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Wiring of the Main Circuit

SIZE A main circuit wiring

  • Do not connect power supply input (L1/L2/L3) to output terminal (U/V/W) for motor;
  • Wiring of motor output terminal(U/V/W) is consistent with motor (U/V/W) wiring; The sequence can't be wrong;
  • Do not put power cable and signal cable together, and keep a distance more than 30cm.
  • Do not switch servo power supply frequently; Otherwise, capacitor will be charged frequently inside the servo, and pre-charging circuit will be overloaded, resulting in performance degradation. Please keep switching frequency below 1 time per minute;
  • After the servo is powered off, there might still be residual high voltage inside servo. Only after power-off for 15 minutes and wait until the power indicator is off, can the wiring be executed.

SIZE B main circuit wiring

  • Do not connect power supply input (L1/L2/L3) to output terminal (U/V/W) for motor;
  • Wiring of motor output terminal(U/V/W) is consistent with motor (U/V/W) wiring; The sequence can't be wrong;
  • Do not put power cable and signal cable together, and keep a distance more than 30cm.
  • Do not switch servo power supply frequently; Otherwise, capacitor will be charged frequently inside the servo, and pre-charging circuit will be overloaded, resulting in performance degradation. Please keep switching frequency below 1 time per minute;
  • After the servo is powered off, there might still be residual high voltage inside servo. Only after power-off for 15 minutes and wait until the power indicator is off,can the wiring be executed.

SIZE C main circuit wiring

  • Do not connect power supply input (L1/R, L2/S, L3/T) to  output terminal (U/V/W) of motor;
  • Wiring of motor output terminal(U/V/W) is consistent with motor (U/V/W) wiring; The sequence can't be wrong;
  • Do not put power cable and signal cable together, and keep a distance more than 30cm.
  • Do not switch servo power supply frequently; Otherwise, capacitor will be charged frequently inside the servo, and pre-charging circuit will be overloaded, resulting in performance degradation. Please keep switching frequency below 1 time per minute;
  • After the servo is powered off, there might still be residual high voltage inside servo. Only after power-off for 15 minutes and wait until the power indicator is off,can the wiring be executed.

SIZE D main circuit wiring

  • Do not connect the power input (R, S, T) to the output terminal (U, V, W) of motor;
  • Wiring of motor output terminal(U/V/W) is consistent with motor (U/V/W) wiring; The sequence can't be wrong;
  • Do not put power cable and signal cable together, and keep a distance more than 30cm.
  • Do not switch servo power supply frequently; Otherwise, capacitor will be charged frequently inside the servo, and pre-charging circuit will be overloaded, resulting in performance degradation. Please keep switching frequency below 1 time per minute;
  • After the servo is powered off, there might still be residual high voltage inside servo. Only after power-off for 15 minutes and wait until the power indicator is off, can the wiring be executed.
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Definition and wiring description of power terminals
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Common DC Bus Cable Wiring
Last modified: 2025-07-14