10 mm finger protection · 500/600 mm height
Narrow-pitch selection & mounting. This guide explains when to choose 10 mm resolution safety light curtains, how to size 500/600 mm protective heights, and how to mount, align, and verify per good practice. Includes a quick sizing helper, acceptance checklist, and copy-ready spec table.
1) When 10 mm finger protection is the right choice
Typical use cases
- Handling of small parts where fingers can approach the hazard.
- Press brake front zone, fine assembly cells, pick-and-place near dies.
- Retrofits with short safety distance requirement (tight footprint).
Engineering notes
- Higher beam density → more sensitive to misalignment & pollution.
- Choose anti-interference models if there’s welding arc/strong light.
- 10 mm implies finger protection; still compute distance via ISO 13855.
2) Selection table (500/600 mm height)
| Model class | Resolution | Protective height | Typical range | Response time | Notes |
|---|---|---|---|---|---|
| Narrow-pitch Standard | 10 mm | 500 mm | 0.3–3 m | ≤ 20 ms (typ.) | Compact machines; short reach-in distance |
| Narrow-pitch Extended | 10 mm | 600 mm | 0.3–3 m | ≤ 22 ms (typ.) | Extra vertical coverage for operator posture variance |
| With protective window | 10 mm | 500/600 mm | 0.3–2.5 m | +1–2 ms | Oil-mist/welding spatter; plan cleaning interval |
Values are typical class references; use your device datasheet for exact numbers and apply worst-case in calculations.
3) Safety distance quick helper (ISO 13855)
Stop + ESPE + logic + other
For 10 mm resolution, ISO 13855’s added term C = 8×(d−14) is 0 (since d ≤ 14). Final S = K×T + C + optional margin.
4) Mounting & alignment (narrow-pitch specifics)
Mechanical
- Use rigid brackets with anti-vibration pads; avoid cantilevering long spans.
- Distance from mirror-like surfaces ≥ 300 mm to avoid reflections.
- Keep sensor cables separate from power ≤ parallel 200 mm; cross at 90°.
Alignment routine
- Rough align by sight and level; power up and read alignment indicators.
- Maximize horizontally → vertically; tighten while watching stability.
- Introduce a 10 mm test rod at corners/center; confirm reliable detection.
5) Acceptance & periodic tests
| Item | Test | Expected | Result | Notes |
|---|---|---|---|---|
| Resolution | 10 mm test rod at multiple points | Beam interrupted every try | ||
| Channel coherence | Block/unblock beams | Dual OSSD change simultaneously | ||
| EDM | Hold K1/K2 contactor | Reset inhibited | ||
| Reset | Edge/two-stage only | Hold-to-reset ineffective | ||
| Safety distance | Compute & record | S ≥ calculated value |
CSV (copy & keep in the file)
Machine/Line,Location,Resolution,Height,Range,Ttotal(ms),K(mm/s),Margin(mm),S(mm),Date,By,Notes
,,,10 mm,500/600 mm,,2000,,,
6) Troubleshooting (what’s unique at 10 mm)
| Symptom | Probable cause | Fix |
|---|---|---|
| Random trips | Vibration, near-field reflections, arc light | Stiffen mounts; add shrouds/filters; adjust angle; increase distance from reflective surfaces |
| Fails rod test at edges | Roll/pitch misalignment | Re-align X/Y; check frame squareness; verify bracket torque |
| Cannot meet S | Stop time too long | Improve stop performance; move curtain further; consider muting/blanking only if allowed |
7) FAQ
Why choose 500 mm vs 600 mm height?
500 mm suits compact cells where posture is constrained; 600 mm adds vertical coverage to accommodate operator variability and fixtures.
Is 10 mm always better than 14 mm?
No. 10 mm increases sensitivity to contamination and alignment. If your risk assessment allows 14 mm, it may be more robust. Use 10 mm when finger access is credible and distance must be minimized.
Do I still need ISO 13855?
Yes. Even with 10 mm resolution, you must compute S = K×T + C and verify on site.