FANUC SP9020 EXCESS OFFSET CURRENT V

Amplifier alarm number: 20

FANUC SP9020  RReplace the Spindle Amplifier (SP).

FANUC SP9020 Description

Abnormality in a Spindle Amplifier(SP) component is detected. (Theinitial value of the V phase current detection circuit is abnormal.)

FANUC SP9020 alarm, i.e. “V-phase current offset is too large”, is usually related to abnormal spindle amplifier components, especially abnormal initial value of V-phase current detection circuit. Here are the steps and guidelines for solving FANUC SP9020 alarm:

### Solution steps

– **Check spindle amplifier components**: First check whether there is obvious physical damage or connection problem with the spindle amplifier.

– **Replace spindle amplifier**: If the inspection finds abnormal spindle amplifier components, such as abnormal initial value of V-phase current detection circuit, the spindle amplifier should be replaced.

### Preventive measures

– Regularly check and maintain the spindle amplifier to ensure its normal operation.

– Pay attention to the status indicator of the spindle amplifier to detect and deal with abnormalities in time.

### Alarm information setting

– In the FANUC system, user alarm information, including alarm number and description, can be set through the system menu.

### Robot operation guide

– **Power on**: Make sure all safety devices are normal, then turn on the power switch.

– **Power off**: Stop the robot through the pause button, then turn off the power switch.
– **Teaching mode**: Select joint coordinates, rectangular coordinates or tool coordinates for teaching as needed.
– **Set teaching speed**: Adjust the teaching speed as needed to ensure safety.

Through the above steps, the FANUC SP9020 alarm problem can be effectively solved and the normal operation of the robot can be ensured. If the problem persists, it is recommended to contact a professional maintenance service for further inspection and repair.