ISO 21455-2020 pdf download.Mobile elevating work platforms – Operator’ s controls一Actuation, displacement, location and method of operation. 7.6.3 A function enable control that is integral with a control shall be protected against inadvertent activation by a single external force. 7.6.4 Controls requiring activation of a function enable control shall only allow activation if the control is in the neutral position prior to activating the function enable control. 7.6.5 Function enable controls shall deactivate after a period of no more than 10 s of inactivity 7.6.6 The requirements of Lf4 and 7.6.5 do not apply to controls that employ manually operated spool valves where the actuator is mechanically connected to the valve spool and provides visual or mechanical feedback of the spool position. 8 Layout of controls 8.1 General Controls shall be laid out in accordance with this clause to reduce the possibility of error when an operator changes from one MEWP to another of similar type. 8.2 Control panel construction 8.2.1 The layout of controls is subject to the construction of the control panel. Alternative panel configurations, for example, multiple panels on different planes, can be used to provide an ergonomically acceptable layout. 8.2.2 The orientation of the controls relative to other controls shall remain consistent to this document. 8.3 Grouping of controls 8.3.1 Where controls are grouped together by function or feature, the controls shall be visually linked. No other controls shall be positioned in between the grouped controls. 8.3.2 Location on different planes is acceptable if, from the operator’s perspective, the controls are on the same visual axis (for example, a control button directly above the joystick). 8.3.3 Where a separate extending structure speed selector is provided, it shall be accessible by the alternate hand when using the applicable extending structure controls. 8.4 Control groups for Group A MEWPs Control groups for Group A MEWPs shall be laid out in accordance with Table 5.ISO 21455 pdf download.
Download Address
Download