During the operation of the OTC DAIHEN Welding Robot, if the system experiences abnormalities such as stop at stored position, conveyor belt synchronization conflict, vision sensor data error, I/O device communication interruption, or no response from arc welding power source, the teach pendant will usually display a hardware and control-level alarm in the 3700 to 4001 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., 3700), to accurately obtain troubleshooting and processing suggestions.
I. OTC Robot Alarm Code Real-Time Quick Reference Table (3700-4001)
| Alarm Code | Fault Phenomenon | Fault Cause Analysis | Countermeasures & Solutions |
|---|---|---|---|
| 3700 | Stopped at Storage Position | The robot accurately reached the specific coordinate position preset and registered by the storage position stop function. | Manually operate the robot to move it away from this position. This prompt is a normal function and does not require a special release. |
| 3701 | Option Not Set | The program called or used a software option function that is not currently activated or set in the system. | Enter the system parameters, correctly set and activate the relevant option parameter functions. No reset operation is required. |
| 3702 | Conveyor Belt Synchronization Request Incorrect | The conveyor belt synchronization method conflicts with the logic of the vision sensor setting, or the request was issued in the wrong mode. | Modify the constant setting or exit the vision sensor editing mode, standardize the operation timing. No reset operation is required. |
| 3703 | Measurement Number Not Set | When the system requested the execution of conveyor belt synchronization, the measurement number was not pre-specified and set in the program. | Modify the program parameters to set the correct measurement number, or check the relevant input signals. No reset operation is required. |
| 3704 | Buffer Full Cannot Store Measurement Results | The running speed of the conveyor belt is too fast or the signals are too dense, causing the internal data processing buffer to overflow. | Appropriately reduce the running speed of the conveyor belt to lessen the system calculation load. No reset operation is required. |
| 3782 | Cannot Obtain Posture Search Movement Data | The robot movement data corresponding to the basic data number transmitted from the vision sensor is not registered. | Check and confirm the vision sensor calibration and the basic data parameters for posture search. No reset operation is required. |
| 3800 | Received Abnormal Movement Data | The system received movement command data indicating an abnormal status sent by the host computer or sensor. | Check and confirm the working status of the PC/sensor transmitting the movement data and the correctness of the data format. |
| 3960 | I/O Connection Is Stopped | Due to physical disconnection or communication failure of external I/O devices, the system triggered emergency stop protection and cannot be started. | Check the I/O monitor to confirm the specific faulty node device. Repair the physical connection or restart the power supply for automatic recovery. |
| 4000 | Arc Welding Power Source Communication Timeout | The arc welding power source control board did not respond to the handshake/control commands issued by the robot. | Check the communication cable and plug, and reconnect the main power supply of the robot control device and the arc welding power source. |
| 4001 | Received Abnormal Data | The feedback data packet received from the arc welding power source has logical errors or gibberish interference. | Check the anti-interference shielding status of the communication cable, and reconnect the power supply of the controller and arc welding power source to reset the bus. |
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