Allen-Bradley SafeZone Mini - Page 45

Rockwell Automation Publication 442L-UM005B-EN-P - April 2017 45
Mounting Chapter 4
Figure 18 - Access Protection
The minimum distance S as defined in EN ISO 13855 and EN ISO 13857
depends on the following:
• Reach or approach speed
• Stopping/run-down time of the machine or system
(The stopping/run-down time is shown in the machine documentation
or must be determined by taking a measurement.)
• Response time of the SafeZone Mini device
• Supplement C against reaching through
Calculate Minimum Distance S
See EN ISO 13855. Calculate S with the following formula:
S = (K × (T
M
+ T
S
)) + C
Variable Description
K Approach speed (1600 mm/s (63 in./s), defined in EN ISO 13855)
T
M
Stopping/run-down time of the machine or system
T
S
Response time of the SafeZone Mini device and the downstream controller
C Supplement for prevention of reaching over (850 mm (33.5 in.))
Protective field
Contour of the
floor as reference
S