Sunx SF4B 01 Series, Инструкция по эксплуатации

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SUNX Limited MJE-SF4B01 No.0005-03V
- 18 -
[For use in the United States of America (as per ANSI B11.19)]
Equation 2 S = K x (T
s
+ T
c
+ T
SF4B01
+ T
bm
) + Dpf
S : Safety distance (mm)
Minimum required distance between the sensing area surface and the dangerous
parts of the machine
K : Intrusion speed {Recommended value in OSHA is 63 (inch/s) [ 1,600 (mm/s)] }
ANSI B11.19 does not define the intrusion speed ‘K’. When determining K, con-
sider possible factors including physical ability of operators.
T
s
: Halting time calculated from the operation time of the control element (air
valve, etc.) (s)
T
c
: Maximum response time of the control circuit required for functioning the
brake (s)
T
SF4B01
: Response time of this device (s)
T
bm
: Additional halting time tolerance for the brake monitor (s)
The following equation holds when the machine is equipped with a brake monitor.
T
bm
= T
a
- (T
s
+ T
c
)
T
a
: Setting time of brake monitor (s)
When the machine is not equipped with a brake monitor, it is recommended that
20% or more of (T
s
+ T
c
) is taken as additional halting time.
Dpf : Additional distance calculated from the size of the minimum sensing of the
sensor (mm)
SF4B-F -01 Dpf = 23.8mm
SF4B-H -01 Dpf = 61.2mm
SF4B-A -01 Dpf = 129.2mm
Dpf = 3.4 x (d - 0.276) (inch)
3.4 x (d - 7) (mm)
d: Minimum sensing object diameter 0.552 (inch) 14 (mm) SF4B-F -01
Minimum sensing object diameter 0.985 (inch) 25 (mm) SF4B-H -01
Minimum sensing object diameter 1.772 (inch) 45 (mm) SF4B-A -01
Note that the value of Dpf cannot be 0 or less.
<Reference>
Since the calculation above is performed by taking 1 (inch) = 25.4 (mm), there is a slight difference between 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
[OFF response time: 14ms or less, minimum sensing object diameter: 0.552 inch 14 (mm)]
S = K x (T
s
+ T
c
+ T
SF4B01
+ T
bm
) + Dpf
= 63 x (T
a
+ 0.014) + 3.4 x (d - 0.276) (inch)
= 63 x (T
a
+ 0.014) + 3.4 x (0.552 - 0.276)
= 63 x T
a
+ 63 x 0.014 + 3.4 x 0.276
= 63 x T
a
+ 1.8204
63 x T
a
+ 1.82 (inch)
In case this device is installed in a system with a maximum halting time 0.1 (s)
S = 63 x T
a
+ 1.82
= 63 x 0.1 + 1.82
= 8.12 (inch)
206.248 (mm)
Hence, as per the calculations S is 206.2 (mm).
<Reference>
Since the calculation above is performed by taking 1 (inch) = 25.4 (mm), there is a slight difference between the
representation in (mm) and that in (inch). Refer to the relevant standard for the details.