Siemens OOHC740 - Page 101

Specifications
Technical data for OOH740
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Building Technologies
A6V10305793_m_en_
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Fire Safety
2016-02-15
Collective detector line
Detector line Operating voltage DC 14…28 V
Maximum current connection factor
See 'Collective maximum current
connection factor' table
Quiescent current at:
● Maximum current connection factor = 1 65…100 μA
● Maximum current connection factor = 1.25 80…125 μA
Current peak at:
● Maximum current connection factor = 1 150 μA
● Maximum current connection factor = 1.25 180 μA
Alarm voltage at:
● Alarm current = 1...15 mA DC 5…10 V
● Alarm current = 35 mA DC 18…22 V
● Alarm current = 50 mA DC 26…28 V
Alarm current at operating voltage =
DC 5...28 V
4…50 mA
Reset voltage UR:
● Alarm is reliably reset DC 0…2 V
● Alarm may possibly not be reset DC 2…4 V
Reset time at UR ≤ DC 2 V:
● Alarm is reliably reset >2 s
● Alarm may possibly not be reset 1…2 s
Protocol
Collective (with and without current
limitation)
Compatibility See 'List of compatibility'
Collective maximum current connection factor
Parameter set
Maximum current
connection factor
Resistance value in the detector
base
'Standard Plus' 1 -
'Suppression' 1.25 33 kΩ
'High Sensitive Fast' 1.25 68 kΩ