whether the input voltage is too high and
adjust the voltage to normal range (380V ± 15%), so that the DC bus voltage is no higher than
800V.
2 Check whether the deceleration time is too short,
and extend the deceleration time appropriately if conditions permit.
3 Check whether the load is too large or the load is
driven by an external force during acceleration. If yes, cancel the external
force, or change to free coast.
4 If condition 3 cannot be met, install the brake device.
1 Check whether the input voltage is too high and
adjust the voltage to normal range (380V ± 15%), so that the DC bus voltage is no higher than
800V.
2 Check whether the parameter setting of the inverter
is correct, or whether the motor autotuning parameter is correct. Please change
to correct parameters according to the actual situation.
3 Check whether the acceleration time is too short,
and extend the acceleration time appropriately if conditions permit.
4 Determine whether the inverter has an external force
to drag the motor during the acceleration process. If yes, try to cancel the
force or install the brake device.
1. Check whether the parameter settings of the inverter
are correct, or whether the motor autotuning parameters are correct, and
correct the parameters according to the actual conditions.
2. Check whether there is any leakage on the inverter
output circuit, if there is any leakage please rule out the causes, determine
the inverter output line is less than 50 m, if the output line is too long,
advising clients to install reactor or output filter.
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