Table of Contents
Advertisement
Engineering
9
Detector line
9.4.7 Resetting detection module
9.4.8 Calibrating an FDnet/C-NET detector line
100 | 151
7. Select 'Quit locate' and press
A confirmation window is displayed.
8. Press
to confirm.
If the command of 'Quit locate' is not performed within one hour, the devices quit
from the 'Locate' mode automatically.
Use the 'Reset detection module' function to reset the detection module from the
menu when the detection module reports a fatal fault.
1. Press
on the keypad.
The 'Main menu' window is open.
2. Select 'Engineering' and press
The 'Engineering' window is open.
3. Select 'Detector line' and press
The 'Detector line' window is open.
4. Select 'Reset detection module' and press
A confirmation dialog window is open.
5. Press
to confirm.
A message 'Line startup is in progress...' is displayed.
The detection module is reset and the fatal fault disappears once the above
message disappears.
WARNING
Impermissible line configuration
An impermissible line configuration can cause the alarm devices connected to this
line to be supplied with insufficient power in the event of a fire. This prevents the
alarm from sounding in the corresponding parts of a building. This can cause
serious injuries or death.
●
Make sure that all lines of a line card have a permissible line configuration by
calibrating them successfully.
Line calibration enables users to check whether sufficient power is being supplied
to all devices in an installed line during commissioning and ongoing operations; the
power supply can even be checked in the event of an alarm. This is particularly
helpful when the line topology or power-relevant configuration parameters of a line
are changed.
Another objective of line calibration is to determine how much additional line
resistance ΔR
is possible before the line devices fall below the required supply
max
voltage in case of corrosion, gradual cable breakage, or thermal drift.
In the event of thermal drift, the line resistance R
In an unheated warehouse, the difference in temperatures under the ceiling in
summer and winter could amount to 50 °C. This could lead to the line resistance
being ≈ 20 % higher in summer than it is in winter.
.
.
.
.
increases by ≈ 0.4 %/ °C.
Line
A6V10421795_en--_k
Advertisement
Table of Contents
