Robot Safety — Two-Hand Control Distance
Two-Hand Control Distance calculation per the machinery-safety standards (ISO 13855/13857, ISO 10218, ISO/TS 15066).
Two-hand controls guarantee where the hands were at cycle start — the 250 mm constant covers the lunge from buttons toward the die after release. The trap is defeat-ability: if one button can be taped down or both pressed with one forearm, the calculated distance protects no one.
Formula
Note: Safety calculations here are layout-planning aids ONLY. The legally required values must come from the cited standards' full tables and a documented risk assessment by a qualified person.
Two-Hand Control Distance calculation per the machinery-safety standards (ISO 13855/13857, ISO 10218, ISO/TS 15066). A free industrial robot kinematics & cell design tool — no sign-up, no upload, instant results in your browser.
About Robot Safety — Two-Hand Control Distance
Robot Safety — Two-Hand Control Distance computes the governing relationship S = 1600·T + 250 [ISO 13855 two-hand devices] live as you type. Two-hand controls guarantee where the hands were at cycle start — the 250 mm constant covers the lunge from buttons toward the die after release. The trap is defeat-ability: if one button can be taped down or both pressed with one forearm, the calculated distance protects no one. Defaults are pre-filled with realistic values for this exact scenario, and the worked example substitutes your numbers step by step so the math is never a black box.
How to use Robot Safety — Two-Hand Control Distance
- 1Enter your values — Total stopping time T (sensible defaults are pre-filled).
- 2Read the live results: Minimum distance to hazard.
- 3Check the "with your numbers" line to see S = 1600·T + 250 [ISO 13855 two-hand devices] substituted step by step.
- 4Adjust inputs until the scenario matches yours, then copy or share the result.
Why use Robot Safety — Two-Hand Control Distance?
- ✓Instant, free and private — every calculation runs client-side in your browser; nothing is uploaded
- ✓Built on the stated formula S = 1600·T + 250 [ISO 13855 two-hand devices] with authoritative sources cited on the page (ISO 13855 — Positioning of safeguards w.r.t. approach speeds; ISO 13857 — Safety distances (upper/lower limbs); ISO/TS 15066 — Collaborative robots: power & force limiting)
- ✓Two-hand controls guarantee where the hands were at cycle start — the 250 mm constant covers the lunge from buttons toward the die after release.
- ✓SI ⇄ Imperial toggle converts your inputs in place, so you can work in the units your drawings use
Frequently asked questions
What formula does the robot safety — two-hand control distance use?+
It evaluates S = 1600·T + 250 [ISO 13855 two-hand devices], exactly as published. Sources: ISO 13855 — Positioning of safeguards w.r.t. approach speeds; ISO 13857 — Safety distances (upper/lower limbs); ISO/TS 15066 — Collaborative robots: power & force limiting. The substituted worked example on the page lets you verify every step against the textbook.
How should I read the result — and how far can I trust it?+
Two-hand controls guarantee where the hands were at cycle start — the 250 mm constant covers the lunge from buttons toward the die after release. Safety calculations here are layout-planning aids ONLY. The legally required values must come from the cited standards' full tables and a documented risk assessment by a qualified person.
When is this calculator the right tool for the job?+
Two-Hand Control Distance calculation per the machinery-safety standards (ISO 13855/13857, ISO 10218, ISO/TS 15066). A free industrial robot kinematics & cell design tool. The trap is defeat-ability: if one button can be taped down or both pressed with one forearm, the calculated distance protects no one. For neighbouring scenarios, the related tools below cover the same engine with different presets.
Does it support both metric and imperial units?+
Yes — the SI ⇄ Imperial toggle converts the values already in the fields, preserving the physical quantity, so you can flip mid-calculation without re-entering anything.
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