Code 231-C710: Error in drive switch-off %1
Issue Description & Safety Warning
The Heidenhain TNC Series CNC has triggered a critical Error in drive switch-off %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
[Cause of error] - The drive could not be decelerated to 0 rpm with the time configured in machine parameter vCtrlTimeSwitchOff. - Possible causes: - An IGBT of the power module switched off. - The machine parameter vCtrlTimeSwitchOff is set incorrectly. - The permissible load was exceeded. [Error correction] - Check the machine parameter vCtrlTimeSwitchOff - Check the load - Exchange the CC controller unit - Inform your service agency
Source: HEIDENHAIN NC Error Messages — TNC7/640/620/320/128, CNC PILOT 640, MANUALplus 620 (10/2023)
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
About Heidenhain TNC Series CNC Alarms
Heidenhain controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code 231-C710 on the TNC Series CNC identifies one specific fault condition — its documented cause and the official corrective steps are listed above, sourced from Heidenhain's service documentation. Always confirm against the manual for your exact machine configuration and follow LOTO procedures before servicing.
Complete Alarm List: 4497 Heidenhain TNC Series CNC codes.
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