BYD PMW20 - Page 81

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59. Error ID: 02A88
Error Description: POWER MOS SHORT MDI ALARM : 02A88
Cause A
Before the master contactor is closed, the software checks the power bridge: convert to
the low-end power of the MOS tube, the phase voltage value drops to –BATT (rises to
+BATT). If the change of the phase voltage value is inconsistent with the command, the
fault signal is generated.
Handling Method:
Part of thesteps of detecting controller power:
1) Power off the controller.
2) Remove the three phases, U, V, W, of the motor from the controller.
3) Disconnect the batteries B+ and B-.
4) Turn the digital multimeter to the position of the measuring diode.
a) The red test probe connects to B-, the black test probe connects to the
controller. It is normal if the readings of U, V, W are 0.3V-0.6V.
b) The black test probe connects to B+, the red test probe connects to the
controller. It is normal if the readings of U, V, W are 0.3V-0.6V.
60. Error ID: 02A92
Error Description: CURRENT GAIN
Cause A
The maximum current gain parameter is the factory set value, showing that the program of
maximum current adjustment parameter has not been enabled.
Handling Method:
The technical staff will set the current gain parameters correctly. Please use ZAPIConsole
software to download the controller parameters and send them to BYD technical support;
CAN Console software – Connect CAN box – Start forklift – Connect controller – Enter
password ZAPI - Enter the parameter page – Receive – File – Save (as shown below)
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SM-PMW202020001-EN
SM-PMW202020001-EN