Veichi AC90 Manual page 63

AC90 TENSION CONTROL FREQUENCY INVERTER MANUAL
Over load
Change externa
lthermal relay
Correct setting value
Reduce load or
improve capacity
Restart after motor stop or
change start mode F1.00
to 1/2
Prolong ACC/DCC time
Change torque improving
or V/F curve setting
No display
Whether keyboard
connect line is reliable
yes
Motor overload E.OL1
no
Whether electric thermal relay overload
characteristic matches the motor overload
characteristic
no
Whether electric thermal relay overload
relay setting FA.20 is suiable
yes
yes
yes
no
Whether torque improving or V/F curve setting is suitable
Maybe inverter fault or misact.Please seek for technic support
Inverter keyboard
LED no display
yes
Whether power indicater
linght on power board is
on or not
no
Whether power input
connect
terminals R/S/T is normal
yes
Whether there is short connect
or DC reactor between terminals
P1 and P+l
yes
inverter
Maybe fault or motor heat
caused by noise.Please find technic support
BASIC OPERATION AND TRIAL RUN
Inverter overload E.OL2
yes
yes
Whether load too high
no
Whether the motor stops while restart
no
Whether ACC/DCC time is too short
no
yes
no
Whether circuit breaker
at power side is connect to
contacter
yes
no
Find our the fault cause
and clear the fault
no
58
no
no
no
yes
no
connect
Short connect or
connect DC reactor