SICK M4000 Advanced

Chapter 7 Operating Instructions
M4000 Adv., Adv. A/P, Area
66 © SICK AG • Industrial Safety Systems • Germany • All rights reserved 8010797/YT72/2016-02-19
Subject to change without notice
Mounting
How to calculate the minimum distance S according to EN ISO 13 855 and
EN ISO 13857:
T
he following calculation shows an example calculation of the minimum distance.
Depending on the application and the ambient conditions, a different calculation may be
necessary.
 First, calculate S using the following formula:
S = 1600 × T + C [mm]
Where …
T = Stopping/run-down time of the machine
+ Response time of the M4000 system after light path interruption [s]
S = Minimum distance [mm]
C = Supplement [mm], depending on the number of beams (1, 2, 3 or 4)
If it is possible to reach over the vertical protective field of an ESPE, the
supplement C must be determined as per the tables in EN ISO 13855. Here the
following always applies: C
R
O
(reaching over)  C
R
T
(reaching through)
Example 1: Access protection with two beams for a hazardous point, where there is no
risk of reaching over:
C = 850 mm
Stopping/run-down time of the machine = 290 ms
Response time of the light path interruption = 30 ms
T = 290 ms + 30 ms = 320 ms = 0.32 s
S = 1600 × 0.32 + 850 = 1362 mm
Example 2: Access protection with three beams for a hazardous point, where there is a
risk of reaching over:
 Three-beam standard ESPE (300/400/1100 mm)
 Height of the top edge of the protective field: 1100 mm
 Height of the hazardous area: 1400 mm
As per EN ISO 13855 a resolution-dependent supplement C of 1100 mm applies (instead
of the previously usual 850 mm).
C = 1100 mm
Stopping/run-down time of the machine = 290 ms
Response time of the light path interruption = 30 ms
T = 290 ms + 30 ms = 320 ms = 0,32 s
S = 1600 × 0,32 + 1100 = 1612 mm
Note