Code V01-0003: Safe sys internal process err
Issue Description & Safety Warning
The Mitsubishi M800/M80 CNC has triggered a critical Safe sys internal process err alarm. Immediate attention from a qualified operator or maintenance technician is required to prevent secondary damage to the equipment or spoiled parts during the manufacturing cycle. Always ensure standard safety and LOTO procedures are followed before accessing electrical cabinets.
Official Troubleshooting Steps
Details An error has occurred in the NC’s internal pr ocess during execution of a safety function. The screen displays which safety function has been executed at the time of error, using the following numbers. 0001: Safely-limited speed (SLS) 0002: Safely-limited position (SLP) 0003: Safe speed monitor (SSM) 0004: Safe cam (SCA) 0005: Safe operating stop (SOS) 0006: Safe stop 1 (SS1) 0007: Safe stop 2 (SS2) 0008: Safe torque off (STO) 0009: Safe brake control (SBC) 000A: Diagnostic function 000B: Safety I/O-related observation Remedy CPU may be faulty. Contact our service center.
Source: Mitsubishi M800/M80/E80 Series Alarm/Parameter Manual (IB-1501279)
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
About Mitsubishi M800/M80 CNC Alarms
Mitsubishi controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code V01-0003 on the M800/M80 CNC identifies one specific fault condition — its documented cause and the official corrective steps are listed above, sourced from Mitsubishi's service documentation. Always confirm against the manual for your exact machine configuration and follow LOTO procedures before servicing.
Complete Alarm List: 722 Mitsubishi M800/M80 CNC codes.
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