PMW20
141
When the electric lock is turned on, the controller will charge the capacitance through a
power resistor and detect whether the capacitance is overcharged in the regulated time. If
the capacitance is in insufficient power and voltage thereof is still 20% lower than that of
the battery, the controller will alarm and thereby the master contactor will not closed down.
Handling Method:
1. If peripheral devices such as DC-DC and motor, or other devices interfere with the
charging of the controller, interference on these devices should be eliminated.
2. If the charging resistance disconnects and faults are found in the charging circuit and
power models, the controller should be replaced.
The operating method is same as that of the error code 02A00.
28. Error ID: 02A73
Error Description: RAM error
Cause A
Restart the key switch. If the error still exists, replace the controller.
Handling Method:
Restart the key switch. If the error still exists, replace the controller.
The operating method is same as that of the error code 02A00.
PMW20
140
2.Check whether the battery voltage is too low or too high.
3.Detect B+ and B, and check whether the power cable over the binding post of the
master contactor is tightened well.
4.Check whether calibration parameters of controller voltage are consistent with those of
actual voltage.
5.For the hardware circuit error with over-voltage protection on the logic card, replace the
controller.
The operating method is same as that of the error code 02A00.
25. Error ID: 02A55
Error Description: LOGIC FAILURE#2
Cause A
It is a fault on the phase-voltage feedback hardware circuit of the logic card.
Handling Method:
For it is a fault on the phase-voltage feedback hardware circuit of the logic card, replace
the controller.
The operating method is same as that of the error code 02A00.
26. Error ID: 02A56
Error Description: PUMP I NO ZERO
Cause A
In standby mode (the pump motor is not activated), the current sensor on the pump
controller shows a value beyond the allowable range.
Handling Method:
The hardware problem of the controller may result from the fault of the current sensor or
the power module. Just replace the controller. The operating method is same as that of
the error code 02A00.
27. Error ID: 02A60
Error Description: CAPACITOR CHARGE
Cause A
Charging capacitor system:
SM-PMW202020001-EN
SM-PMW202020001-EN
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