Overview
EN ISO 6682:2008 (identical to ISO 6682:1986 incl. Amd 1:1989) is a CEN-adopted standard for earth-moving machinery that defines ergonomic zones of comfort and zones of reach for controls. It establishes operator-focused control location guidance from the seated position using a Seat Index Point (SIP) XYZ coordinate system and anthropometric data for large and small operators. The standard is intended as a design guide for operator compartments and supports conformity with relevant EU Machinery Directives (see informative Annexes ZA/ZB).
Key topics and technical requirements
- Scope and purpose: Defines preferred and acceptable control locations derived from overlapping reach capabilities of large and small seated operators.
- Coordinate system (SIP): Uses an XYZ system with origin at the Seat Index Point (SIP) to locate controls in fore-aft (X), lateral (Y) and vertical (Z) axes.
- Control classification:
- Primary controls (frequently used or continuous - e.g., transmission, steering, working-tool controls).
- Secondary controls (infrequently used - e.g., lights, wipers, heater).
- Zones defined:
- Zones of comfort: Preferred areas for primary hand and foot controls where both large and small operators can reach comfortably.
- Zones of reach: Areas for secondary controls reachable with rotation or leaning.
- Design parameters and anthropometry:
- Uses dimensions and ranges of motion from ISO 3411 (human physical dimensions) and provides body pivot dimensions and movement angle ranges.
- Specifies seat adjustment assumptions (e.g., 150 mm fore–aft range; recommended 75 mm vertical adjustment) and how seat settings affect control zones.
- Detailed geometry:
- Annex B and illustrated figures supply coordinates, radii and planar/spherical boundaries to generate scale drawings for hand and foot control location zones.
- Practical modifiers:
- Zones may be rotated (up to 30°) for rear-facing controls.
- Increase hand-control zones by 75 mm for finger-grasp operation.
- Foot zones may be narrowed by 25 mm in certain seat-adjustment scenarios.
Applications and users
- Machine designers and OEMs developing cabs and operator stations for excavators, loaders, graders, backhoes and similar earth-moving machinery.
- Ergonomists, human factors engineers and safety specialists specifying control layouts to reduce operator fatigue and improve reachability.
- Compliance and certification teams using EN ISO 6682 to demonstrate conformance with EU Machinery Directives (2006/42/EC, 98/37/EC) where applicable.
- Technical illustrators and CAD engineers using the provided coordinates and figures to produce ergonomic control layouts.
Related standards
- ISO 3411 - human physical dimensions for earth-moving machinery.
- ISO 5353 - Seat index point (SIP).
- ISO 6746/1 - definitions of dimensions and symbols for base machines.
Keywords: earth-moving machinery, ISO 6682, zones of comfort, zones of reach, operator compartment, control layout, ergonomics, Seat Index Point (SIP), CEN, machinery directive.
