Axis XX current sensor error or wiring disconnected. (U) (for E0x series controllers)

Error handling: Motor power OFF.
Error reset: Possible.

Description: The U-phase motor current detection circuit on the power module board is damaged, or there is a problem with the signal cable to the servo board.

Servo FPGA
Current feedback
Servo board
PMW
Current detection
Circuit
IPM
Each motor
Power block
Robot main body
Controller

Main causes:

1. A problem with the power block board.

2. A problem with the servo board.

3. Poor connector connection between the power block and servo board.

4. The separate harness connector has a poor connection.

5. A problem with the motor or a poor motor connector connection.

6. A problem with the power supply unit.

Countermeasures:

1. Replace the servo amplifier unit.

2. Replace the servo board.

3. Check whether the connectors between the power block and servo board are connected.

4. Replace the separate harness and machine harness.

5. Replace the motor.

6. Replace the power supply unit.