Summary of Common Faults and Solutions of Yaskawa Robots and Accessories (9-17)

09. Robot oil leakage?

Cause:

1. Improper maintenance;

2. Corrosive parts damage, etc.

Solution: Check the location of the oil leak and confirm the parts caused by the oil leak. It is possible to accurately determine the parts caused by oil leakage by checking drawings, etc.

10. Abnormal noise of the robot?

Causes and solutions: When there is a abnormal noise fault, it is necessary to go to the customer's site for diagnosis. By carefully inspecting the axis that judges the abnormal noise, the external influencing factors are discharged. Check the high torque, check the iron powder and other means to comprehensively judge the fault caused by abnormal noise.

11. Robot jitter?

Diagnostic process: Due to the difference between the jitter area and the amount of jitter, the diagnosis of jitter becomes a difficult point.

At this stage, the diagnostic method is to replace the amplifier, replace the motor, and replace the reducer one by one.

Improvement method: comprehensive judgment is made by current and voltage detection, iron powder concentration detection, robot gap detection and other methods.

Solution:

1. Check the operation of each axis;

2. Confirm the shaft caused by jitter;

3. Confirm whether it is an electrical or mechanical problem.

12. What is the trajectory error of the robot?

Cause:

1. Trajectory bias processing;

2. Phenomenon: Robot mechanical failure;

3. The base is unstable;

4. External tooling position deviation;

5. The workpiece is inconsistent;

6. The installation of welding guns and other tools is unstable.

Solution: This fault is a soft fault and requires a period of observation to accurately diagnose it.

Specific steps:

1. Do a good job of checkpoints and judge the possible causes;

2. Deal with each item from the possible causes;

3. Find the final cause for repair.

13. Where the robot is falling (very dangerous)?

Cause:

1. Improper maintenance;

2. Corrosive wear;

3. Fatigue wear.

Solution: Confirm the status of the fall, the amount of fall, and the alarm status.

Falling state: upper servo falling, not falling servo falling.

Falling volume: Falling all the time, or falling for a period of time.

Alarm status: drop alarm, drop no alarm.

14. Robot electrical fault?

Reason: The main reason is that the motor current is unstable, resulting in unstable motor output torque, resulting in jitter.

15. Is the motor current unstable?

The main reasons:

1. Motor failure;

2. Amplifier failure;

3. Faulty connection cable.

16. Mechanical failure?

Reason: Under the condition that the output torque of the motor is stable, the load of the transmission mechanical parts to the motor is unstable, resulting in jitter mechanical failure.

Solution: Find out whether it is a reducer failure or a bearing failure, and then solve it in a targeted manner.

17. Servo tracking error alarm?

Cause:

1. Communicate → consult the status of the operation and the status of the alarm;

2. Diagnosis→ through the diagnosis of high torque and on-site conditions;

3. Maintenance → make a maintenance plan.

Solution:

1. Confirm that the brake is open (you can hear the sound of the brake opening);

2. Check the oil condition (open the oil outlet for sampling and inspection);

3. Remove the motor for diagnosis (remove the motor and rotate the electricity separately).

Summary of Common Faults and Solutions of Yaskawa Robots and Accessories (9-17)

Summary of Common Faults and Solutions of Yaskawa Robots and Accessories (9-17)

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