Yaskawa Error Code A910 Exclusive Extra Quality

by Jiří {x2} Činčura

Yaskawa Error Code A910 Exclusive Extra Quality

Based on Yaskawa documentation (specifically for the GA500, GA700, A1000, and V1000 series drives), Error Code A910 indicates an Overload Warning.

Here is the exclusive breakdown of the error, its causes, and the solution steps.

Conclusion

Yaskawa Error Code A910 is “exclusive” because it points directly to a hardware failure in the drive’s charging path. While software errors can often be tuned out, A910 demands a hardware-level response. If you see this code, plan for drive replacement or send the unit to a Yaskawa-authorized service center. Do not attempt to bypass the pre-charge circuit – doing so can cause explosive capacitor failure.

Need immediate help? Contact Yaskawa Dr Support with the drive model number and a DC bus voltage reading.

In the world of high-precision industrial automation, encountering a fault can bring productivity to a grinding halt. If your Yaskawa Sigma-7 Go to product viewer dialog for this item. or Go to product viewer dialog for this item.

series servo drive is displaying A.910, you are seeing an Overload Warning.

While this isn't a hard "fault" that will immediately trip the drive, it is an urgent alert that the system is operating dangerously close to its thermal or mechanical limits. Ignoring an A.910 warning typically leads to an A.710 (Overload: High Load) or A.720 (Overload: Low Load) fault, which will shut down your motor to prevent permanent damage. What Does the A.910 Error Code Mean?

The A.910 code indicates that the drive's internal algorithms have detected an operation that exceeds the rated overload protection characteristics of the motor. Essentially, the drive is "warning" you that if current conditions continue, the motor or the SERVOPACK will overheat. Common Causes of the A.910 Alarm

Understanding why this warning appears is the first step toward a permanent fix. Common culprits include:

Excessive Mechanical Load: Friction in the bearings, a jammed conveyor, or a misaligned gearbox can force the motor to draw more current than intended.

Aggressive Motion Profiles: Rapid acceleration and deceleration cycles that exceed the motor's duty cycle will trigger this warning.

Wiring Issues: Poor contact or incorrect wiring between the SERVOPACK and the motor or encoder can cause erratic readings or inefficient power delivery.

Incorrect Parameter Settings: The overload warning level is defined by parameter Pn52B. If this is set too low for your specific application, you may get "nuisance" alarms.

Ambient Temperature: High temperatures inside the electrical panel (above

) reduce the drive's ability to dissipate heat, leading to premature overload warnings. Step-by-Step Troubleshooting Guide

If you are facing an A.910 error, follow these steps to diagnose and resolve the issue: 1. Inspect the Mechanical System

Before diving into software, check the hardware. Disconnect the motor from the load and rotate the shaft by hand. If you feel resistance or "binding," the problem is mechanical. Lubricate joints, check belt tension, and ensure there are no obstructions in the machinery. 2. Verify Wiring Integrity

Ensure all connections at the U, V, and W terminals are tight. Check the encoder cable for any signs of damage or interference. Poor encoder signals can cause the drive to "hunt" for position, increasing the current draw and triggering an overload. 3. Adjust Operating Conditions

If the mechanical system is clear, look at your cycle times. Try reducing the acceleration/deceleration rates or the total duty cycle. You can use the Yaskawa SigmaWin+ software to monitor the Effective Torque Reference to see exactly how hard the motor is working. 4. Check Parameter Pn52B

By default, the A.910 warning is often set to trigger when the load reaches 20% of the maximum overload capacity. If your application naturally runs "hot" but within safe limits, you may need to increase the value of Pn52B (Overload Warning Level) to a more suitable percentage. 5. Environmental Control

Ensure your control cabinet has proper ventilation. If the drive's internal fan has failed, you will see a FAn alarm or an A.910 warning as the heatsink temperature rises. If the fan is clogged, use compressed air to clean the heatsink fins. When to Replace the Hardware

If you have verified the wiring, parameters, and mechanical load, and the A.910 warning persists even when the motor is disconnected, the Go to product viewer dialog for this item. yaskawa error code a910 exclusive

itself may have a faulty current detection circuit. In these cases, the internal board may require repair or replacement from an authorized center like Precision Zone. Yaskawa GA700 Manual Fault Codes Explained & Solutions

The Yaskawa error code A910 (often displayed as A.910) indicates a "Momentary Power Loss" or "Undervoltage during Run" fault on Yaskawa AC drives (e.g., A1000, V1000, J1000, GA500, GA800 series).

If Fault Persists

If all external checks pass and the fault remains even with stable input power, the drive’s DC bus sensing circuitry may have failed — contact Yaskawa support or an authorized repair center.

On a Yaskawa Sigma-7 servo drive, the A.910 error code specifically indicates an Overload Warning. This code is exclusive in the sense that it acts as a preemptive alert, appearing before the drive triggers a more severe, machine-stopping alarm like A.710 or A.720. What is Happening?

The drive has detected that the motor is operating near its thermal or torque limits. If the current operating conditions continue, the drive will eventually shut down to prevent hardware damage. Common Causes

Mechanical Stress: Increased friction or a physical jam in the machinery is forcing the motor to work harder than usual.

Operating Cycle: The motor's duty cycle (how long it runs vs. how long it rests) is exceeding its rated capacity.

Parameter Settings: The "Overload Warning Level" (specifically parameter Pn52B) may be set too low for your specific application.

Wiring/Hardware: Potential faulty contact in the motor or encoder wiring, or a rare failure within the Yaskawa SERVOPACK itself. How to Resolve It

Inspect the Mechanics: Check for physical obstructions or lack of lubrication in the system the motor is driving.

Review the Duty Cycle: If possible, reduce the motor's speed or increase the dwell (rest) time between movements.

Adjust Pn52B: You can modify the overload warning level to be more suitable for your operation, provided it still protects the motor from actual damage.

Verify Capacity: If this warning is frequent in a new setup, the motor may be undersized for the load it is carrying.

Note for Robot Users: If you are using a Yaskawa Motoman robot (like the NX100 or FS100) and see code 0910, this is a different issue entirely—typically a CPU Error related to communication between internal boards.

Is this error occurring on a standalone servo drive or as part of a larger Motoman robot system? FS100 ALARM CODE 0910 CPU ERROR (CPU-201R)

FS100 ALARM CODE 0910 CPU ERROR (CPU-201R) – Yaskawa Motoman. Yaskawa Knowledge Center NX100 ALARM CODE 0910 CPU ERROR (NCP01)

4. How to Clear the Fault

Once the physical cause is resolved or parameters are corrected:

  1. The A910 warning may persist until the drive's internal thermal model cools down.
  2. If the drive did not trip (stop), the warning light may turn off automatically after current returns to normal.
  3. If the drive tripped, cycle the power or press the RESET button (assuming the fault has cleared).

Summary Checklist:

  1. Check for mechanical jams.
  2. Match E2-01 to Motor Nameplate FLA.
  3. Ensure motor is not overheating physically.

The Yaskawa error code A.910 is an Overload Warning for servo drives, typically found in the Sigma-3, Sigma-5, and Sigma-7 series. It serves as a precursor to more severe "hard" overload alarms like A.710 (instantaneous maximum load) or A.720 (continuous maximum load). A.910 Overload Warning Summary

Definition: This warning triggers when the drive detects it is nearing its overload limit. If ignored, the drive will eventually shut down with a full overload fault to prevent hardware damage. Primary Causes:

Mechanical Overload: The load on the motor exceeds its rated capacity, or there is physical resistance/jamming in the machinery. Based on Yaskawa documentation (specifically for the GA500,

Wiring Issues: Incorrect or loose motor/encoder wiring can cause irregular current draws.

Environmental Factors: Excessive ambient temperatures (above 40°C–55°C) inside the SERVOPACK panel.

Parameter Settings: The overload warning level (often parameter Pn52B) may be set too low for the application. Troubleshooting & Corrective Actions Using Stall Prevention to Suppress Overloads - Yaskawa

In Yaskawa Sigma-series servo drives (including Sigma-3, 5, and 7), the A.910 error code indicates an Overload Warning.

This is a "minor fault" or pre-alarm meant to alert you that the motor is approaching its thermal limit. If left unaddressed, the drive will eventually escalate to a hard fault like A.710 (Instantaneous Overload) or A.720 (Continuous Overload) and shut down. Common Causes

Mechanical Binding: Physical obstruction or excessive friction in the machine's moving parts.

Operating Beyond Capacity: The load or duty cycle exceeds the motor's rated torque.

Incorrect Wiring: Faulty contact or miswired power/encoder cables.

Parameter Settings: The overload warning level (Pn52B) is set too low for the current application.

High Ambient Temp: Excess heat inside the SERVOPACK panel (typically should be below 55°C). Recommended Solutions

Inspect Mechanics: Check for any physical jams or lubrication issues causing extra drag.

Verify Wiring: Ensure the motor and encoder cables are securely connected and not damaged.

Check Parameters: Review the Pn52B parameter to ensure the warning threshold is appropriate for your operation.

Cooling: Check if panel fans are working or if the heat sink is obstructed.

Re-evaluate Sizing: If the error persists under normal operation, you may need a motor with higher torque capacity.

For detailed technical specs, you can refer to the official Yaskawa Sigma-7 Troubleshooting Guide or explore the Sigma-5 Alarm Table for related codes. Yaskawa Servo Drive Alarm Codes Guide | PDF - Scribd

Yaskawa A.910 error code Overload Warning . It is not a hard "alarm" that will immediately stop your machine, but rather a final warning that you are about to trigger a full (Instantaneous Maximum Load) or (Continuous Overload) alarm. Yaskawa.eu.com

Think of it as the motor's "check engine" light specifically for physical stress. 🛠️ What is happening?

The drive has calculated that the motor is working too hard for too long. If you ignore this warning and continue operation, the drive will eventually shut down with a hard alarm to protect the motor from burning out. Yaskawa.eu.com Common Causes Mechanical Bind/Obstruction:

Something is physically stopping the motor or making it harder to turn (e.g., a jammed bearing, lack of lubrication, or a physical crash). Incorrect Wiring:

Faulty contacts or incorrect motor/encoder wiring can cause the drive to misread the load. Aggressive Duty Cycle: Install a line reactor or power conditioning equipment

The machine is being asked to move too fast, too often, or carry a load heavier than the motor’s rated capacity. Parameter Settings: The warning level might be set too low in parameter

, causing it to trigger even during normal (but heavy) operation. 【安川電機】e-メカサイト ✅ Immediate Troubleshooting Steps Monitor Cumulative Load: Check the drive's monitor mode to see the Cumulative Load Ratio

. If it is consistently over 100%, the motor is undersized or the cycle is too demanding. Test Without Load:

If possible, disconnect the motor from the machine and run it "naked." If the A.910 still appears, the issue is likely electrical (wiring or the drive itself) rather than mechanical. Check Mechanics:

Manually rotate the machine (with power off) to feel for stiff spots, grinding, or resistance. Adjust Parameters (Carefully): You can delay the A.910 warning by increasing the value in , but this

prevent the final A.710/720 alarm from happening—it just makes the warning come later. 【安川電機】e-メカサイト 📖 The "Proper Story" (What to expect) If you see powering on

the machine, it often means the drive "remembers" it was in an overload state before it was shut down and is warning you that the motor hasn't had enough time to cool down yet. 【安川電機】e-メカサイト If you are using series drives, you can specifically look at parameter

(Excessive Position Error Warning Level) if the overload seems tied to the moment the Servo turns ON. Yaskawa.eu.com If you'd like to narrow this down, could you tell me: Does the error happen immediately at power-on during a specific move of Yaskawa drive are you using (e.g., Sigma-5, Sigma-7)? Has the machine recently been serviced or crashed?

A.910が発生しました。原因を教えてください。- サーボ

Understanding Yaskawa Error Code A910: Exclusive Access

Yaskawa is a well-known Japanese company that specializes in the production of industrial robots, servo drives, and other automation equipment. Their products are widely used in various industries, including manufacturing, automotive, and food processing. However, like any complex machinery, Yaskawa devices can sometimes encounter errors, one of which is the A910 error code. This article aims to provide an in-depth look at the A910 error code, specifically focusing on its meaning, causes, and troubleshooting steps.

What is Yaskawa Error Code A910?

The A910 error code is a specific fault code generated by Yaskawa's servo drives and robots. When this error occurs, it typically indicates that there is an issue related to the system's exclusive access. The error code A910 suggests that the device is experiencing a problem with accessing a particular resource or function that is currently locked or reserved by another process.

Causes of Yaskawa Error Code A910

Several factors can trigger the A910 error code. Some of the most common causes include:

  1. Exclusive access conflict: When multiple processes or programs attempt to access the same resource or function simultaneously, it can lead to a conflict, resulting in the A910 error.
  2. System configuration issues: Incorrect configuration or setup of the device can cause the A910 error.
  3. Communication problems: Faulty or loose communication cables, incorrect communication settings, or conflicts with other devices on the network can contribute to the error.
  4. Software or firmware issues: Outdated or corrupted software or firmware can lead to compatibility problems, causing the A910 error.

Troubleshooting Yaskawa Error Code A910

To resolve the A910 error code, follow these troubleshooting steps:

  1. Check system configuration: Verify that the device is properly configured and set up according to the manufacturer's instructions.
  2. Review communication settings: Ensure that communication settings, such as baud rates and parity, are correct and match those of other devices on the network.
  3. Disable and re-enable the device: Try disabling and re-enabling the device to reset any temporary errors.
  4. Update software and firmware: Ensure that the device's software and firmware are up to date, as newer versions may resolve compatibility issues.
  5. Check for conflicts with other devices: If multiple devices are connected to the same network, try isolating the device experiencing the error to determine if there are any conflicts.
  6. Consult the user manual: Refer to the device's user manual or technical documentation for specific troubleshooting guides related to the A910 error code.

Preventing Future Occurrences

To minimize the likelihood of encountering the A910 error code in the future:

  1. Regularly update software and firmware: Stay up to date with the latest software and firmware releases to ensure compatibility and resolve known issues.
  2. Perform routine maintenance: Regularly inspect and maintain the device, including checking for loose connections and ensuring proper ventilation.
  3. Monitor system performance: Continuously monitor the device's performance and adjust settings as needed to prevent errors.

Conclusion

The Yaskawa error code A910 is a specific fault code related to exclusive access issues. By understanding the causes and following the troubleshooting steps outlined in this article, users can effectively resolve the error and prevent future occurrences. Regular maintenance, software updates, and monitoring system performance are essential to ensuring the optimal operation of Yaskawa devices. If the issue persists or requires further assistance, it is recommended to contact a Yaskawa support specialist or authorized service provider for additional guidance.