BYD EPS14Pi - Page 37

06A11
DATA ACQUISITION
This activated fault proves that it is in the data acquisition phase. Please wait until the
data acquisition is complete .
06A12 LOGIC FAILURE #1
A fault that occurs in the low-voltage or over-voltage protection state. In a 24V system,
the controller detects a voltage of more than 45V or less than 9V; In a 48V system, the
controller detects a voltage of more than 65V or less than 11V.The possible causes are:
1. Whether there is a short circuit in the circuit system, such as DC-DC, brake coil, etc.,
or whether the input power of the controller i
s in good condition. (walking controller)
2. Whether the battery voltage is too low or too high.(walking controller)
3. Whether the power cables on the terminals such as B+, B, and the main contactor
are fastened. (walking controller)
4. Whether the voltage calibration parameter of controller is consistent with the actual
voltage. (walking controller)
5. The hardware circuit of the over-voltage protection on the logic card is faulty. Replace the
controller. (walking controller)
6. The voltage between W phase and U phase does not meet the requirements. Replace the
controller. (steering controller)
06A13
LOGIC FAILURE #2
The voltage between W phase and V phase does not meet the requirements. Replace the
controller. (steering controller)
06A14
LOGIC FAILURE #3
The output VU-VV of the voltage amplifier exceeds 2.2V-2.8V. Replace the controller (steering
controller).
06A15
LOGIC FAILURE #4
The output VW-VV of the voltage amplifier exceeds 2.2V-2.8V. Replace the controller
(steering controller).
06A16
KS CLOSED
The main contactor detects that the safety contactor of the slave contactor is closed in
advance. Replace the controller.
06A17
KM CLOSED
The slave contactor detects that the safety contactor of the main contactor is closed in
advance. Replace the controller.
06A18 KS OPEN
The main contactor detects that the safety contactor of the slave contactor is not closed in time.
Replace the controller.
06A19 KM OPEN
The slave contactor detects that the safety contactor of the main contactor is not closed in time.
Replace the controller.
06A20 MAIN CONT. OPEN
The logic card has driven the main contactor coil, but the contactor is not closed. Possible
causes are as follows:
1. Mechanical failure of contactor or stuck, etc.
2. Poor contact of the contactor.
3. If the contactor works properly, replace the controller.
06A21 MICRO SLAVE
Replace the controller.
06A22 S.P OUT OF RANGE
If a single potentiometer, such as CPOC1 end, exceeds the range of 0.8v-4.2v, an alarm will be
raised. When a dual potentiometer is selected, the sum of the two sliding ends
(CPOC1+CPOC2) exceeds the range of 4.4v-5.5v, an alarm will be raised. Check the
connection of the potentiometer.
06A23 F.B OUT OF RANGE
When the feedback potentiometer (CPOT connected to CNB # 6) is faulty, an alarm will be
raised. If the range of CPOT exceeds the range 0.3V-4.7V, an alarm will be raised. Check if
the steering motor encoder is connected correctly and whether there is a circuit break.
06A24 MICRO SLAVE KO
1. When a stepper motor is used, the direction of the main microprocessor is inconsistent with
that of the stepper motor detected from the slave microprocessor.
2. In the closed-loop control system, the direction of the stepper motor detected by the main
contactor is wrong and inconsistent with the direction of the stepper motor detected from the
slave contactor.
3. The main contactor did not detect the steering limit, but the slave contactor did.
06A25
ENCODER ERROR
The controller detected a significant difference in the two consecutive speed readings of
the encoder since the internal encoder cannot change the speed very much in a short time.
Check the mechanical and circuit functions of the encoder to make sure if the encoder is
faulty (the circuit of one or two encoders is worn or broken); Or the alarm may be
caused by electromagnetic interference on the sensor bearing. If neither, replace the
controller. Please note that manual operation may also cause this fault. In this case, you
need to power off and restart the vehicle.
For example: 1.The vehicle suddenly hit an obstacle and was unable to walk;
2. Slam on the brake at high speed.
06A26 BAD ENCODER
SIGN
Exchange encoder A phase and B phase;
06A27 GAIN EEPROM KO Replace the controller;
06A28 CAN BUS KO
1. Check if CAN BUS communication cable is connected well; 2. Check if the
communication baud rate is consistent; 3. Check if CAN communication is on;
4. Check if CAN communication loop resistance is 60Ω.
06A38 POSITION
1. Check if the connection of A phase and B phase of steering motor encoder is loose.
2. Check if A phase and B phase of the steering motors are disturbed.
06A39 SERIAL ERROR Replace the controller.
06A40 MICRO SLAVE #4 Replace the controller.
06A41 SLAVE COM. ERROR
Replace the controller.
06A43 CURRENT GAIN Replace the controller.
06A44 CLOCK PAL NOT OK Replace the controller.
06A45 STEER SENSOR KO Check if the wiring and output of two-way angle potentiometer is correct.
06A46 JERKING FB Replace feedback potentiometer;
06A47 FB POT LOCKED
1. Check if there is mechanical loosening of the feedback angle potentiometer;
2. Check if there is a mechanical limit;
3. Check if the feedback angle potentiometer reaches its own limit point;
4. If this fault occurs due to the reverse direction of the steering wheels during installation,
adjust the direction of the steering wheels.
06A48 MOTOR TEMPERAT.
1. This fault occurs if the motor temperature digital switch is turned on, or the analog
signal exceeds the cutoff value.
2. When the motor temperature reaches 120℃, the controller gives an alarm, at which
point the vehicle
can still walk, but the maximum current is reduced, so does the
performance of the vehicle. When the motor temperature reaches 125 ℃ , the motor
stops working, and you should try to cool the motor.
3. If the fault still exists when the motor cools down, check the wiring. If all is good,
replace the controller.
06A49 MOTOR LOCKED The time of maximum sustained current of the steering motor exceeds 1s.
06A50 STEPPER MOT MISM
Replace the controller.
06A52 MICRO SLAVE #8 Replace the controller.
06A53 INPUT ERROR #1 Check if CAN # 4 connection cable is correct.
06A54 CAN BUS KO SL.
Replace the controller.
06A55 SL EPS NOT ALL. Replace the controller.
06A56 SL CENTERING Replace the controller.
16A06 Check the CAN cables of the handle, instrument and steering controller.
17A01 battery high temp.waring
17A02 battery high temp.alarm
17A03 battery leakage waring
17A04 battery leakage serious
17A05 battery Status Alarm
17A06 BDI low
17A07 BDI low
17A08 BDI low
USER MANUAL
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OM-EPS14Pi2019001- E N
MAINTENANCE OF VEHICLES
EPS14Pi
FAULT
CODE
ALARM
REMEDY
FAULT
CODE
ALARM
REMEDY