Control systems
Mitsubishi
Mitsubishi Meldas and M70/M80/M800 controls are found on machines from Makino, HMX, and various Japanese OEMs. The platform shares much architecture with Fanuc but has distinct diagnostic and repair procedures.
Mitsubishi CNC controls — sold under the Meldas brand historically and now as the M70, M80, and M800 series — are found on a wide range of machine tool brands including Makino, HMX, and various Japanese and Korean OEM builds. The platform is particularly prevalent in the aerospace and high-precision tooling sectors.
The M70 and M80 series represent Mitsubishi's current mainstream offering, with the M800 being the latest high-end platform. All share a common architecture with extensive drive integration and their own diagnostic and parameter structure.
Common Mitsubishi fault scenarios include spindle drive alarms (SPR series), battery-backed memory loss following power interruptions, Ethernet or network communication failures with CAM systems, and axis servo faults related to the Mitsubishi-specific MELDAS encoder interface. The FR Configurator tool is used for drive parameter setup and monitoring.
The transition from older Meldas controls to the current M70/M80 generation sometimes creates service challenges when a machine has been upgraded — the older Meldas system has different diagnostic procedures and hardware architecture compared to the newer platforms.
For breakdowns, PPM, or control-related faults on Mitsubishi machines, please contact me with the machine model and fault description.