Rockwell Automation 440F MatGuard, 440F-C4000 Mat Controllers - Manual (Page 18)

requirements for the size and positioning of the mats as shown in Fig. 11.
Fig. 11. NOTE: Fixed guarding should meet the requirements of EN 953, EN 294 & EN 811.
Firstly, ascertain the route(s) where unobstructed access to the hazard zone is required across the mat
system. Take into account all the routine needs for access, such as product inspection, machine
inspection and adjustment, tool changes & clearing blockages. Consider also visual observation of the
process. Take into account the space requirements of persons and ancillary equipment close to the
machine during interventions.
SAFETY DISTANCE CALCULATIONS
For applications using the mat system as a combined trip and presence sensing system these should be
done in accordance with EN999. The flow chart at fig. 12 shows the essential steps.
NOTE: If the machine is designed in conformity with an existing harmonised European “C”: type
standard for that machine which gives specific formulae or minimum distances, then
these should be used in preference to those given in EN 999.
SENSOR MATS
HAZARD HAZARD HAZARD
SENSOR MATS SENSOR MATS
FIXED GUARD
EXTENDED
FIXED GUARD
ARROWS SHOW
ACCESS
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