Panasonic SF4B V2 Series Instruction Manual page 18

[For use in the United States of America (as per ANSI B11.19)]
Equation 2
Ds 6DIHW\ GLVWDQFH PP
Minimum required distance between the sensing area surface and the danger-
ous parts of the machine
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sider possible factors including physical ability of operators.
7V Halting time calculated from the operation time of the control element (air valve, etc.) (sec.)
7F Maximum response time of the control circuit required for functioning the brake (sec.)
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The following equation holds when the machine is equipped with a brake monitor.
T
T
When the machine is not equipped with a brake monitor, it is recommended that
20% or more of (Ts + Tc) is taken as additional halting time.
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pf
the device (mm)
6)%) 9! Dpf = 23.8mm
6)%+ 9! Dpf = 61.2mm
6)%$ 9! Dpf = 129.2mm
Dpf = 3.4 × (d - 0.276) (inch)
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<Reference>
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<Reference>
Since the calculation above is performed by taking 1 (inch) = 25.4 (mm), there is a slight difference be-
tween the representation in (mm) and that in (inch). Refer to the relevant standard for the details.
<Calculation Example>
Calculation Example 2 For use in the United States of America
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Ds = K × (Ts + Tc + T
= 63 × (Ta + 0.014) + 3.4 × (d - 0.276) (inch)
= 63 × (Ta + 0.014) + 3.4 × (0.552 - 0.276)
= 63 × Ta + 63 x 0.014 + 3.4 × 0.276
= 63 × Ta + 1.8204
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In case this device is installed in a system with a maximum halting time 0.1 (sec.)
Ds
= 63 × Ta + 1.82
= 63 × 0.1 + 1.82
= 8.12 (inch)
§  PP
Hence, as per the calculations
<Reference>
Since the calculation above is performed by taking 1 (inch) = 25.4 (mm), there is a slight difference be-
tween the representation in (mm) and that in (inch). Refer to the relevant standard for the details.
17
Ds = K
= Ta - (Ts + Tc)
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© Panasonic Industriar Devices SUNX Co., Ltd. 2012 ME-SF4BV2-05
(Ts + Tc + T
×
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T ) + D
bm pf
D s is 206.2 (mm).
+ T ) + D
bm pf