15
107022-16 EN FR26 GLO 301 Printed in Germany
3.2.
Machine guarding protection
FF-LS Series thru scan safety light curtains are non-contact machine guarding devices designed to increase the protection
of operators of power driven machinery.
FF-LS Series safety light curtains generate a stop signal if the sensing field is interrupted. Continued operation is prevented
until the sensing field is cleared. The FF-LS Series safety light curtain monitors itself continuously for component failures,
misalignments, and dirt accumulations. If misalignment or dirt accumulations become too great or a component fails, a stop
signal is generated. Operation is prevented until the condition is corrected.
FF-LS Series light curtains are designed so a malfunction or an interruption of the sensing field will cause the light curtain to
generate a stop signal within a maximum of 50 milliseconds. This stop signal will be generated automatically if a malfunction
occurs in the safety light curtain. All other machine control components that affect safety should also be designed to the
same high level of operation.
Vertical mounting may require the installation of fixed barriers or additional light curtains to prevent operating personnel
from reaching around, under, or over the sensing field.
For point-of-operation guarding, the safety light curtain(s) and any fixed barriers must be installed to detect or prevent
operating personnel from standing between the safety light curtain and the danger zone (see Figure 3-1).
IMPROPER POINT OF OPERATION INSTALLATION
For point-of-operation guarding the light curtain(s) and any fixed barrier must be installed so that NO PERSON can stand or
reach between the light curtain and the danger zone.
Allow entry into the protected area by interruption of sensing field or other safeguarding device only. This may require using
additional fixed barrier guarding, horizontal or angled positioning of the light curtain, or additional light curtains.
Failure to comply with these instructions could result in death or serious injury.
Figure 3-1 Point-of-operation guarding
Penetration into the danger
zone under the barrier
Penetration into the danger
zone above the barrier
Penetration between the
barrier and the danger zone
Mechanical protection on the
rear face and on the sides
Содержание FF-LS082802362
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