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Orthogonal (right-angled) approach

Calculation wizard according to EN ISO 13855:2010

The recommendations of this wizard do not lay any claim to being complete. For the safe and correct use and installation of the products, the relevant standards and regulations in their currently valid version must be followed. Leuze electronic GmbH + Co. KG assumes no liability for damage resulting from the use of this wizard or for the accuracy of the generally applicable standards and directives.

Calculation of the minimum distance with perpendicular approach and a resolution of ≤ 40 mm

The minimum distance SRT is calculated using the following formula:

SRT [mm] = (K[mm/ms] x T [ms]) + CRT [mm]

SRT– Minimum distance between the protective field and point of operation
K – Approach speed
T: Stopping time of the entire system
CRT - Constant additional distance depending on the detection capability of the protective device: CRT = 8 x (d[mm] – 14 mm)


Note: In addition, the table value for CRO (overlapping) must be determined if overlapping is possible. If CRO > CRT, the value of CRO is to be used instead of CRT to determine the minimum distance.

Initially, the value of 2.0 mm/ms is used for K. If the calculation results in SRT > 500 mm, the calculation may be repeated with K = 1.6 mm/ms. The result for SRT must be at least 500 mm in the second step (if the calculated value is lower, SRT is set to 500 mm).
Attention: The distance S to the point of operation must always be at least 100 mm, even if a lower value was calculated.

Calculation of the minimum distance with perpendicular approach and a resolution of > 40 mm

Note: This formula applies to multiple light beam safety devices, safety light curtains and safety laser scanners with corresponding resolution.

The minimum distance SRT is calculated using the following formula:

SRT [mm] = (K[mm/ms] x T [ms]) + 850 mm

SRT– Minimum distance between the protective field and point of operation
K – Approach speed: 1.6 mm/ms
T: Stopping time of the entire system

S: Minimum distance
a: Height of the bottom beam above the reference plane
b: Height of the top beam above the reference plane

 

Note: The table value for CRO (reach-over) must also be determined. As a rule, this is greater than 850 mm and must then be used in the formula instead of 850 mm!

 

 

Height of
danger
zone

 

Height of top edge of protective field of electro-sensitive protective equipment
900 1 000 1 100 1 200 1 300 1 400 1 600 1 800 2 000 2 200 2 400 2 600

 

Additional distance to the danger zone  CRO
2 600 0 0 0 0 0 0 0 0 0 0 0 0
2 500 400 400 350

300

 300 300 300 300 250 150 100 0
2 400 550 550 550 500 450 450 400 400 300 250 100 0
2 200 800 750 750 700 650 650 600 550 400 250 0 0
2 000 950 950 850 850 800 750 700 550 400 0 0 0
1 800 1 100 1 100 950 950 850 800 750 550 0 0 0 0
1 600 1 150 1 150 1 100 1 000 900 850 750 450 0 0 0 0
1 400 1 200 1 200 1 100 1 000 900 850 650 0 0 0 0 0
1 200 1 200 1 200 1 100 1 000 850 800 0 0 0 0 0 0
1 000 1 200 1 150 1 050 950 750 700 0 0 0 0 0 0
800 1 150 1 050 950 800 500 450 0 0 0 0 0 0
600 1 050 950 750 550 0 0 0 0 0 0 0 0
400 900 700 0 0 0 0 0 0 0 0 0 0
200 600 0 0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0 0 0 0

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