Siemens OOH740 - Page 33

Structure and function
Function
3
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108
Building Technologies
A6V10305793_m
_en_
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Fire Safety
2016-02-15
Overview of parameter sets for fire detection (collective detector line)
Parameter set in
point detector
OOH740
Resistance value in
the detector base
Flashing signal to display the set
parameter set in the first three
minutes following the detector line
being started up
'Standard Plus' - Once every 6 s
'Suppression'
33 kΩ
(resistor PSR720-1)
Twice every 6 s
'High Sensitive Fast'
68 kΩ
(resistor PSR720-2)
Three times every 8 s
If there is still a flashing signal on a point detector
OOH740
more than 3
minutes
after the detector line was started up, there is a fault. You will find more
information in chapter 'Internal alarm indicator in the case of ES <20 (OOH740
and OOHC740) [➙ 38]'.
T
he point detector
OOH740
is always operated in sensor mode 0 'Neural fire
detector' on a collective detector line.
The neural fire detector
OOHC740
cannot be operated in collective mode.
See also
2 Parameter sets: Sensor mode 0 'Neural fire detector' [➙ 53]
2 Parameter sets: Sensor mode 1 'Heat detector' [➙ 57]
2 Parameter sets: Sensor mode 2 'Smoke detector' [➙ 58]
2 Parameter sets for collective operation [➙ 60]
2 Internal alarm indicator in the case of ES <20 (OOH740 and
OOHC740) [➙ 38]