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LED indicator functions
The functions of the LED indicators on the main control board are defined in Table 6-6.
Table 6-6 Functions of LED indicators on the motor drive board
Possible causes when the LED does
not light
Power supply defective, DC circuit
cable defective, motor drive board short-
circuited
Power supply defective, DC circuit
cable defective, motor drive board short-
circuited
Power supply defective, DC circuit
cable defective, motor drive board short-
circuited
ARM working status indicator
Power supply defective, motor drive
board defective
FPGA working status indicator
Power supply defective, motor drive
board defective
Motor running status
indicator
Power supply defective, motor cable
or motor sensor defective, motor drive
board defective
Test points
The functions of the test points on the main control board are listed in Table 6-7.
If power errors are suspected, first pull out all other cables other than power cables to rule out the
possibility of any short-circuited peripheral.
Table 6-7 Functions of test points on the motor drive board
Voltage is not 24V, motor drive board or power
supply is defective
Voltage is not 12V, motor drive board or power
supply is defective
Voltage is not 5V, motor drive board or power supply
is defective
Voltage is not 3.3V, motor drive board or power
supply is defective
Voltage is not 2.5V, motor drive board or power
supply is defective
Voltage is not 1.2V, motor drive board or power
supply is defective
6.5.4 Troubleshooting for Motor drive Board
Table 6-8 lists the errors commonly found on the motor drive board as well as their solutions.
However, the list only includes hardware errors and sometimes software errors may cause similar
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