Goodrive300-21 integrated machine for air compressor
Troubleshooting
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70
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6 Troubleshooting
6.1 Faults and countermeasures for integrated machine
Table 6-1 Faults and countermeasures
Fault
code
Fault type
Possible cause
Solution
OUt1
Inverter unit U-phase
protection
ACC is too fast;
IGBT module is damaged;
Misacts
caused
by
interference;
Drive
wires
are
poorly
connected;
To-ground short circuit occurs.
Increase ACC time;
Replace the power unit;
Check drive wires;
Check whether there is strong
interference surrounding the
peripheral device.
OUt2
Inverter unit V-phase
protection
OUt3
Inverter unit
W-phase protection
OV1
Overvoltage during
acceleration
Exception occurred to input
voltage;
Large energy feedback.
Check the input power;
Check whether load DEC time
is too short;
or the motor starts during
rotating;
or additional dynamic brake
components is required.
OV2
Overvoltage during
deceleration
OV3
Overvoltage during
constant speed
running
OC1
Overcurrent during
acceleration
ACC/DEC is too fast;
The voltage of the grid is too
low;
Inverter power is too small;
Load transient or exception
occurred;
To-ground short circuit or
output phase loss occurred;
Strong external interference
sources.
Increase ACC/DEC time;
Check the input power;
Select the inverter with larger
power;
Check if the load is short
circuited (to-ground short circuit
or line-to-line short circuit) or the
rotation is not smooth;
Check the output wiring;
Check
if
there
is
strong
interference.
OC2
Overcurrent during
deceleration
OC3
Overcurrent during
constant speed
running
UV
Bus undervoltage
fault
The voltage of the grid is too
low.
Check the grid input power.
OL1
Motor overload
The grid voltage is too low.
The motor rated current is set
incorrectly.
The motor stall occurs or the
load transient is too large.
Check the grid voltage.
Reset the motor rated current.
Check the load and adjust the
torque boost quantity.
OL2
Inverter overload
ACC is too fast;
The motor in rotating is
Increase ACC time;
Avoid restart after stop;
