Mitsubishi M800/M80 alarm screenshots: information to retain before repair

A photograph showing only a four-digit number often leaves repair personnel asking which axis was involved, when it occurred and what was done beforehand. When a Mitsubishi M800/M80 raises an alarm, retaining complete evidence usually helps plan the next check more than repeated resets. This article concerns fault-information collection; it provides no way to bypass alarms or force operation.

First identify the control system shown

This article follows IB-1501505-P and covers the M800, M80, E80 and C80 series listed there. The manual describes alarm help displaying explanations and suggested actions for current alarms, and screen capture saving the display as a bitmap. However, separate-display Windows/non-Windows configurations and C80 implementations using GOT differ. Another machine's ability to capture a screen does not establish identical buttons or save locations on this one.

An alarm record that supports assessment

• Retain the entire screen, including alarm category, complete number, text, axis name and other simultaneous alarms. Do not isolate just one number.
• Photograph the control-system model and relevant drive nameplates separately. Models in photographs must correspond to the alarm record; do not mix a neighbouring machine's nameplates into the same folder.
• State the operating stage: just powered on, emergency stop released, spindle started, movement in a particular direction, or partway through machining. Record what actually happened; do not recreate the fault for a photograph.
• List recent component replacements, power outages, parameter restoration, machine relocation or cleaning. Explicitly record the absence of relevant changes too, avoiding repeated speculation during handover.

Add a timeline after capturing the screen

Name photographs in chronological order and state when the fault first appeared and when operation was last normal. Number successive alarm pages from the same stoppage. Check readability when glare or blur obscures text. If the equipment clock is wrong, record local time separately rather than changing system settings to align the records.

Alarm help gives an investigation direction, not a confirmed failed component. If its guidance involves entering the cabinet, measuring electrical signals or removing modules, pass the information to suitably equipped repair personnel. Operators can first complete the symptom and photograph record; they should not look for a better camera angle inside an energized cabinet.

State the question the submitted evidence needs to answer

On the first page, explain whether the objective is to assess safe restart, arrange an on-site inspection or prepare a drive for shipment for repair. For Y03, continue with the amplifier-not-installed case and checks. For S01/006B, compare the inrush-circuit abnormality record, retaining the differences specific to your equipment.

Reference: M800/M80/E80/C80 Series Specifications Manual (Function), IB-1501505-P, §6.2.11 and §6.2.14, printed page 101; model function tables. This text explains scope and suggests ways to organize site records. Follow the documentation for the actual system and machine builder for specific operations.