Code 700163: Rapid feed limit active (key switch/H30)
Issue Description & Safety Warning
The Chiron Siemens-Control CNC has triggered a critical Rapid feed limit active (key switch/H30) 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
Input key switch was switched on and is at [Key-operated switch "Input“ position [1-3]. Function H30 - Rapid feed limit (On) was programmed. Message is displayed for informational purposes. Rapid feed speed of the machine is limited to 30%. 1. Switch off input key switch. 2. Deactivate function H30 - Rapid feed limit (On) with the counterfunction H31 - Rapid feed limit (Off). If the rapid feed limit is not desired with the key switch switched on, the [RAPID] key can be pressed. Machine now runs at 100% rapid feed speed. The LED of the [RAPID] key is illuminated. This function is reset with the [RESET] key or by deactivating the [RAPID] key. Reduction of rapid feed to 30% with the activated key switch can be deactivated with PLC machine data. (E.g.: for editing another program during machining) PLC – MD 14510[1] Bit 7 = 0 with rapid feed reduction with activated key switch PLC – MD 14510[1] Bit 7 = 1 without rapid feed reduction with activated key switch (Attention: the entry of the bits is made in decimal code) Causes Remedies
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 700163 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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