Panasonic SF4B Series

18© Panasonic Industrial Devices SUNX Co., Ltd. 2016
Functional Descriptions
3-2-2 Floating Blanking Function
This function is set in each SF4B / SF4B<V2> series.
If the number of the blocked beam channels is less than the set number of the beam channels, the
safety output 1 / 2 of SF-C14EX are not turned “OFF.”
This function is useful when an obstacle moves within the sensing area of SF4B / SF4B<V2> series.
The factory setting of this function is “ineffective.”
The following items can be set.
Set number of beam channels
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Ineffective setting of both end beam channel
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be selected.
 SET (Effective) : The floating blanking function becomes ineffective for the both end beam
channels. If either end of the beam channel is blocked, the safety output 1 /
2 of SF-C14EX are turned “OFF” regardless of the set number of the beam
channels.
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cluding both ends beam channels.
Non-serial beam channel setting
 SET (Effective) : Even if the beam channels are blocked discontinuously in the set beam
channels, the safety output 1 / 2 of SF-C14EX are turned “ON.”
(Discontinuous mode)
 CLR (Ineffective) : When the beam channels are blocked discontinuously even in the set beam
channels, the safety output 1 / 2 of SF-C14EX are turned “OFF.”
(Continuous mode)
[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>
Ɣ Equation S = K × T + C
S : Safety distance (mm)
Minimum required distance between the sensing area surface and the dangerous 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
m
+ T
SFC14EX
T
m
: Maximum halting time of machine (sec.)
T
SFC14EX
: Response time of SF-C14EX (sec.)
C : Additional distance calculated from the size of the minimum sensing object of the SF4B /
SF4B<V2> series (mm)
However, the value of C cannot be under 0.
C = 8 × (d - 14)
d: Diameter of the minimum sensing object (mm)
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comes larger, and the safety distance is longer as well. For the calculation of the safety
distance, refer to the instruction manual enclosed with SF4B / SF4B<V2> series.
Ɣ Before designing the system, refer to the relevant laws and standards of the region
where SF4B / SF4B<V2> series and SF-C14EX are to be used and then install SF4B /
SF4B<V2> series and SF-C14EX.
Ɣ The minimum sensing object differs depending on the set number of the beam channels.
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