Planning
Technical Ambient Supervision Message
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Building Technologies
A6V10209291_h_en_--
Fire Safety
2016-03-03
Example of temperature monitoring caused by hysteresis:
Figure 9: Ambient supervision output signal when the operating temperature threshold value of 35 °C is
exceeded and a hysteresis range of 5 °C is selected. The diagram below shows the progression of the
output signal.
1 Temperature progression
3 Danger level ('0' or '2')
2 Hysteresis range
4 Output signal
When an operating temperature of 35 °C is reached, the point detector sends a
message with 'Danger level 2' to the control panel.
In the example shown, a further message with 'Danger level 0' is sent once the
operating temperature of 30 °C (threshold value minus hysteresis range) is
undershot.
t
20
25
30
35
1
2
t
0
2
3
4
