Yaskawa Error Code A910 Link

Review: Yaskawa error code A910 — "LINK"

Executive Summary

Error Code: A910
Official Description: Overspeed (at Start)
Severity: Medium to High (Prevents operation but typically indicates a configuration or hardware mismatch).
Category: Speed Control / Feedback Loop

In simple terms, this error occurs when the Yaskawa VFD (Variable Frequency Drive) attempts to start the motor, but the speed sensor (Encoder or PG) detects that the motor is already moving—or moving backward—faster than the allowable threshold. It can also happen if the drive commands a stop, but the motor drifts due to external forces.

4. Troubleshooting & Diagnostic Steps

When A910 appears on the Digital Operator, follow this diagnostic workflow:

Step 4: Direction Logic Check

Cause: The motor is spinning one way, but the drive commands the other.
Solution: Check parameter F1-02. If you reverse the motor wiring (U, V, W), you must also change the PG rotation setting (F1-02) to match, or the drive will see feedback in the wrong direction.

When to Call Yaskawa Support

You have exhausted all hardware and parameter checks. Contact Yaskawa Technical Support (1-800-YASKAWA in the US) if:

A910 converts to F910 (Fault) immediately upon power-up.
The drive control board shows visible burn marks near the option slot.
You have replaced the option card twice and the error persists (points to a backplane issue).

Step 2: Measure Actual Load

Check parameter U1-03 (Output Current) or U1-04 (Output Voltage).

Is the output current higher than the motor nameplate rating?
If yes, the load is genuinely too heavy for the motor.
Action: Reduce the load, lower the speed setpoint, or verify the mechanical system is not binding (e.g., a pump running against a closed valve).

Disclaimer

*This document is for reference only. Always consult the specific Technical Manual for your Yaskawa drive model (e.g., A1000, V1000, GA700

The Yaskawa error code Overload Warning . It serves as a precursor to more severe overload alarms like A.710 (High Load) or A.720 (Low Load). If this warning is ignored, the drive will eventually trigger a hard fault and stop the motor. Common Causes Mechanical Stress

: Excessive load on the motor due to mechanical friction or a physical obstruction. Operating Conditions

: The cycle time or load exceeds the motor's rated capacity. Wiring Issues

: Incorrect or loose contact in the servomotor or encoder wiring. Environmental Factors

: High ambient temperature within the SERVOPACK panel (exceeding 55°C). Parameter Settings : The overload warning level ( ) is set too low for the current application. Recommended Troubleshooting Steps Inspect Mechanics

: Check for any mechanical issues causing excessive torque or friction. Verify Wiring

: Ensure all cables between the motor, encoder, and SERVOPACK are securely connected and free of damage. Adjust Parameters : Review the

parameter to ensure the overload warning level is appropriate for your operating conditions. Evaluate Capacity yaskawa error code a910 link

: If the load is consistently high, consider reducing the operation intensity or upgrading to a higher-capacity motor. Check Cooling

: Verify that the panel cooling fans are functional and that the internal temperature is within specified limits.

If these steps do not clear the warning, it may indicate an internal failure within the specific parameter adjustment steps for a particular Yaskawa series like Sigma-5 or Sigma-7? 6.3 Drive Alarms, Faults, and Errors

The Yaskawa A.910 error code indicates an Overload Warning. This is a cautionary status that precedes more critical overload alarms like A.710 (Instantaneous Overload) or A.720 (Continuous Overload). If the underlying cause is not addressed, the drive will eventually trip a full alarm to prevent the servomotor from overheating. Common Causes

Mechanical Load Issues: The motor is encountering more physical resistance than it is designed to handle, often due to binding, friction, or an oversized load.

Incorrect Wiring: Faulty contacts or incorrect wiring between the SERVOPACK, servomotor, or encoder can trigger this warning.

Operating Conditions: The motor is operating for extended periods at torques that exceed its ratings, or the starting torque required is too high.

Parameter Settings: The overload warning level (parameter Pn52B) might be set too low or is unsuitable for the current application.

Environmental Factors: Excessive heat within the SERVOPACK panel (above ) can contribute to overload conditions. Troubleshooting and Remedies

Check Mechanical Systems: Inspect the machinery for any physical obstructions, mechanical wear, or binding that could be increasing the motor's workload.

Verify Wiring: Ensure all power and encoder cables are securely connected and free of damage. Use the Yaskawa troubleshooting guide to verify correct pinouts.

Adjust Parameters: If the mechanical load is within spec, check parameter Pn52B to ensure the warning threshold is appropriate for your operation.

Review Motor Capacity: If the load is consistently high, you may need to reconsider the load requirements or upgrade to a motor with a higher capacity. Review: Yaskawa error code A910 — "LINK" Executive

Cooling: Ensure the SERVOPACK has adequate ventilation and that the internal cabinet temperature is maintained at safe levels. Reference for Related Alarms A.910 Overload Warning Pre-alarm (Warning) A.710 Instantaneous Overload Critical Alarm A.720 Continuous Overload Critical Alarm

For more detailed technical specifications on detection timing, refer to the Yaskawa Sigma-7 Manual. A.910 fault in Yaskawa Sigma 7 servo drive - Click2Electro

The Yaskawa error code A910 indicates a "Communications error (serial communications)" — specifically a transmission data fault between the drive and the keypad, optional digital operator, or serial communication link.

Key info for “A910 link”:

Cause:
The serial communications link has failed or is intermittent. This often happens with the RS-422/RS-485 connection to a remote keypad (like a JVOP-180) or a host controller (PLC, HMI).
Common scenarios:
- Loose or broken wiring on terminals R+, R-, S+, S- (for MEMOBUS/Modbus).
- Noise interference on the communication line.
- Wrong communication parameter settings (e.g., baud rate, parity, slave address mismatch).
- Using an incompatible operator or cable.
- Damaged drive communication port.
Troubleshooting steps for the link:
1. Power cycle the drive – transient faults may clear.
2. Check wiring – ensure twisted-pair shielded cable is used, shield grounded only at one end.
3. Verify termination resistors – set correctly for the network.
4. Test with a local keypad (directly mounted on drive) – if A910 clears, the link/cable/remote device is the problem.
5. Reduce electrical noise – separate comm lines from power cables, use ferrite cores.
6. Check settings – o1-05 (LCD contrast not related), but focus on F6-xx (for digital operator), H5-xx (for serial comm). Ensure parity, stop bits, baud rate match all devices.
7. Replace cable – if damaged.
If fault persists:
The drive’s serial port may be damaged, requiring drive repair/replacement.

For a precise solution, note your Yaskawa drive model (e.g., GA800, GA500, U1000, V1000, A1000, J1000) – A910 behavior is nearly identical across modern Yaskawa AC drives, but terminal locations and parameter numbers can vary slightly.

Would you like the exact parameters to check for your specific model?

Understanding and Troubleshooting Yaskawa Error Code A910 Link Issues

Yaskawa is a renowned Japanese manufacturer of industrial automation products, including variable frequency drives (VFDs), servo drives, and robots. Their products are widely used in various industries, such as manufacturing, automotive, and food processing. However, like any complex electronic device, Yaskawa products can sometimes encounter errors, which can disrupt production and cause significant downtime. One common error code that users may encounter is the A910 link error.

In this article, we will provide an in-depth analysis of the Yaskawa error code A910 link, its causes, symptoms, and troubleshooting steps. We will also offer preventive measures to minimize the occurrence of this error and provide guidance on when to seek professional help. Cause: The motor is spinning one way, but

What is Yaskawa Error Code A910 Link?

The A910 link error is a specific fault code displayed on Yaskawa drives, particularly on their VFDs and servo drives. This error code indicates a communication link error between the drive and the controller or other devices connected to the network.

Causes of Yaskawa Error Code A910 Link

Several factors can contribute to the A910 link error:

Communication cable issues: Faulty, damaged, or improperly connected communication cables can disrupt the link between devices.
Network configuration errors: Incorrect network settings, such as IP addresses, subnet masks, or baud rates, can prevent devices from communicating with each other.
Controller or drive configuration: Misconfigured controller or drive settings can lead to communication errors.
Device compatibility issues: Incompatibility between devices from different manufacturers or with different communication protocols can cause link errors.
Noise and electrical interference: Electromagnetic interference (EMI) or radio-frequency interference (RFI) can affect communication signals and cause errors.
Firmware or software issues: Outdated or corrupted firmware or software can lead to communication problems.

Symptoms of Yaskawa Error Code A910 Link

When the A910 link error occurs, you may notice the following symptoms:

The drive or controller displays the A910 error code.
Communication between devices is lost, and data transmission is interrupted.
The system may experience erratic behavior, such as unexpected stops or incorrect operation.
Alarms or warnings may be triggered, indicating a communication error.

Troubleshooting Yaskawa Error Code A910 Link

To resolve the A910 link error, follow these step-by-step troubleshooting procedures:

Check communication cables: Verify that all communication cables are securely connected, not damaged, and meet the required specifications.
Verify network configuration: Ensure that network settings, such as IP addresses and baud rates, are correctly configured for all devices on the network.
Check controller and drive settings: Review controller and drive settings to ensure they are compatible and properly configured for communication.
Test device compatibility: Verify that all devices on the network are compatible with each other and support the same communication protocol.
Minimize noise and electrical interference: Ensure that all devices are properly grounded, and consider using noise-reducing filters or shielding.
Update firmware and software: Check for firmware or software updates and install the latest versions to ensure compatibility and resolve known issues.

Preventive Measures to Minimize A910 Link Errors

To reduce the occurrence of A910 link errors, consider the following preventive measures:

Regularly inspect and maintain communication cables: Check cables for damage or wear and replace them as needed.
Verify network configuration: Periodically review network settings to ensure they are correct and up-to-date.
Monitor system performance: Regularly check system performance and adjust settings as needed to prevent errors.
Use high-quality devices and components: Choose devices and components from reputable manufacturers to ensure compatibility and reliability.
Keep firmware and software up-to-date: Regularly update firmware and software to ensure you have the latest features and bug fixes.

When to Seek Professional Help

If you are unable to resolve the A910 link error using the troubleshooting steps provided, it may be time to seek professional help. Consider contacting:

Yaskawa support: Reach out to Yaskawa's technical support team for guidance on troubleshooting and repair.
Authorized service providers: Contact authorized Yaskawa service providers for professional repair or maintenance services.
Control system integrators: Consult with control system integrators who have experience with Yaskawa products and communication networks.

In conclusion, the Yaskawa error code A910 link can be a challenging issue to resolve, but by understanding its causes, symptoms, and troubleshooting procedures, you can minimize downtime and ensure smooth operation of your industrial automation system. By following preventive measures and seeking professional help when needed, you can reduce the occurrence of A910 link errors and ensure reliable communication between devices.

The Yaskawa A.910 error code acts as a preemptive overload warning, signaling potential issues before a full system shutdown occurs. Common causes include mechanical binding, incorrect wiring, or parameter settings that require adjustment. For troubleshooting guides tailored to different Yaskawa series, visit Click2Electro. A.910 fault in Yaskawa Sigma 7 servo drive - Click2Electro

Here’s a quick guide to the Yaskawa error code A910 (often seen on Yaskawa V1000, J1000, GA700, GA800, and other A1000-series drives):