Goodrive3000 series medium voltage VFD
Goodrive3000 inverter
-141-
Fault
code
Fault type
Possible cause
Solution
Motor
overtemperature
protection
threshold is set improperly
Reset
the
motor
overtemperature
protection
threshold
SCE
SCR fault
SCR is damaged
SCR drive board is damaged
SCR drive cable is connected reversely
Replace SCR and drive board
Replace the drive cable
SF
Slave fault
Fault
occurred
to
the
slave
in
master/slave control mode
Check for the fault type and
rectify the fault
SdEu
Slave speed deviation
fault
In master/slave control mode, the load is
too heavy or stalled
Check the load of the slave to
ensure it is proper, and increase
the detection time
Check whether the control
parameters of the slave are set
properly
PLLF
Synchronous
switchover phase lock
failure
Phase lock failed during synchronous
switchover
Check the fluctuation of the grid
frequency
6.3 Common faults and solutions
The following table lists the common faults that the VFD may encounter and the solutions.
6.3.1 Motor fails to work
Motor fails to work
Whether the POWER
indicator is on?
Whether the keypad
displays information?
Whether the air switch
and EM contactor on the
input side are closed?
Close the air
contactor
Check the voltage
of RST with a
multimeter
VFD fault
Check the voltage
of the grid
Whether fault information
is displayed?
Identify the channel of
running commands
Press RUN to run
Running
properly
Rectify the fault
based on the
fault inforamtion
Running
properly
Running
properly
Whether the speed
command is set
properly?
Normal
running
Check the voltage of
UVW with a multimeter
VFD fault
Whether the motor is
properly wired?
Wire the motor
properly
Whether the load is too
heavy?
Reduce the load if
the motor is locked
due to heavy loads
Motor fault
Yes
No
No
Yes
Yes
Normal
Yes
Yes
Normal
Exception occurs
normal
Communication
Terminal
Keypad
Yes
Exception occurs
No
No
No
No
No
No
Normal
Normal
Exception occurs
Yes
Normal
Exception occurs
Yes
Check whether the input terminal
is in the correct state
Whether it runs
properly after the
parameters are
reset?
Whether the
communication wiring
is performed properly?
Whether communication
parameters are properly set?
Running
properly
Normal
Exception occurs
Whether it runs
properly after the
terminal is closed?
Exception occurs
Whether it runs properly after the
speed command is properly set?