Doosan B20S-3, Спецификации систем эксплуатации, испытания и регулировка, Страница: 95 / 123

94 MicroController Control System Troubleshooting
E) Reverse contactor is supplied with a correct voltage but it doesn't close : everything said at point D) for forward contactor is
valid here.
F) Reverse and forward contactor are supplied with a correct voltage but they doesn’t close ; See point D).
G) Supply don’t come up to forward contactor, please check cabling and connections from forward contactor coil to connectors
X and Y.
H) Supply don’t come up to reverse contactor, please check cabling and connections from reverse contactor coil to connectors
X and Y.
I) Supply don’t come up to forward contactor and reverse contactor, please check cabling and connections from the coils to
connectors X and Y.
For points G), H), I) replacing controller may be necessary.