18© Panasonic Electric Works SUNX Co., Ltd. 2011 MJE-SFBHC No.0024-49VFunctional Descriptions3-2-2 Floating Blanking FunctionThis function is set in each SF4B / SF4B series.If the number of the blocked beam channels is less than the set number of the beam channels, thesafety 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 series.The factory setting of this function is “ineffective.”The following items can be set.Set number of beam channels $&{ = & & " Y+ + QIneffective setting of both end beam channel "
" = & & $ be selected._ SET (Effective) : The floating blanking function becomes ineffective for the both end beamchannels. 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 beamchannels._ G{@ " Y~ = & & $ " $ -cluding both ends beam channels.Non-serial beam channel setting_ SET (Effective) : Even if the beam channels are blocked discontinuously in the set beamchannels, 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 beamchannels, 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) Equation S = K × T + CS : Safety distance (mm)Minimum required distance between the sensing area surface and the dangerous parts ofthe machine.K : Intrusion velocity of operator’s body or object (mm/sec.)Taken as 2,000 (mm/sec.) for calculationT : Response time of total equipment (sec.)T = T m + TSFC14EXT 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 series (mm)However, the value of C cannot be under 0.C = 8 × (d - 14)d: Diameter of the minimum sensing object (mm) & = & & + ? $$$ &: -comes larger, and the safety distance is longer as well. For the calculation of the safetydistance, refer to the instruction manual enclosed with SF4B / SF4B series. Before designing the system, refer to the relevant laws and standards of the regionwhere SF4B / SF4B series and SF-C14EX are to be used and then install SF4B /SF4B series and SF-C14EX. The minimum sensing object differs depending on the set number of the beam channels.
