Planning
Technical Ambient Supervision Message
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Building Technologies
A6V10305793_m_en_--
Fire Safety
2016-02-15
Example of temperature monitoring caused by hysteresis:
Figure 10: 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 ambient temperature of 35 °C is reached, the point detector sends a
message to the control panel. As long as the hysteresis range is not undershot, the
message is sent.
In the example shown, the message is no longer sent once the ambient
temperature of 30 °C (threshold value minus hysteresis range) is undershot.
t
20
25
30
35
1
2
t
0
2
3
4
