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Code 701402: Malfunction minimum lubrication

Issue Description & Safety Warning

The Chiron Siemens-Control CNC has triggered a critical Malfunction minimum lubrication 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

Minimal lubrication (MMS) was activated ( M501 to 516 ), but the MMS system signals an error (abort message). Error messages Minimal lubrication Malfunction minimum lubrication Corresponding cause of error is displayed on the housing of the MMS system: 0 - Medium EMPTY 1 - Medium OVERFILLED 2 - No AIR supply pressure 5 - No volume flow to the tool The error has the following effect: Feed Stop No axis movements possible. "Spindle Stop" Tool spindle is stopped. Speed no longer possible. Read disable Control reads no further program blocks into memory. 1. Eliminate the cause of error on the "MMS system". 2. Check actuation of MMS system (e.g. voltage supply). 3. Check PLC input signals MINIMUM LUBRICATION OUT DATA BCD 1,2,4,8 from MMS system. 4. As soon as the malfunction is remedied, press one of the following keys: [CYCLE START] [FEED START] Message is cleared and the machining program can be continued. For further information with regard to this, please refer to the "LUBRIX" manufacturer's operating instructions.

Source: CHIRON Error Message Overview, all series (Siemens control, V2.0.6, 2012)

Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.

About Chiron Siemens-Control CNC Alarms

Chiron controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code 701402 on the Siemens-Control CNC identifies one specific fault condition — its documented cause and the official corrective steps are listed above, sourced from Chiron's service documentation. Always confirm against the manual for your exact machine configuration and follow LOTO procedures before servicing.

Complete Alarm List: 545 Chiron Siemens-Control CNC codes.

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