BYD PMW20 - Page 78

PMW20
155
51. Error ID: 02A78
Error Description: VACC NOT OK
Cause A
Detection time: the standby state, the alarm displays that the voltage of the accelerator is
at least 1V higher than the minimum value set in the accelerator signal (PROGRAM
VACC).
Handling Method:
The upper and lower voltage limits of the accelerator are not collected. Enter the
PROGRAM VACC menu and recollect again. Accelerator voltage collection steps:
1) Open ZAPI CAN CONSOLE → FUNCTION → program VACC → click acquire
2) Rotate the handle and a value appears. Save, restart the key.
Refer to the 2.3 accelerator voltage collection and debugging steps in chapter 2 of the
ZAPI controller tutorial for details.
3) Error occurs in the accelerator wherein its pedal does not return, or error occurs inside
the accelerator.
4) Accelerator connection line failure or controller failure.
52. Error ID: 02A79
Error Description: INCORRECT START
Cause A
Before the key switch is closed, the start sequence of the valve control switch or hoist
speed sensor is wrong.
Handling Method:
The startup sequence is not correct. Possible reasons:
1) The direction switch has been closed before starting.
2) The operation sequence is wrong, the C6 handle limit switch has not been triggered
when operating moving or lifting functions.
3) The wire connection is incorrect.
4) If a fault cannot be eliminated, the controller shall be replaced.
PMW20
154
48. Error ID: 02A04
Error Description: COIL SHOR. EV
Cause A
1)The drive circuit of the controller coil A1/A2/A8 cannot drive the load.
2)The coil A1/A2/A8 is short-circuited or there is persistent currents greater than 6A
through the coil.
Handling Method:
1)Check whether there is a short circuit or low impedance pulling down the output
between the electromagnetic brake drivers A1/A2/A8.
2)The drive circuit of the controller logic card failure, replace the controller. Operation
method of replacing the controller is the same as the Error ID 02A00.
49. Error ID: 02A77
Error Description: CONTACTOR OPEN
Cause A
The logic card has driven the master contactorcoil, but the contactor does not close;
Handling Method:
1) Contactor mechanical failure, stuck etc.
2) The contact of the contactor is poor.
3) If the contactor works normally, replace the controller.
50. Error ID: 02A05
Error Description: TILLER ERROR
Cause A
The sequence from the handle limit switch S3 output to the controller C6 pin input is
wrong;
M1:
The direction switch and accelerator have input in advance before the handle limit switch
is closed.
1) Check whether the accelerator has output in advance.
2) Check whether the direction switch is closed before the handle limit switch.
3) Or the error disappears automatically after resetting the handle limit switch.
SM-PMW202020001-EN
SM-PMW202020001-EN
Operation method of replacing the controller is the same as the Error ID 02A00.
Operation method of replacing the controller is the same as the Error ID
Operation method of replacing the controller is the same as the Error ID 02A00.