Structure and function
Function
3
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Building Technologies
A6V10305793_m_en_--
Fire Safety
2016-02-15
3.3.3 Diagnosis levels
Operating the point detector on the C-NET:
The point detector monitors its operation largely autonomously. The signals of all
sensors are permanently monitored.
The following components in particular should be monitored for correct
functionality:
●
Temperature sensors
●
Light emitters
●
Light receivers
The following diagnosis levels are derived from the different control measurements:
●
Normal
●
Observe information
●
Replacement recommended
●
Replacement necessary
●
Fault
When an error occurs which impairs the correct functionality of the device, a fault
message is reported to the control panel.
The CO sensor can only be monitored for failure. For a functional test, the CO
sensor must be tested with test gas.
Operating the point detector OOH740 in collective mode:
When an error occurs which impairs the correct functionality of the device, a fault
message is reported to the control panel.
●
All of the devices installed downstream of the faulty point detector and the end-
of-line unit are automatically disconnected.
●
A line fault is indicated on the collective control panel.
●
The faulty point detector indicates the fault by making the internal alarm
indicator flash. Flashing frequency: Two flashes every 4 s.
