SICK V200 User Manual

Operating Instructions Chapter 4
V200/V300
8012227/YT87/2016-03-29 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 21
Subject to change without notice
Mounting
4.2.1 Minimum distance according to EN ISO 13 855 and EN ISO 13 857
The minimum distance as defined in EN ISO 13 855 and EN ISO 13 857 depends on the
following factors:
• 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 entire protective device (V200/V300: 20 ms)
• reach or approach speed
• other parameters that are stipulated by the standard depending on the application
How to calculate the minimum distance S according to EN ISO 13 855 and
EN ISO 13 857:
The following calculation shows an example calculation of the minimum distance. The
calculation is based on the assumption that the approach is perpendicular to the
protective field.
Depending on the application and the ambient conditions, a different calculation may be
necessary.
⋅ Initial formula: S = K × T + 8 × (d – 14)
Where …
S = Minimum distance in [mm]
K = 2000 mm/s
Definition and value as per EN ISO 13 855, derived from data on the approach
speed of the body or parts of the body
T = Stopping/run-down time of the entire system in [s]
Stopping/run-down time of the entire system = Stopping/run-down time of the
machine + response time of the protective device after light path interruption
d = Detection capability (resolution) of the protective device in [mm]
The reach/approach speed is already included in the calculation formula.
With K = 2000 mm/s the 1st formula is:
1. calculation formula: S = 2000 × T + 8 × (d – 14)
⋅ If the result S is ″ 100 mm and S ′ 500 mm, then use the determined value as the
minimum distance.
As per EN ISO 13 855 a minimum distance S < 100 mm is not allowed. If you obtain a
value S < 100 mm with your calculation, please contact SICK service.
⋅ If the result is S > 500 mm, use K = 1600 mm/s in the formula and calculate S again:
2. calculation formula: S = 1600 × T + 8 × (d – 14)
⋅ If the new value S is > 500 mm, then use the newly determined value as the minimum
distance.
If the new value S is ′ 500 mm, then use 500 mm as the minimum distance.
Example:
The following values apply:
Stopping/run-down time of the machine = 290 ms
Response time of the V200/V300 after light path interruption = 20 ms
Detection capability (resolution) d of the V200/V300 = 20 mm
You will find the values for the response time and the resolution of the V200/V300 in
chapter 11 “Technical specifications” on page 52.
Note
Note
Note

SICK V200 Specifications

General

Brand	SICK
Model	V200
Category	Digital Camera
Language	English