Siemens alarm 61740: Collision through approach
SINUMERIK function alarm · Siemens 840D/810D powerline
What it means
The calculated approach motion to the contour start would collide with blank or fixture according to the cycle's collision model. The cycle aborts before moving. Choose a starting position that allows a collision-free approach path.
Likely causes
- Starting point placed inside the blank envelope
- Retraction/approach clearance too small for the tool holder
- Blank contour larger than actual setup assumed by programmer
Need the part urgently?
Send us alarm 61740 with your machine details — typical RFQ turnaround is 24–48h.