Code 510123: Moisture sensor mainspindle (broken cable) (1)
Issue Description & Safety Warning
The Chiron Siemens-Control CNC has triggered a critical Moisture sensor mainspindle (broken cable) (1) 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
Coolant high pressure has not been selected but the moisture sensor registers nevertheless. PLC input signal "Moisture sensor main spindle motor“ is still present. Feed Stop after end of program (Program end with M02, M30 or change work area / table side) The activation of the coolant high pressure will be switched off (Motor + Valves). 1. Check moisture sensor on main spindle motor (cable breakage). 2. Check "Vegator" in control cabinet (check activation / setting / PLC input signal). 3. As soon as the malfunction is remedied, press one of the following keys: [FEED START] [CYCLE START] Message is cleared and the machining program can be continued. Coolant high pressure is not activated, but the moisture sensor input = 1 (cable breakage monitoring of moisture sensor). [OK means no high pressure and PLC input signal = 0].
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 510123 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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