FFE FDL242 - Device Settings and Thresholds; Fire Threshold Configuration

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7. Settings
Fire Threshold
Configured by Siemens Fire Control Panel
All parameter sets are EN54-12 approved
“Alarm for n % attenuation” indicates the percentage of beam attenuation which leads to a fire alarm.
Setting the parameter set depends on the detector line FDnet, C-NET.
The procedure for parameter setting via the control panel is described in the Siemens Fire Control Panel documentation.
NOTICE: In case of a direct replacement of a FDL241-9 by a FDL242 take into account the differences in the fire thresholds!
Parameter Sets
Parameter Set Alarm for n %
attenuation
Response Value
(EN54-12)
No. Name
01 Standard with beam interruption = fault 58 % 35 % (1.87 dB)
02 Standard with beam interruption = alarm 58 % 35 % (1.87 dB)
03 Sensitive with beam interruption = fault 50 % 29 % (1.49 dB)
04 Sensitive with beam interruption = alarm 50 % 29 % (1.49 dB)
05 Very sensitive with beam interruption = fault 44 % 25 % (1.25 dB)
06 Very sensitive with beam interruption = alarm 44 % 25 % (1.25 dB)
• Avoid direct eye exposure to laser beam.
• Follow local regulations for use of products with Class 3R lasers