H2B USER'S MANUAL - 550145G Page 37/60
5.3 H2B TRACTION DIAGNOSIS
Description of the alarms signalled by the diagnostic LED.
The alarm code is shown in parentheses. A detailed description is given in the section
“DECODING THE ALARMS DISPLAYED ON CONSOLE” on point 5.5.
1 BLINK = Logic anomaly (EEPROM DATA KO, EEPROM PAR. KO,
EEPROM CONF. KO, EEPROM OFF-LINE, CHOPPER NO CONF,
WATCH-DOG).
2 BLINKS = Running request on startup or error in handle/speeds sequence
(INCORRECT START).
3 BLINKS = Error on VMN test (NO FULL CONDUCTION, VMN LOW).
4 BLINKS = Accelerator high in standby - this error inhibits operation (VACC NOT OK).
5 BLINKS = Error in reading current - this error inhibits operation (I HIGH AT STAND,
I=0 EVER).
6 BLINKS = Malfunctioning of the contactor driver circuit (DRIVER SHORTED,
COIL SHORTED).
7 BLINKS = Excessive temperature, greater than 79°C (TH. PROTECTION).
8 BLINKS = Contactors do not open or VMN high in standby (BRAKE CONT. OPEN,
DIR CONT. OPEN, VMN HIGH).
9 BLINKS = Contact stuck (BRAKE CON CLOSED).
CONTINUOUS BLINKING (32 BLINKS) = Low battery charge, battery with < or =10% of
residual charge (BATTERY).
LED REMAINS ON = Double running request (FORW BACK).
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