INVT Goodrive30 VFD Series Operation Manual page 124

Goodrive30 Series VFD
Fault code Fault type
Overcurrent
OC3 during constant
speed running
UV
undervoltage
OL1 Motor overload
OL2 VFD overload
Phase loss on
SPI
input side
Phase loss on
SPO
output side
Rectifier module
OH1
overheat
Inverter module
OH2
overheat
EF External fault
CE
communication
 To-ground short circuit or
output phase loss occur.
 Strong external
interference sources.
 Overvoltage stall
protection is not enabled
 Grid voltage is too low.
Bus
 Overvoltage stall
protection is not enabled.
 Grid voltage is too low.
 Rated motor current is set
improperly.
 Motor stalls or load jumps
violently.
 Acceleration is too fast.
 The motor in rotating is
restarted.
 Grid voltage is too low.
 Load is too large.
 Power is too small.
Phase
fluctuation occurred to R, S
and T input
Phase loss occurred to U, V,
W output (or the three phases
of motor is asymmetrical)
 Air duct is blocked or fan
is damaged.
 Ambient temperature is
too high.
 Long-time overload
running.
SI external fault input terminal
acts.
 Baud rate is set
485
improperly.
Possible cause
loss or violent
-118-
Solution
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.
 Check the setup of related
function codes.
 Check the grid input power.
 Check the setup of related
function codes.
 Check the grid voltage.
 Reset the rated motor
current.
 Check the load and adjust
torque boost.
 Increase acceleration time.
 Avoid restart after stop.
 Check the grid voltage.
 Select the VFD with larger
power.
 Select a proper motor.
 Check the input power.
 Check the installation
wiring.
 Check the output wiring.
 Check the motor and
cable.
 Ventilate the air duct or
replace the fan.
 Lower the ambient
temperature.
Check the external device
input.
 Set proper baud rate.
 Check the wiring of
Fault tracking