common problem
Troubleshooting Y03 Error: Drive Unit Not Installed When Connecting Mitsubishi M80 System to MDS-EJ-V1-40B Drive
Mar 03, 2026
The customer is using the Mitsubishi M80 system and cannot recognize the driver when installing the fourth axis. The driver model used by the customer is: MDS-EJ-V1-40B
System error: Y03 Driver unit not installed
On-site guidance: The customer adjusted parameter 1290 to 1, perfectly resolving the issue.
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