Handheld Terminal
CE Conformity, Directives and Standards
User's Manual, Version: 1.3
147
© KEBA 2007
In several discussions with external notified bodies and technical commit-
tees it was also determined that temporary, plug-in handheld terminals
should be treated as radio handheld terminal’s.
The approach to constructively eliminate hazards by using clear colour cod-
ing, in preference to any organisational measures, also corresponds to the
“Principles for the Integration of Safety” of the Machinery Directive and is
therefore legally binding.
For this reason, temporary plug-in handheld terminals may likewise only be
equipped with a grey stop button.
Since handheld terminals made by several other manufacturers are on the
market with a grey stop button and have been certified by nominated test
centres, the state of the art requirement is also met.
14.2.10 Information about Enabling Devices
Many machines have both a normal and special operating modes.
The machine fulfils its primary mission in normal (automatic) operation. In
this mode of operation, safety is guaranteed by closed, guards and/or with
protective devices.
A machine’s special operating modes serve to maintain normal operation.
In doing so, safety must be guaranteed in a way that is different to normal
operation, since hazardous areas of the machine can now be entered and
targeted machine movements have to be possible.
The enabling device plays a primary role here.
This application requires the enabling device to eliminate the hazards that
are to be controlled in a timely manner, before any personal injury occurs.
Additional safety measures may be necessary for this purpose, such as
safely reducing the speed of drive mechanisms.
In contrast to the emergency stop button respectively the stop button, a
machine in special operating mode with an enabling button is in a safe
state as long as this enabling button is not activated (see illustration).