Veichi AC80T Manual page 45

Motor heat diagnoses process
Adjust torque imporoving
value and V/F characteristic
Reduce load or
improve capacity
Motor does not rotate diagnoses process
Work after solving
fault and reset
It works after checking
the cause and solving
the problem
Whether upper frequency limit F0.11 or given frequency
is lower than the start frequency F1.01setting
Whether load
is too large
no
no
Whether torque improving and V/
F characteristic are suitable or not
yes
Whether load is too large
Whether output terminals U/V/W output
voltage /current three phase balance well
Maybe inverter fault or motor heat caused by
noise.Please find technic support
yes
Whether keyboard
displays fault information
no
Have input frequency
signal or not
yes
yes
Is there voltage output on output terminal U/V/W
and three phase balance ok or not?
yes
yes
Whether
correct or not
yes
Whether torque improving
Motor fault
value is suitable
Maybe motor is locked because of too large load.Load
should be reduced.If there is braking or brake uni,
please check whether it is loose
AC80T Tower Crane Purpose VFD Manual
motor heat
yes
no
no
yes
no
Motor does
not work
no
yes
It works after checking the
cause and slving the problem
yes
no
Maybe inverter fault .Please
find technic support
no
wiring is
no
yes
44
Whether motor continuously
run at low speed
yes
Use special motor for inverter
Maybe motor fault
Have input command
signal or not
no
It works after correct the
upper frequency or given
frequency
Correct connect
Improve torque
improving value