© Panasonic Industrial Devices SUNX Co., Ltd. 2014
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<Calculation Example>
●
Calculation Example 1: For use in Europe
(OFF response time: 14ms or less, minimum sensing object diameter: 25mm)
First, calculate with K=2,000.
S = K × T + C
= K × (T
m
+ T
SF4B
) + 8 × (d - 14)
= 2,000 × (T
m
+ 0.014) + 8 × (25 - 14)
= 2,000 × T
m
+ 2,000 × 0.014 + 8 × 11
= 2,000 × T
m
+ 28 + 88
= 2,000 × T
m
+ 116
If the result is:
1) In case S < 100 (mm)
Safety distance S is taken as 100 (mm)
2) In case 100 ≤ S ≤ 500 (mm)
Safety distance S is taken as 2,000 × T
m
+ 116 (mm)
3) In case S > 500 (mm)
S = K’ × (T
m
+ T
SF4B
) + 8 × (d - 14)
= 1,600 × (T
m
+ 0.014) + 8 × (25 - 14)
= 1,600 × T
m
+ 1,600 × 0.014 + 8 × 11
= 1,600 × T
m
+ 22.4 + 88
= 1,600 × T
m
+ 110.4
then, calculate again.
If the result is:
4) In case S < 500 (mm)
Safety distance S is taken as 500 (mm)
5) In case S > 500 (mm)
Safety distance S is taken as 1,600 × T
m
+ 110.4 (mm)
In case this device is installed in a system with a maximum halting time of 0.1 (sec.)
S = 2,000 × T
m
+ 116
= 2,000 × 0.1 + 116
= 316
Since this value matches with Case 2) above, S is 316 (mm)
In case this device is installed in a system with a maximum halting time of 0.4 (sec.)
S = 2,000 × T
m
+ 116
= 2,000 × 0.4 + 116
= 916
Since this value matches with Case 3) above,
S = 1,600 × T
m
+ 110.4
= 1,600 × 0.4 + 110.4
= 750.4
Since this value matches with Case 5) above, S is 750.4 (mm)
Ramco National
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