Function
ASD 531, Technical description, T 140 416 en
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2.2.13
Fault triggering
If a fault occurs on the ASD 531, the “Fault” relay is de-energised and the “
Fault
” display is activated. With the SD memory
card, the fault profile can also be used in the event of a fault (see also Sec. 8.5.4.3 and 10.3.1). The following events trigger a
fault (list is incomplete):
•
Fault: airflow (after expiry of
LS
delay time)
•
Fault: fan (fan limit data exceeded or fallen short of, tacho signal)
•
Fault: initial reset
•
Fault: smoke sensor dusty / dirty
•
Fault: smoke sensor missing; communication disrupted; other
•
AMB 31 communication fault to XLM 35 / RIM 36 (individual)
•
Emergency fault (microcontroller failure)
•
Undervoltage fault (13.9 VDC, +0 / –0.3 V)
•
Fault: power supply (no voltage on the ASD, no “
Fault
” display)
•
ASD inactive via “External reset” input.
Notice
The “Fault” relay has picked up in the release state
contact Te. 12/10 closed, 12/11 open (ASD 531 under
voltage; no fault event present).
2.2.14
Event memory
The ASD 531 has an event memory capable of storing up to 1,000 events. The latest (i.e. most recent) event is always placed
in the first position. If the memory exceeds 1,000 events, the oldest event is deleted. The event memory as a whole can be de-
leted only by the manufacturer. The event memory be read out using an SD memory card.
2.2.15
Data logging on the SD memory card
Measurement values
: All relevant measurement values are written to the SD memory card every second for each sensing
tube and saved in
Log-Files
(*.xls file). After 28,800 entries (corresponding to 8 hours with an SD memory card interval of 1 s),
a new
Log-File
is automatically generated. A total of 251
Log-Files
(L000.xls to L250.xls) can be generated for long-term log-
ging. After the last
Log-File
the oldest one (L000.xls) is overwritten. The 251 log files are sufficient to cover 83 days of data
logging (with SD memory card interval of 1 s). The
log files
can be opened in Excel and the data processed with the diagram
assistant to create charts.
Events
: All events occurring in the ASD 531 are written to the
Event-Files
(*.aev file). After 64,000 events a new
Event-File
is
created automatically. A total of 10
Event-Files
(E000.aev to E009.aev) can be generated for long-term logging. After the last
Event-File
the oldest one (E000.aev) is overwritten. The 10
Event-Files
are sufficient to log over 640,000 events. The
Event-
Files
can be opened with a text editor. Please refer to Sec. 8.5.4 for the interpretation of the events.