BYD EPS14P, Operator'S Manual

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MAINTENANCE
OPERATOR MANUAL 62
EPS14P
63 OM-EPS14P2019001-EN
Schematic of Electrical System
Display ALARM Fault name Recommended inspection
02A00
BATTERY LOW Battery level low
If the parameter “BATTERY CHECK” is not set to zero, no LED representing battery state-
of-charge will come on when battery state-of-charge is less than 15%. The warning will be
displayed and the lift function of the forklift will be disabled. In this case, it is imperative
to charge the battery. If the battery is operational, check whether the controller parameter
“ADJUST BATTERY” agrees with the battery voltage.
Battery charging
EPS RELE OPEN EPS relay open Check whether the EPS controller has fault
DATA ACQUISITION Data collection
Activation of this fault indicates data acquisition is under way. Wait data acquisition is
completed.
Do not operate during data collection and restart after completing
CHECK UP NEEDED Maintenance interval Maintenance interval is expired. Maintenance is required.
Change CHECK UP DONE to ON, turn off and restart
02A01 WRONG CONFIG Wrong configuration Clear EEPROM
02A08
WATCHDOG Watchdog fault
Turn the key switch to “START”, to see whether the watchdog circuit is activated
before the software is run. In the standby or operation state, the watchdog signal
is invalid (alarm state).
Fault analysis: The watchdog hardware circuit or microcontroller output section
is damaged. Neither of the two cases is associated with external components.
Replace the controller.
FLASH CHECKSUM Flash memory fault
With the key switch turned to “ON”, the value stored in the flash memory by
the program should be a positive value. This fault will be reported in the case of
a negative value. Fault analysis: The flash memory of the microcontroller could
become faulty. The flash memory, or the program stored could be damaged.
Attempt to configure the program of the logic card again. If the fault is still there,
it exists in the microcontroller. Replace the controller.
WATCHDOG#2 Watchdog fault 2
Possible cause: During startup of the forklift, the watchdog circuit has been
activated before the software is initiated. In the standby or operation state, the
watchdog signal is invalid (alarm state). Fault analysis: The watchdog hardware
circuit or microcontroller output section is damaged. Neither of the two cases is
associated with external components. Replace the controller.
02A10 WRONG RAM F a u l t w i t h t h e
dynamic memory
The fault is detected when the main memory is tested. Registered address is
“DIRTY”. This fault can limit the operability of the forklift.。
Fault analysis: Turn the key switch to “OFF”, then to “ON”. If the fault still
exists, replace the controller。
02A11 STALL ROTOR Motor stalling
1.Motor stops running.2.Motor encoder fault3.Damaged harness or incorrect
wiring connection.4.Problem with power supply to the encoder.
02A13
EEPROM KO EEPROM error
1. Restart the key switch, if the fault still exists, please replace the controller; 2.
Restart the key switch, if the fault disappears, please reset the parameter.
Perform CLEAR EEPROM operation. If the fault disappears, change the parameters
one by one to the set value. If the fault does not disappear, replace the controller.。
PARAM RESTORE Parameter restore
If the CLEAR EEPROM operation has been performed, the fault prompt parameter
is restored to the default; if there is no CLEAR EEPROM, there is a fault inside the
controller.
02A16 AUXOUTPUT KO E l e c t r o m a g n e t i c
brake coil fault
Check the electromagnetic brake coil for abnormality. If not, replace the controller
02A17 LOGIC FAILURE #3 Logic fault #3 Sudden disconnection during working of coil output line./ Fault with the current
protection function of logic card The controller should be replaced.
02A18 LOGIC FAILURE #2 Logic fault #2
1. Check the motor power circuit for problems, including the fuse of controller;
2. Check the parameter table; 3. If there is no problem with the above two items,
replace the controller.
02A19 LOGIC FAILURE #1 Logic fault #1 1. Test the battery voltage; 2. Check if the ADJUST BATTERY in the controller
matches the actual battery voltage.
02A20 HEIGHT SENS OPEN
02A21 CHARGE SAFETY Charge safety
This fault can be reported if the forklift is operated while the battery is being
charged. This prevents anyone from operating the forklift while the battery is
being charged.
02A22 HEIGHT SENS LOCK
reset cutback 1
02A26 CURRENT SENS. KO
02A27 PHASE KO Open circuit of U/V/
W phase
Check whether U/V/W phase is correctly connected.
Fault Code Table