During the operation of the OTC DAIHEN Welding Robot, if the system experiences abnormalities such as an abnormal drop in control power, a thermal exception, interference with other drive axes, or cooling fan stoppage, the teach pendant will usually display a hardware and control-level alarm in the 0250 to 0582 range. If these faults are not investigated promptly, they may cause serious operational safety hazards or damage to core components such as the reducer.
To help on-site engineers and mechanics quickly locate problems, we have organized the diagnostic terminology from the official maintenance manual to provide you with the following intuitive fault quick reference table. We recommend using the search function, entering the error code (e.g., 0250), to accurately obtain troubleshooting and processing suggestions.
I. OTC Robot Alarm Code Real-Time Quick Reference Table (0250-0582)
| Alarm Code | Fault Phenomenon | Fault Cause Analysis | Countermeasures & Solutions |
|---|---|---|---|
| 0250 | Inconsistency Exception or Control Power Exception Detected. | This exception occurs when there is an inconsistency in the feedback signal of the contactor or when a power drop occurs during operation. | When a control power voltage exception occurs, the internal power supply (switching power supply) of the control device may have failed. Please contact our maintenance service department. After eliminating the cause of the exception, reset the exception. |
| 0251 | Thermal Exception Occurred. | A thermal exception is detected on the multi-drive unit. Mostly, this exception occurs when the motor overheats due to heavy load. It is also possible that it is caused by poor contact of the connecting cable. | Reduce the load applied to the axis where the exception occurred. Wait until the motor cools down before performing an exception reset. If it cannot recover after stopping for a period of time, it may be due to poor cable contact. Please confirm the cable connection status. After eliminating the cause of the exception, reset the exception. |
| 0569 | Interference Exception With Other Drive Axes Occurred. | Other external axes are in a state where they cannot operate due to interference, or the control system is turned off. | When there is an interfering object, use the manual operation function to move to a safe position. When multiple external axes are connected, confirm the status of each connected external axis. If the servo is disconnected, restore it to normal. Reset the exception. |
| 0571 | Welding Machine Power Exception. | The power of the welding machine is abnormal. | Confirm whether there is an abnormality on the welding machine side and eliminate the abnormality according to the welding machine’s instruction manual. After eliminating the cause of the exception, reset the exception. |
| 0572 | External Axis Drive System Not Connected. | The machine controlling the external axis is not ready (power is not turned on / cable is not connected well, etc.). Or the machine controlling the external axis has failed. | Confirm whether the wiring and settings of the machine controlling the external axis are correct. If disconnected, connect it. If it cannot recover, a fault may have occurred. Please contact the repair service department. Reset the exception. |
| 0573 | Exception Occurred on External Machine. | For some reason, an exception signal was input to the main side. It is input when the exception input of the external machine is set to be valid. | Confirm the status of the external machine connected to the control panel (varies depending on the system). If the external machine has returned to its normal state, reset the exception. |
| 0575 | Interference Exception With Other Drive Axes Occurred. | When operating multiple external axes other than the robot, although an operation command is input to one external axis, other external axes with a linkage relationship cannot operate because the servo is disconnected, etc. This is an exception that occurs to prevent interference. | To be able to operate, first set the servos of all external axes to the ON state. Then reset the exception. |
| 0576 | Cooling Fan Stop Error. | The cooling fan in the power unit or servo control unit stopped due to clogging, etc. | Contact the repair service department to replace the fan. If it is clogged, eliminate the cause. Then turn on the power again. |
| 0577 | Regeneration Stopped. | The regeneration resistor may be disconnected, etc. | Turn off the power. Please use a digital meter, etc., to measure the resistance value of the regeneration resistor. The resistance value should be below 5Ω. If the resistance value is open, please contact our maintenance service department. After eliminating the cause of the exception, turn on the power again. |
| 0582 | Control Voltage Abnormal Drop Occurred. | This error will occur when the control power (DC voltage) of the drive unit drops. | Confirm whether the AC power voltage is within the specified range. After confirming no exception, turn on the power again. If this exception still occurs, it may be because the fuse inside the control power supply is blown and requires inspection and repair. Please contact our maintenance service department. |
II. Get Professional Technical Support and Maintenance Services
When the robot frequently displays the above hardware-level alarms, and routine reset attempts are ineffective, do not forcefully pull the robot arm or repeatedly force restarts, so as not to cause secondary irreversible damage.
Contact Anhui Oujie for Technical Guidance
- System Recovery & Hardware Repair: Manager Fang
- Service Hotline (WhatsApp): 180-9663-1656
- Official Email: ahojotc@gmail.com