Panasonic WUME-SF4D-2 Instruction Manual page 20

Protection Area
[For use in Europe (EU) (based on EN ISO 13855)] (Also applies to JIS B 9705)
(For intrusion perpendicular to the sensing area)
<When the minimum sensing object is ø40mm or less>
● Equation 1
S: Safety distance (mm)
Minimum required distance between the sensing area plane and the dangerous part
of the machine
K: Intrusion speed of person or object (mm/sec.)
Normally 2,000 (mm/sec.) is used.
T: Response time of overall system
T = T
T : Maximum response time of machine (sec.)
m
T
SF4D
C: Additional distance calculated from the minimum sensing object of the device (mm)
The value of C cannot be less than 0.
C = 8 × (d − 14)
d: Diameter of minimum sensing object (mm)
<Reference>
● When calculating the safety distance S, the following five cases must be considered.
First calculate using K = 2,000 (mm/sec.) in the above equation. Consider these three cases for
the result: 1) S < 100, 2) 100 ≤ S ≤ 500, and 3) S > 500. If the result of the calculation is 3) S >
500, calculate again using K = 1,600 (mm/sec.). Consider these two cases for the result: 4) S ≤
500 and 5) S > 500.
For details, refer to "Calculation example 1: For use in Europe".
● When the device is used in "PSDI Mode", an appropriate safety distance S must be calculated.
For details, refer to the standards and regulations that apply in your region or country.
<When the minimum sensing object is greater than ø40mm>
● Equation 1
S: Safety distance (mm)
Minimum required distance between the sensing area plane and the nearest dan-
gerous part of the machine
K: Intrusion speed of person or object (mm/sec.)
Normally 1,600 (mm/sec.) is used.
T: Overall response time of system
T = T
T : Maximum response time of machine (sec.)
m
T
SF4D
C: Additional distance calculated from the minimum sensing object of the device (mm)
C = 850 (mm)
20
S = K × T + C
+ T
m SF4D
: Response time of device (sec.)
S = K × T + C
+ T
m SF4D
: Response time of device (sec.)
© Panasonic Industrial Devices SUNX Co., Ltd. 2016