Bosch Rexroth VCH 08.1 Manual page 43

DOK-SUPPL*-VCH*08.1***-PR02-EN-P
Rexroth IndraControl VCH 08.1 Hand-held Terminal
Application of Emergency Stop But‐
ton and Stop Button on the Indra‐
Control VCH 08.1
state from the viewpoint of the emergency stop button, for as long as this
button is not activated.
Fig.4-29: Emergency stop button in neutral position (not pressed)
Fig.4-30: Emergency stop button pressed
● The emergency stop button may not, therefore, serve as the primary safety
device but is provided exclusively to cover any residual risks.
Instead of this and depending on the operation mode, other methods
should be employed as the primary safety device, for example guards,
light barriers and two-hand control devices or enabling switches.
When the emergency stop button is activated, the entire machine or all of
the machines that are switched together in a plant must be lead to a safe
state e.g. by stopping and switching off the power to the endangering drive
mechanisms (stop categories 0 or 1 according to EN 60204-1).
The release of the emergency stop button must not cause any uncontrol‐
led restart of the machine.
Irrespective of whether a handheld terminal has an emergency stop button
or not, permanently installed, universally identifiable and easily accessible
emergency stop buttons must be provided at selected points around the
machine in every case.
● The Machinery Directive does not specify any detailed requirements in
respect to the colouring of the operating elements for emergency stop.
The requirement is as follows: "The device must have clearly identifiable,
clearly visible and quickly accessible controls".
"Emergency stop" buttons are usually identified in red-yellow color. The
specific design should have a signalling function whose effect is that any
person, and especially untrained people, can quickly recognise the oper‐
ating element as the device to eliminate a hazard in the case of an
emergency.
Bosch Rexroth AG 41/117
Technical Data