Siemens alarm 300500: Axis %1 drive %2 system error, error codes %3, %4
SINUMERIK 840D/810D powerline drive alarm (SIMODRIVE 611D) · SIMODRIVE 611D/611U
What it means
The drive processor signalled an internal system error to the NCK; the two error codes identify where and why. A classic case is insufficient computation time in the monitored cycle - notably with SINUMERIK Safety Integrated active (error no. 03, info 40: monitoring cycle too small), which trips STOP B/A responses on FDD/MSD.
Likely causes
- drive cycle time too small for enabled functions (esp. Safety Integrated)
- internal drive software fault / corrupted boot file
- drive hardware fault in the closed-loop control module
Triage note: Look up codes %3/%4 in chapter 'Error Codes of Alarm 300500' of the Diagnostics Guide; remedy is usually POWER ON, larger cycle times, or reloading drive software - replacement is rare.
Replacement parts
We supply the following units for this alarm — tested, warranty-backed:
- Request a quote →
6SN1118-…
control-board · Check if others ruled out
Need the part urgently?
Send us alarm 300500 with your machine details — typical RFQ turnaround is 24–48h.