Code F00453: Motor Stalled
Issue Description & Safety Warning
The Siemens SINAMICS G120 CU240S Drive has triggered a critical Motor Stalled 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
Reaction: OFF 2 Acknowledge: Quit fault eg. via DI2 Cause: - In SLVC or VC (p1300 greater than 20) and Ramp rate too fast - In SLVC or VC (p1300 greater than 20) and done OFF2 and RUN onto a spinning motor without Flying start enabled - In SLVC (p1300 = 20 or 21) and load too large at very low frequency - In SLVC or VC (p1300 greater than 20) and no motor connected or motor too small for inverter - In VC, the motor cable phase sequence (U-V-W) and the encoder cable wiring may be wired up incorrectly. - The speed controller settings are not optimised to the application. This can cause instabilities. Remedy: - Reduce ramp rate in p1120 - Enable flying start (p1200 equal to 1) - Increase boost in p1611 - Connect motor or use larger motor for this inverter or use VF mode (p1300 less than 20). - Correct the wiring to the motor and / or the encoder as required. Confirm the rotation direction in V/f control mode and compare parameters r0061 and r0021. - Optimise the speed controller settings (gain and integration time).
Source: SINAMICS G120 Control Units CU240S Faults and Alarms (Edition 05/2007)
Last reviewed: 2026-07-01 · Verified against the manufacturer’s official documentation.
About Siemens SINAMICS G120 CU240S Drive Alarms
Siemens controllers include extensive self-diagnostics that flag or halt the machine when a fault is detected. Error code F00453 on the SINAMICS G120 CU240S Drive identifies one specific fault condition — its documented cause and the official corrective steps are listed above, sourced from Siemens's service documentation. Always confirm against the manual for your exact machine configuration and follow LOTO procedures before servicing.
Complete Alarm List: 108 Siemens SINAMICS G120 CU240S Drive codes.
Have a better solution?
Help the industrial community by sharing your repair experience for code F00453.
Need a searchable reference for more Siemens SINAMICS G120 CU240S Drive manuals?
We structure equipment manuals into searchable code, title, cause, solution, safety note, and source-reference data. Send a PDF and example searched codes when you need public pages, private search, or structured exports.
Space reserved for Google AdSense / Industrial Affiliate Links
Monetization target for 2026