Rockwell Automation 442L-SFZNMN SafeZone Mini Safety Laser Scanner User Manual - Manual (Page 30)

28 Rockwell Automation Publication 10000337275 Ver 01—October 2014
Chapter 5 Mounting
Fig. 18: Access protection
The minimum distance S as defined in EN ISO 13855 and EN ISO 13857 depends on:
•
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
• Supplement C against reaching through
How to calculate the minimum distance S (see EN ISO 13855):
 First, calculate S using the following formula:
S = (K × (T
M
+ T
S
)) + C
Where …
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
C = Supplement against reaching through (850 mm (33.5 in.))
Response time T
S
of the SafeZone Mini
The total response time of the SafeZone Mini must not be more than 80 ms for access protection!
If a critical response time is exceeded, a person may no longer be detected under certain circumstances.
In specific cases agreed with the responsible authorities higher response times may be allowed (for example by increasing
the detection time available by positioning the safety laser scanner at an angle). In this case ensure that the areas the
safety laser scanner cannot see are protected by additional measures.
The response time T
S
of the SafeZone Mini depends on …
• The basic response time of the SafeZone Mini.
• The multiple sampling set.
See Chapter 12, “OSSD response times” on page 55.
Protective field
Contour of the floor
as reference
S
ATTENTION