HELI G Series Operation & Service Manual page 97

169 BMS current cutout protection
171 BMS communication error
4.8.3 SONGZHENG control system
Tab. 4-8 Fault code and treatment of SONGZHENG controller
No Fault
Motor phase line
1
Open
Main contactor
2 coil open or
short circuit
Main contactor
3
adhesion
4 Precharge fault
5 High pedal
6 Undervoltage
Serious
7
undervoltage
Fault generation
condition
Motor phase line has more
than one phase
connected;
DRV1 short circuit
DRV1open circuit
Main contactor adhesion
(note: enable contactor test
is required)
Precharge failure
Close the key, in the given
direction or throttle >25%;
Power voltage ≤
configured undervoltage
value ±2V
Power voltage ≤ serious
undervoltage value ± 2V
(note: serious undervoltage
value = configured voltage
BMS cut output current and please check
Please check CAN, controller and
Fault exit condition
1. Connect the phase
not line;
2. Restart the key
1. Connect DRV1
or coil;
2. Restart
interlock switch
1. Replace the main
contactor;
2. Restart the key
1. Ensure the correct
connection of B+ and
B- lines;
2. Restart the key
Neutral and throttle
output≤25%
Power
the
voltage >(configured
undervoltage value
+2V)± 2V
Power
voltage >(seriously
undervoltage
+2V)± 2V
94
battery.
battery.
Troubleshooting
1. Disconnect
immediately after
the contactor
closed;
2. Fault indicating
lamp report 3-7 fault
code
1. Main contactor
disconnected;
2. Fault indicating
the
lamp report 3-1 fault
code
1. The main
contactor is not
suction;
2. Within 2 seconds,
the fault indicator
will report the 3-8
fault code
1. The main
contactor is not
suction;
2. Within 2 seconds,
the fault indicator
will report the 1-4
fault code
1. The controller
does not output;
2. Failure indicator
light report 4-7
failure codes
1. Limit the
maximum current
output by the
controller
proportionally;
2. Failure indicator
light shall report 2-3
failure codes
1. The controller
does not output;
2. The failure
indicator report a
is