2BStructure and function
20BFunction
3
38 | 138
Building Technologies
007004_t_en_--
Fire Safety
2015-11-04
Information
displayed on the
detector
exchanger and
tester
Meaning
Measures
Any fault
message
2
Fault present
Detection is no longer guaranteed, or invalid
parameter setting
For FDOOT:
Failure of both optical sensors
For FDO:
Failure of the optical sensor
For FDT:
Failure of one or both thermal sensors
Remedy cause
Adjust parameter setting
Replace detector
Supply error
Check detector line voltage
Replace detector
Software error (Watchdog error)
Replace detector
Memory error
Replace detector
Communication error involving detector and
control panel
Remedy cause
1
Error messages on the detector exchanger and tester are always displayed in
English.
2
This status can be displayed together with other statuses, e.g. 'needed excha.'
(replacement necessary).
3.5.4
Line separator
All FDnet devices are equipped with a line separator.
The FDnet device is equipped with electronic switches which isolate the defective
part in case of a short-circuit on the detector line. The rest of the detector line
remains serviceable.
On a loop line all FDnet devices remain fully functional after a simple error.
3.5.5
Automatic recognition of the detector line protocol
The multiple protocol detectors FDOOT241-x/-Ax may communicate via different
detector line protocols. These detectors recognize the protocol on the detector line
(e.g. FDnet or collective) and automatically switch to the protocol in question. This
functionality facilitates commissioning in case of modernization, as no actions need
to be taken on the detector itself. For exceptions, see 'List of compatibility'.
You will find further information about migration and modernization in document
A6V10323158.
See also
