
[120]
power supply of transducer abnormal
yes
no
no
no
yes
yes
no
correct the wiring due to diagram
DC bus line voltage circuit on
inverter board broken down,
replace inverter module board
yes
measure if DC bus
line voltage between P
and N on module is
less than 140V
check if voltage of power
supply is normal
check rectifier, reactor,
electrolytic capacitor in
inverter main circuit
if relay or AC
contactor acts
well
improve power supply circuit
check if wire of electric
box is correct
adjust or replace relay or AC
contactor
95