Yaskawa Error Code A910 !full! Link

In the world of high-precision motion control, the Yaskawa error code A.910 is a specific warning signal used primarily in Sigma-5 and Sigma-7 series servo drives.

While it may seem urgent, A.910 is technically a warning (minor fault) rather than a hard alarm. It serves as a preemptive notification that the system is approaching an overload condition. Ignoring this warning typically leads to a full system shutdown via A.710 (Instantaneous Overload) or A.720 (Continuous Overload) alarms. What Does Error Code A.910 Mean?

The A.910 error signifies an Overload Warning. By default, Yaskawa drives trigger this warning when the system reaches 20% of the time required to hit a critical overload alarm threshold. It is a safety feature designed to protect the servomotor from overheating or mechanical damage by giving operators time to adjust the load or duty cycle before a shutdown occurs. Primary Causes of A.910

Several factors can trigger this warning, ranging from mechanical fatigue to improper parameter configuration:

Excessive Mechanical Load: The most common cause is a load that exceeds the motor's rated torque capacity due to mechanical binding or increased friction in the system.

Aggressive Duty Cycles: High-frequency acceleration and deceleration or operating at peak torque for extended periods can build up heat faster than the motor can dissipate it.

Improper Parameter Settings: The threshold for this warning is controlled by parameter Pn52B (Overload Warning Level). If this is set too low (e.g., 10–20%), the warning may appear prematurely during normal operation.

Wiring or Feedback Issues: Faulty contact in the motor or encoder cables can cause the drive to "misread" the torque requirements.

Capacity Mismatch: If the SERVOPACK and servomotor capacities are not properly matched, the drive may struggle to maintain current levels, triggering an early warning. Troubleshooting & Remediation Steps

To resolve an A.910 error and prevent it from escalating to a hard stop, follow these diagnostic steps: Yaskawa.eu.com Σ-7C SERVOPACK - Troubleshooting Manual

Yaskawa error code A.910 Overload Warning commonly found in the Sigma-5 and Sigma-7 servo drive series. It acts as a preemptive alert, indicating that the system is approaching a full overload alarm (A.710 or A.720), which would shut down the drive. Core Meaning

This code signals that the motor is operating at a load or torque level that exceeds its continuous rating for a significant period. If ignored, the drive will eventually trip to protect the hardware. Yaskawa America Primary Causes and Solutions Mechanical Overload:

The most common cause is excessive physical load or a mechanical jam.

Inspect the machinery for friction, binding, or unexpected resistance. Incorrect Parameter Settings: The "Overload Warning Level" (Parameter ) might be set too low for your specific application. Verify and adjust Pn52B to a suitable level as per the Yaskawa Sigma-7 Product Manual Wiring Issues:

Poor contact or incorrect wiring between the servomotor and the encoder can trigger false or early warnings.

Ensure all motor and encoder cables are securely connected and correctly wired. Capacity Mismatch:

The motor may be undersized for the required operation/duty cycle.

Reconsider the operating conditions or increase the motor/drive capacity. Hardware Failure: In rare cases, internal failure of the itself can cause this error.

If mechanical and wiring checks pass, the SERVOPACK may need replacement. Summary Table for Quick Reference Alarm Name Overload Warning Related Alarms A.710 (Instantaneous Overload), A.720 (Continuous Overload) Critical Parameter Pn52B (Overload Warning Level) Typical Recovery

Inspect mechanics, verify wiring, or cycle power if intermittent

If the error persists after checking these areas, would you like to troubleshoot a specific Yaskawa drive model or look into parameter adjustment steps AI responses may include mistakes. Learn more Yaskawa Servo Drive Alarm Codes Guide | PDF - Scribd

Here is the detailed content regarding the Yaskawa Error Code A910.

This error appears primarily on Yaskawa V1000, J1000, U1000, and GA800 series drives.

Frequently Asked Questions (FAQ) about A910

A Story: The Night Shift at Clearwater Mill

The Clearwater Mill recycled cardboard into shipping boxes. The entire plant ran on three shifts, but the 2:00 AM shift—the "graveyard"—was the skeleton crew. It was a world of shadows, hissing pneumatics, and the constant, low hum of Yaskawa drives.

Jenna, the senior technician, was sipping burnt coffee in the control room when the alarm panel lit up. Line 3 was down.

“What’s it say?” crackled the foreman, Sal, over the radio.

Jenna squinted at the small LCD screen on the drive for the main corrugator feed belt. A910 – UV.

“Undervoltage,” she said. “But that doesn’t make sense. The lights aren't even flickering.”

She grabbed her multimeter and a heavy-duty flashlight, then walked the catwalk toward the motor control center (MCC). The sound of the idle plant was eerie—the absence of the 50-ton corrugator’s rhythm made the air feel thick.

When she opened the MCC door, she saw the problem instantly. The main disconnect for the drive was on. The fuses looked fine. But the pilot light on the small control transformer was dark.

Dead. No 24V control power.

She traced the wire back to a junction box near the ceiling, where a bundle of conduit entered. The box was warm. Too warm for 2:00 AM in an unheated part of the mill.

“Sal, I need a lift,” she said.

Ten minutes later, standing on a scissor lift, she popped the lid off the junction box. A faint smell of ozone hit her. There, wrapped around a ground screw like a black snake, was a melted wire nut. The incoming 480V leg L2 had vibrated loose over five years of non-stop operation. It wasn’t completely off—it was floating, arcing just enough to keep the lights on in the office but dropping the voltage on the drive’s main circuit below 350V.

The drive was seeing the power drop, throwing A910 as a warning: “Don’t even think about starting the motor. I don’t have the muscle.”

Jenna killed the main breaker, stripped the fried wire, put on a new terminal lug, and torqued it down. She closed the box, lowered the lift, and walked back to the drive.

“Cycle power,” she said to Sal.

He reset the breaker. The drive’s LED screen flickered, went dark for a second, then lit up a solid green.

READY.

“Hit it,” Jenna said.

The 50-ton corrugator groaned, then roared to life. The floor vibrated. Boxes began flying down the line.

Sal’s voice crackled one last time. “A910. Just a loose wire.” yaskawa error code a910

“Always is,” Jenna replied, finishing her cold coffee. “The drive just has good manners. It tells you it’s sick before it tries to run a marathon.”

The Yaskawa error code A.910 is an Overload Warning that indicates a drive is nearing its physical limits. Unlike a hard "fault" that immediately stops the motor, this is a preemptive warning issued before critical overload alarms like A.710 (instantaneous overload) or A.720 (continuous overload) occur. Root Causes and Solutions

When this code appears on a Yaskawa Sigma-3 or Sigma-7 series drive, it is usually triggered by one of the following factors: Mechanical Overload & Load Conditions

Cause: The motor is physically struggling with a load that exceeds its rated torque, or there is mechanical friction (e.g., worn bearings, misalignment).

Solution: Check for mechanical blockages and verify that the load matches the motor's capacity. You may need to reconsider operating conditions or increase motor size. Wiring and Connectivity Issues

Cause: Incorrect or loose wiring in the servomotor or encoder cables can cause faulty feedback, making the drive "think" it is overloading.

Solution: Inspect and secure all connections for the servomotor main circuit and encoder cables. Parameter Settings

Cause: The Overload Warning Level (Pn52B) might be set too low, triggering the warning prematurely even if the motor is within safe operating limits.

Solution: Adjust parameter Pn52B to a more suitable percentage of the rated load according to Click2Electro. Environmental Factors Cause: High temperatures inside the SERVOPACK panel. Solution: Ensure the panel temperature stays below through improved ventilation or cooling fans. Next Steps for Troubleshooting

Monitor Torque: Use the drive’s monitoring tools (like SigmaWin+) to check the actual torque percentage during the operation that triggers the warning.

Verify Hardware: If wiring and load are correct but the error persists after power cycling, the SERVOPACK unit itself may be faulty and require replacement.

Check Previous Alarms: Check the alarm history to see if A.910 frequently leads to A.710 or A.720, which confirms a genuine physical overload.

In Yaskawa systems, specifically the Sigma-7 Series Servo Drives, the error code A.910 (often displayed as A910) indicates an Overload Warning. This is a minor fault or alarm notifying the operator that the drive is operating near its thermal limit, but has not yet reached the critical trip point. Meaning and Impact

Description: The drive has detected that the motor or SERVOPACK is approaching an overload condition based on its internal protection characteristics.

Behavior: Unlike a hard "Fault," an alarm like A.910 may not immediately stop the motor but serves as a warning that a shutdown is imminent if the load is not reduced. Common Causes

The A.910 alarm is typically triggered by one of the following factors:

Incorrect Wiring: Faulty contacts or incorrect wiring between the servomotor and encoder.

Excessive Load: Mechanical problems (e.g., binding, friction) or operating conditions that exceed the motor's capacity.

Parameter Settings: The overload warning level defined in parameter Pn52B is set too low for the current application.

Hardware Failure: A internal failure within the SERVOPACK itself. Recommended Remedies

To resolve the A.910 alarm, Yaskawa documentation recommends these steps:

Inspect Wiring: Ensure the servomotor and encoder are correctly and securely wired.

Evaluate Load: Check for mechanical blockages or reconsider the operating conditions. If the load is consistently too high, you may need a motor with a higher capacity.

Adjust Parameters: Verify and set a suitable overload warning level in parameter Pn52B.

Hardware Check: If the alarm persists despite proper wiring and load conditions, the SERVOPACK may be faulty and require replacement.

For more technical details, you can refer to the official Yaskawa Sigma-7 Manual or troubleshooting resources like Click2Electro. 6.3 Drive Alarms, Faults, and Errors

The Yaskawa error code A.910 is not a fatal "fault" that stops the machine immediately, but a Warning for Overload. It is essentially the drive’s way of saying, "I am working too hard, and if this continues, I will shut down to protect myself."

Here is a story of a long night on the factory floor, illustrating how this error occurs and how to fix it. The Ghost in the Assembly Line: A Tale of A.910

The clock on the wall of the automotive plant read 2:14 AM when the line stuttered.

Jack, the head maintenance tech, didn't need to hear the alarm to know something was wrong. He could feel it in the floorboards—a subtle change in the vibration of the Sigma-7 servo motors that powered the main conveyor. He walked over to the control panel of the lead SERVOPACK. The small seven-segment display was blinking a steady, rhythmic code: A.910. The Warning Before the Storm "At least it's not an A.710 yet," Jack muttered.

He knew A.910 was the "Overload Warning". It meant the motor was drawing more torque than it was rated for, but hadn't yet reached the breaking point where it would trigger a hard fault (A.710 or A.720) and crash the line. The drive was giving him a chance to fix it before the thermal protection kicked in. The Investigation

Jack started his mental checklist, knowing the common culprits for an A.910: Mechanical Friction: Was a bearing seizing up?

Wiring Issues: Was there a loose contact in the motor or encoder cables?

Parameter Sensitivity: Was the warning level (Pn52B) set too low for the current job? Environment: Was the control cabinet overheating?

He grabbed his infrared thermometer. The SERVOPACK panel was at 48°C—warm, but well below the 55°C limit. Heat wasn't the ghost tonight. Finding the Friction

Jack moved to the conveyor belt itself. He noticed a slight buildup of debris near the drive pulley—metal shavings from the day shift had wedged themselves into the guide rail. Every time the servo tried to accelerate the heavy pallet, it had to fight through that extra resistance. The motor was pulling 110% of its rated torque just to keep up. "There you are," he said. The Resolution

Jack cleared the debris and reapplied high-temp grease to the rails. He returned to the panel and watched the load monitor (Un002). The torque percentage dropped from the "danger zone" back down to a comfortable 65%.

He didn't even have to reset the drive; because A.910 is a warning, it cleared itself once the operating conditions returned to normal. The conveyor sped back up, the "Ghost" was gone, and the factory floor returned to its steady, industrial hum. Technical Summary of A.910 🛠️ Alarm Name Overload Warning Severity

Minor (Warning) - Does not always stop the motor immediately. Triggers

Occurs when torque or current exceeds the rated level for a period of time. Next Step

If ignored, will lead to hard faults A.710 (High Load) or A.720 (Low Load). Common Fixes In the world of high-precision motion control, the

Check Mechanicals: Look for jams, binding, or lack of lubrication.

Verify Wiring: Ensure U, V, and W power phases and encoder cables are secure.

Adjust Parameters: Check Pn52B (Overload Warning Level). If the application naturally runs high, this may need to be increased slightly.

Resize Motor: If the load is consistently too heavy, a higher-capacity motor/drive combo may be required. If you are currently facing this error, let me know:

Which Yaskawa series are you using (Sigma-5, Sigma-7, etc.)?

Does the error happen at startup or during a specific movement? Have you recently changed the load or the program? Table 1 - Yaskawa

In Yaskawa systems, the code typically indicates an Overload Warning

. Depending on whether you are using a Servo Drive or a Robot Controller, the specific implications and fixes vary. 1. Yaskawa Servo Drives (Sigma Series) For Yaskawa servo drives (like Sigma-5 or Sigma-7),

is a warning that the motor is operating near its thermal limit. It is a "pre-alarm" that occurs before the drive trips on a hard overload fault (like A.710 or A.720).

The servomotor has been operating at a torque level exceeding its rating for a sustained period. Common Causes: High Load:

The motor is pushing or pulling more weight than it is rated for. High Ambient Temp: The surrounding environment is hotter than 40°C ( Mechanical Bind:

There is friction or a jam in the mechanical system the motor is driving. Wiring/Encoder Issues:

A faulty encoder or internal circuit can sometimes trigger false thermal readings. Recommended Actions: Reduce Load: Decrease the cycle rate or the weight the motor is moving. Check Mechanics:

Ensure there are no physical obstructions or worn-out bearings causing extra friction.

Ensure the drive's cooling fan is working and the cabinet has proper ventilation. MachMotion 2. Yaskawa Motoman Robots (DX100, FS100) On robot controllers, the code is often categorized as a related to specific communication or internal board issues. Yaskawa Knowledge Center DX100 / FS100 Controllers: Typically indicates a CPU Error (YCP01 or CPU-201R) Common Causes: Faulty internal control board. Loose connection between the CPU board and the backplane. Corrupted system software or CMOS data. Recommended Actions: Power Cycle:

Turn the controller off, wait 30 seconds, and turn it back on. Reseat Boards: With power off, carefully reseat the CPU board in its slot. Technical Support:

If the error persists, the CPU board may need repair or replacement through the Yaskawa Motoman Support Center Yaskawa Knowledge Center

For further assistance, you can find official documentation and manuals on the Yaskawa Technical Document Library Are you seeing this code on a servo drive display robot teach pendant Yaskawa Servo Drive Alarm Codes Guide | PDF - Scribd

A very specific question!

The Yaskawa error code A910 is a fault code that appears on Yaskawa servo drives, particularly on the Σ5 (Sigma 5) series. After conducting research, I found that:

Error Code A910: Servo Motor Overheating

The A910 error code indicates that the servo motor has overheated. This can occur due to various reasons such as:

  1. Overload: The motor is subjected to an excessive load, causing it to overheat.
  2. Poor ventilation: Inadequate cooling or ventilation around the motor, leading to heat buildup.
  3. High ambient temperature: Operating the motor in an environment with a high temperature.
  4. Faulty motor or driver: A malfunctioning motor or driver can cause overheating.

Symptoms:

Troubleshooting steps:

  1. Check the motor load: Verify that the motor is not overloaded. Check the load and adjust it if necessary.
  2. Inspect ventilation: Ensure proper ventilation around the motor. Check for any obstructions or blockages that may be restricting airflow.
  3. Monitor ambient temperature: Verify that the operating environment temperature is within the recommended range.
  4. Check for motor or driver issues: Inspect the motor and driver for any signs of malfunction or damage.

Recommendations:

Rating:

Based on the information provided, I'd rate this error code review as follows:

Yaskawa error code A.910 is primarily a rather than a hard fault, indicating an Overload Warning in Yaskawa SERVOPACKs. LK Automation Limited

It serves as a "pre-alarm" to notify you that the motor is approaching its limit and is about to trigger a critical overload alarm, such as (instantaneous maximum load) or (continuous maximum load). LK Automation Limited Key Details & Troubleshooting What it means

: The drive has detected that the motor is operating near its rated capacity for a sustained period. If the workload isn't reduced, the system will trip a full alarm and shut down. Common Causes Mechanical jams or increased friction in the machine.

Large load inertia combined with rapid acceleration or deceleration rates. Operating the motor beyond its rated output for too long. Recommended Actions Reduce the Load

: Lighten the mechanical workload or slow down the cycle time. Check Mechanics

: Inspect for binding, lubrication issues, or physical obstructions in the drivetrain. Adjust Parameters

: If the warning is triggering too early despite normal operation, review the overload warning level settings (e.g., Pn52b in some models) to ensure they match your application requirements. LK Automation Limited Other Variations If you are seeing

on a Yaskawa robot controller (like the FS100), it indicates a

related to the control board, which usually requires checking internal connections or replacing the CPU unit. Yaskawa Knowledge Center specific SERVOPACK model

you are using so I can provide the exact parameter list for that drive?

The Yaskawa error code Overload Warning typically found on Sigma-7 series servo drives

. It acts as a preventative alert, signaling that the system is approaching a more severe (Instantaneous Maximum Load) or (Continuous Load) trip. Meaning and Impact Warning, Not a Hard Fault:

Unlike "Major Faults" that immediately coast the motor to a stop, the A.910 code is a warning. If you continue operation without addressing the cause, the drive will eventually trigger a full overload alarm and stop. Threshold:

It occurs when the motor operation exceeds the overload protection characteristics defined in the drive's parameters. Primary Causes Mechanical Load Issues: Frequently Asked Questions (FAQ) about A910 A Story:

Excessive physical load on the motor due to friction, a jammed mechanism, or an undersized motor for the application. Wiring Faults:

Incorrect wiring or faulty contacts between the servomotor and the encoder. Parameter Settings: The overload warning level (specifically parameter

) may be set too low or is unsuitable for the current operating conditions. Hardware Failure: In rare cases, a failure within the unit itself can trigger false warnings. Recommended Solutions Check Mechanicals:

Verify the machine is moving freely and that there are no physical obstructions or excessive friction. Verify Wiring:

Ensure all encoder and motor power cables are securely connected and follow the Yaskawa Sigma-7 Wiring Diagrams Adjust Operating Cycle:

Reduce the speed, acceleration, or duty cycle to lower the average load on the motor. Parameter Adjustment:

If the load is within safe limits but the warning persists, adjust parameter to a more appropriate level using or the digital operator. Replace SERVOPACK:

If the warning occurs immediately at power-up without a load attached, the Yaskawa SERVOPACK may need professional repair or replacement. for adjusting the parameter on your drive? Σ-7C SERVOPACK - Troubleshooting Manual

In Yaskawa systems, the code A.910 is an Overload Warning. This minor fault or alarm typically indicates that the motor is drawing current near its rated capacity and is on the verge of a critical overload trip (such as A.710 or A.720). Report for Yaskawa Error Code A.910 Description Alarm Name Overload Warning Status Minor Fault/Warning (ALM LED usually flashes) Primary Meaning

The drive has detected a load that exceeds the motor's continuous rating for a specific duration, but has not yet reached the trip point. Common Causes

Mechanical Issues: Excessive load due to mechanical friction, binding, or a sudden obstruction in the machine.

Operating Conditions: The starting torque exceeds the maximum allowed torque, or the motor is operating at peak capacity for too long.

Wiring Faults: Incorrect or loose contact in the servomotor or encoder wiring.

Environmental Factors: High ambient temperature inside the SERVOPACK panel (exceeding 55∘C55 raised to the composed with power C

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

Check Mechanical Load: Inspect the connected machinery for jams, lack of lubrication, or increased friction.

Verify Wiring: Ensure all motor and encoder cable connections are secure and correctly pinned.

Adjust Parameters: If the load is normal but the warning is premature, verify the setting of Pn52B (Overload Warning Level).

Cooling Check: Ensure panel fans are operational and the temperature is within the specified range ( 55∘C55 raised to the composed with power C

Monitor Operation: Use the monitor function (e.g., Un006 for motor load ratio) to see how close the system is to a full overload alarm. Note on Robot Controllers DX100 ALARM CODE 0910 CPU ERROR (YCP01)

DX100 ALARM CODE 0910 CPU ERROR (YCP01) – Yaskawa Motoman. Yaskawa Knowledge Center NX100 ALARM CODE 0910 CPU ERROR (NCP01)

In the world of precision manufacturing, the Yaskawa error code is a common "warning" sign that something is pushing your servo system to its limits. Unlike a hard "fault" that shuts everything down instantly, this code acts as a cautionary tale—a is imminent if things don't change. Blodgett Ovens The Story of the Strained Servo Imagine a high-speed packaging line where a Yaskawa

servo drive is the heart of the operation. One afternoon, the display suddenly flickers with the code

. The machine doesn't stop yet, but the "warning" light is a clear signal that the drive is feeling the pressure. 1. The Unexpected Resistance The most common cause of the A.910 is a mechanical struggle

. In our story, a small piece of debris has wedged itself into the conveyor track. The motor is now fighting to move the same load, drawing more current than usual to overcome this new friction. The drive notices this increased effort and throws the

code to let the operator know that the system is operating beyond its comfortable "overload protection characteristics". 2. The Heavy Lift Sometimes, the story isn't about a jam but about exceeding capacity

. If the production manager decides to increase the weight of the packages or the speed of the line without recalibrating, the servo may find itself in a permanent state of "excessive load". The A.910 warning appears because the motor is being asked to do more than it was designed for, or because the Overload Warning Level (Pn52B) parameter is set too low for the current job. 3. The Silent Connection Issue

In some cases, the problem isn't the load at all, but a "whisper" that didn't make it through. Incorrect wiring faulty contact

in the power or encoder cables can cause erratic readings. The drive misinterprets these signals as a struggle to move, triggering the warning even if the mechanics are perfectly smooth. How the Story Ends (Troubleshooting)

To resolve the A.910 and prevent it from turning into a full machine shutdown, operators typically follow these steps: Clear the Path

: Inspect the mechanical system for jams, lack of lubrication, or worn-out bearings that might be adding friction. Check the Load : Use the drive's monitor function (like

for accumulated load ratio) to see if the motor is actually being pushed past its rated capacity. Verify Settings : Ensure the

parameter (overload warning level) is appropriate for the application. Inspect Wiring

: Tighten all connections and check for damaged cables that might be causing signal "noise". Yaskawa America

If the warning persists despite these checks, it may indicate an internal SERVOPACK fault

, signaling that it’s time for a professional repair or replacement. MachMotion to change when this warning triggers? Sigma Series SGM/SGMP/SGDA USER'S MANUAL - Yaskawa

Yaskawa Error Code A910: Overload Warning

Step 4: Perform Automatic Current Offset Adjustment (Auto-Tuning for Sensors)

Many Yaskawa drives have a hidden or semi-hidden routine to auto-calibrate the current sensors. This is often the only fix without hardware repair.

For GA800 and GA700:

For A1000 and V1000:

Q3: How much does it cost to repair a drive with A910?

A: For a small 1hp drive (e.g., J1000), repair may cost $150-$300, while a new drive is $250-$400. For a 50hp GA800, repair could range from $800 to $1500, versus $3000+ new. Always compare.

Common Causes

  1. Broken shaft or coupling (most common on pumps/fans).
  2. Broken belt on a conveyor or fan.
  3. Loss of prime in a pump (pump running dry).
  4. Tool breakage (in spindle applications).
  5. Open circuit between the drive and motor (e.g., blown fuse, contactor open, loose wiring).
  6. Motor not magnetized (particular to PM motors).
  7. Incorrect parameter settings for L6-02 (torque level) or L6-04 (detection time).