Unlike absolute faults that instantly cut power to the servomotor, the . 1. Predictive Warning Mechanics The Yaskawa SERVOPACK calculates an internal I2tcap I squared t

Troubleshooting the Yaskawa Error Code A.910 (Overload Warning)

This comprehensive guide provides an in-depth look at Yaskawa error code A.910—from its fundamental meaning to advanced troubleshooting techniques. Whether you are a maintenance technician, controls engineer, or plant manager, the following information will help you diagnose, resolve, and prevent this issue. For clarity, note that error codes may appear on your drive’s digital operator as “A.910,” “A910,” or the hexadecimal equivalent .

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

Reacting to warnings prevents a hard shutdown, but eliminating the conditions that cause them ensures maximum plant productivity. Implement these preventative steps:

When an A.910 code appears on your digital operator, follow this sequential troubleshooting pipeline: 1. Inspect the Mechanical System

This comprehensive guide will help you understand what triggers the A.910 code, how to systematically troubleshoot it, and how to prevent it from crippling your production line. What Does Yaskawa Error Code A.910 Mean?

This comprehensive technical guide explains the underlying engineering behind the A.910 warning, addresses its operational causes across different Yaskawa generations, and provides step-by-step diagnostic and resolution pathways. Understanding the A.910 Overload Warning Architecture

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.

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

Inspect the main circuit power cables and the encoder cables linking the motor to the SERVOPACK.

A.910 can also appear in conjunction with other codes. In one documented field case, a Yaskawa Servopack SGDV-120A01AY101AA simultaneously generated both A.710 and A.910 alarms accompanied by severe motor instability—the motor started jerkily, responded with delay to motion commands, and stopped after a few seconds. Testing revealed a severe current asymmetry: while phases U and V each carried approximately 4 A, phase W showed only about 0.8 A. This phase current fault caused a distorted rotating field, triggering the overload warning and eventually the alarm.

Check parameter Pn52B (Overload Warning Level) on your drive. This parameter allows you to adjust the warning threshold percentage (ranging from 10% to 100% of the maximum rated continuous thermal capacity). Ensure this value aligns with your machine's cycle profile. 4. Ambient Panel Thermal Soak

By staying informed and proactive, you can ensure optimal performance and reliability from your Yaskawa equipment.

Is the drive using any or running a DriveWorksEZ program ?

If you operate industrial automation equipment, you’ve likely encountered the distinctive red digital display of a Yaskawa servo drive flashing an error code. Among the most common and concerning of these is . Understanding and resolving this warning is critical to keeping your production line moving efficiently.

: Measure the internal cabinet temperature. Ensure it does not exceed 55°C during maximum production load. Clean all cabinet ventilation filters, verify that the internal SERVOPACK cooling fan spins freely, and install auxiliary cooling units if necessary. Systematic Troubleshooting Workflow