Code 230-0328: Plug & Play (%2) Inverter detected: %3
Issue Description & Safety Warning
The Heidenhain TNC Series CNC has triggered a critical Plug & Play (%2) Inverter detected: %3 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 "Plug & Play" function for automatic recognition of drive components through the electronic ID label is active for this axis. An inverter was recognized that differs from the current configuration. [Error correction] - Confirm the "Plug & Play" dialog, if the detected inverter belongs to this combination of axis and parameter set - Deactivate "Plug & Play", if the inverter was not correctly recognized - Contact your machine tool builder 10/2023 [335]
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 230-0328 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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