During the operation of the OTC DAIHEN Welding Robot, if the system experiences abnormalities such as file copy conflict, exceeding the maximum follow angle range, invalid recording point for pressure synchronization, or receiving various external stop/emergency stop signals, the teach pendant will usually display a hardware and safety protection-level alarm in the 2089 to 2106 range. If these faults are not investigated promptly, they may cause serious operational safety hazards or damage peripheral devices.
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., 2089), to accurately obtain troubleshooting and processing suggestions.
I. OTC Robot Alarm Code Real-Time Quick Reference Table (2089-2106)
| Alarm Code | Fault Phenomenon | Fault Cause Analysis | Countermeasures & Solutions |
|---|---|---|---|
| 2089 | Same Device Cannot Be Processed | Attempted to copy to the same device with the same file name, resulting in a file conflict. | Change the file name or device, and perform the copy operation again. Press any key to release the error. |
| 2090 | Exceeded Maximum Follow Angle Range | This error is issued when the robot tries to follow at an angle greater than the maximum follow angle. | Check the pressure synchronization parameters, and then reset the exception. |
| 2091 | Invalid Recording Point for Pressure Synchronization Step | An error occurs when the position of the pressure interlock wait step is different from the synchronization step. | Confirm the recording point of the pressure synchronization step, and then reset the exception. |
| 2092 | Cannot Start From Current Step | This error occurs when a regeneration start is performed from a pressure synchronization step. | Perform a regeneration start from a step other than the pressure synchronization step, and then reset the exception. |
| 2093 | Pressure Brake Synchronization Invalid | When pressure is not selected by the conveyor belt type, this error occurs if a function related to pressure brake is executed. | Set the conveyor belt form to pressure, and then reset the exception. |
| 2100 | Specified Channel Number or Slave Node Number Not In Use | The channel number or slave node number specified by FN312 or R502 is not in use. | Confirm the specified channel number or slave node number, and then reset the exception. |
| 2101 | Stop Button or External Stop Signal Input | Although the external stop signal has been input, this exception occurs when the start command is input. | Release the stop signal and clear it with the reset key. |
| 2103 | Emergency Stop Button or External Emergency Stop Input | When the operation preparation input signal or the external operation preparation input signal has been input while the emergency stop button or the external emergency stop signal is being input. | Release the emergency stop button and external emergency stop signal, and then reset the exception. |
| 2104 | Operation Preparation Disconnect Button or External Operation Preparation Disconnect Input | Detected when the operation preparation input signal has been input while the operation preparation disconnect button or the external operation preparation disconnect signal is being input. | Release the operation preparation disconnect button and external operation preparation disconnect signal, and then reset the exception. |
| 2106 | Started or Executed Before Servo Turned On | Because it was started or axis operation was performed before the electromagnetic switch (MSHP) was turned on, it cannot operate. | It should be started after the electromagnetic switch (MSHP) is turned on, and then reset the exception. |
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


