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3-1-2 Floating Blanking Function
If the number of the blocked beam channels is less than the set number of the beam channels, the
control output (OSSD 1 / 2) of SF4C series is not turned "OFF."
This function is useful when an obstacle moves within the sensing area.
The factory setting of this function is "invalid."
The following items can be set.
Set number of beam channels
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Invalid setting of both end beam channels (only for Ver. 2.1 of SF4C series)
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‡ SET (Valid)
‡ &/5 ,QYDOLG
Non-serial beam channel setting
‡ SET (Valid)
‡ CLR (Invalid) :
[For use in Europe (EU) (as EN 999)] (Also applicable to ISO 13855 / JIS B 9715)
(For intrusion direction perpendicular to the sensing area)
<In case that the minimum sensing object is over ø40mm>
Equation
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 1,600 (mm/sec.) for calculation
T : Response time of total equipment (sec.)
T = T
m
T
: Maximum halting time of machine (sec.)
m
T
: Response time of SF4C series (sec.)
SF4C
C : Additional distance (mm)
C = 850 (mm)
<Minimum sensing object>
SF4C-H SF4C-H -J05
© Panasonic Industrial Devices SUNX Co., Ltd. 2013 MJE-SFCHC No.0037-80V
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case either end of the beam channel is blocked, the control output (OSSD 1 / 2) of
SF4C series is turned "OFF" regardless of the set number of the beam channels.
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ing both end beam channels.
:
Even if the beam channels are blocked discontinuously in the set beam channels,
the control output (OSSD 1 / 2) of SF4C series is turned "ON." (Discontinuous mode)
When the beam channels are blocked discontinuously even in the set beam
channels, the control output (OSSD 1 / 2) of SF4C series is turned "OFF."
(Continuous mode)
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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 SF4C series.
Before designing the system, refer to the relevant laws and standards of the region
where SF4C series is to be used and then install SF4C series.
The minimum sensing object differs depending on the set number of the beam channels.
S = K × T + C
+ T
SF4C
Invalid
ø25mm
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when an obstacle exists in the sensing range regardless of the incident light intensity.
Functional Descriptions
Floating blanking function
1 beam channel
2 beam channels
ø45mm
Valid
3 beam channels
ø65mm
ø85mm
10
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