Structure and function
Function
3
40 | 108
Building Technologies
A6V10305793_m_en_--
Fire Safety
2016-02-15
3.3.7 Advanced flashing behavior of the alarm indicators in the
case of ES
≥
20 (OOH740 and OOHC740)
Internal alarm indicators
The table below describes the flashing behavior of internal alarm indicators in
addressed mode.
You will find information on the flashing behavior of the OOH740 in collective mode
in chapter 'Internal alarm indicator in the case of ES <20 (OOH740 and OOHC740)
38]'.
Several flashing patterns are available for normal operation. The flashing pattern
is selected using the 'Cerberus-Engineering-Tool' software.
Operating condition
Flashing mode
Graphic
Alarm
Display priority: 1
IAI flashes red
once a second
Test mode
Display priority: 1
Without alarm IAI flashes red
twice every
4 seconds
With alarm
IAI flashes red
twice every
4 seconds and red
every second in-
between
Fault
1
Display priority: 2
IAI off
Normal
Display priority: 3
Configuration
1
(
default
)
IAI off
Configuration
2
IAI flashes red
every 10 seconds
1
Or 'Configuration 1' mode active.
The display priority ensures that important messages are prioritized in the flashing
behavior. Highest display priority: 1.
Example: If a detector is displaying 'Fault' and then an alarm is detected, the
flashing mode will change from 'Fault' to 'Alarm'.
Not all fire control panels support the flashing patterns described.
A steady-on flashing mode for the alarm and an alternative flashing mode for
normal operation can be set using the 'Cerberus-Engineering-Tool' software.
t
0
1
2
3
4
5
6
7
8
9
10
12
11
[s]
t
0
1
2
3
4
5
6
7
8
9
10
12
11
[s]
t
0
1
2
3
4
5
6
7
8
9
10
12
11
[s]
t
0
1
2
3
4
5
6
7
8
9
10
12
11
[s]
t
0
1
2
3
4
5
6
7
8
9
10
12
11
[s]
t
0
1
2
3
4
5
6
7
8
9
10
12
11
[s]
