Code 700157: Safety pressure switch protective doors
Issue Description & Safety Warning
The Chiron Siemens-Control CNC has triggered a critical Safety pressure switch protective doors 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
On closing the automatic protective doors, the safety pressure switch has been activated. The error message remains pending only for so long as the safety pressure switch is being activated. Closing the protective doors is immediately interrupted and the protective doors are opened. 1. Close protective doors again. 2. Check safety pressure switches (inputs left / right) and door profiles. Cause 1: Error messages Protective equipment Safety pressure switch protective doors The safety pressure switch registers as already actuated. It is not possible to close the protective doors. Check safety pressure switches (inputs left / right) and door profiles.
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 700157 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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