Panasonic SF2B Series Instruction Manual page 15

[For use in Europe (EU) (as EN 999)] (Also applicable to ISO 13855)
(For intrusion direction perpendicular to the sensing area)
<In case that the minimum sensing object is ø40mm or less (SF2B-H□)>
● Equation 1
S : Safety distance (mm)
Minimum required distance between the sensing area surface and the danger-
ous parts of the machine
K : Intrusion velocity of operator's body or object (mm/sec.)
Taken as 2,000 (mm/sec.) for calculation
T : Response time of total equipment (sec.)
T = T
T
T
C : Additional distance calculated from the size of the minimum sensing object of
the device (mm)
However, the value of C cannot be under 0.
C = 8 × (d - 14)
C: SF2B-H□ ... 104 (mm)
d: SF2B-H□ ... 27 (mm)
<Reference>
● For calculating the safety distance S, there are the following five cases.
First calculate by substituting the value K = 2,000 (mm/sec.) in the equation above. Then, classify the ob-
tained value of S into three cases, 1) S < 100, 2) 100 ≤ S ≤ 500, and 3) S > 500.
For Case 3) S > 500, recalculate by substituting the value K = 1,600 (mm/sec.). After that, classify the
calculation result into two cases, 4) S ≤ 500 and 5) S > 500. For details, refer to "Calculation Example 1
For use in Europe."
● When this device is used in the "PSDI Mode," an appropriate safety distance S must be calculated. For
details, be sure to refer to the standards or regulations applicable in each region or country.
<In case that the minimum sensing object is over ø40mm (SF2B-A□)>
● Equation
S : Safety distance (mm)
Minimum required distance between the sensing area surface and the danger-
ous parts of the machine
K : Intrusion velocity of operator's body or object (mm/sec.)
Taken as 1,600 (mm/sec.) for calculation
T : Response time of total equipment (sec.)
T = T
T
m
T
SF2B
C : Additional distance calculated from the size of the minimum sensing object of
the device (mm)
C = 850 (mm)
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S = K × T + C
+ T
m SF2B
: Maximum halting time of machine (sec.)
m
: Response time of this device (sec.)
SF2B
S = K × T + C
+ T
m SF2B
: Maximum halting time of machine (sec.)
: Response time of this device (sec.)
15