Siemens OH720 - Smoke Detector Technical Data

7BSpecifications
41BSmoke detector technical data
8
56
| 64
Building Technologies
A6V10212047_m_en_--
Fire Safety
2015-05-04
8.2 Smoke detector technical data
The following section lists the technical data for the smoke detector OP720.
You will find information on approvals, CE marking, and the relevant EU directives
for this device (these devices) in the following document(s); see 'Applicable
documents' chapter:
● Document A6V10202198
Detector line
Operating voltage (modulated) DC 12…33 V
Operating current (quiescent) Typ. 220 μA
Maximum current connection factor 1
Quiescent current connection factor 1
Address connection factor 1
Separator connector factor 1
Protocol C-NET
Compatibility See 'List of compatibility'
Line separator
Line voltage:
● Nominal DC 32 V (= V
nom
)
● Minimum DC 12 V (= V
min
)
● Maximum DC 33 V (= V
max
)
Voltage at which the line separator opens:
● Minimum DC 7.5 V (= V
SO min
)
● Maximum DC 10.5 V (= V
SO max
)
Permanent current when switches are closed: Max. 1.5 A (= I
C max
)
Switching current (e.g., in the event of a short-
circuit)
Max. 2 A (= I
S max
)
Leakage current when switches are open: Max. 1 mA (= I
L max
)
Serial impedance when switches are closed: Max. 0.4 Ω (= Z
C max
)
The line separator is closed via an actuation signal from the control panel. Required line
voltage: DC 12...33 V (normal range)
External alarm indicators
Number of external alarm indicators that can
be connected
Max. 2
Voltage DC 9…30 V
Current 10…16 mA
Device characteristics
Response sensitivity
at 0.2 m/s (typ.)
1.8 or 2.5 %/m (depending on the
parameter set)
Permissible wind speed Max. 5 m/s
Compensation speed ≤1/45 voltage increase for detection/h
Flashing interval times AI:
● Bright 15 ms
● Dark 1 s