Code F01616: Processor selftest faulty
Issue Description & Safety Warning
The Siemens SINAMICS G120 CU240S Drive has triggered a critical Processor selftest faulty 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 (OFF 3) Acknowledge: Quit fault eg. via DI2 Cause: The processor selftest has uncovered an error: - r0949 = 100: General error on P1. - r0949 = 101: Error in RAM test on P1. - r0949 = 102: Error in ROM test on P1. - r0949 = 103: Error in processor function test on P1. - r0949 = 200: Error in processor self-test on P2. The selftest is started together with the forced dynamisation and must be enabled by setting p9601.1 and p9801.1. Remedy: - Run self-test again (set bit 1 in p9601 and p9801 and enter the STO mode, then leave the STO mode again).
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 F01616 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.
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