Code 700048: Not possible to unlock protective door! Spindles/axes not at standstill
Issue Description & Safety Warning
The Chiron Siemens-Control CNC has triggered a critical Not possible to unlock protective door! Spindles/axes not at standstill 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
It is currently not possible to unlock the protective doors since the axes or spindles are not stopped. The protective doors are not unlocked. 1. Press [FEED STOP] or [CYCLE STOP] key. Spindle and axes stop. 2. Once the axes signal that they are stopped, the protective door can be unlocked with the [Door bypass button]. 3. Press [RESET], [CYCLE START] or [FEED START] key. Message is cleared.
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 700048 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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