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Inputs
18
NO/NC Double Resistor 1K
This is the traditional Software House method of supervision where 1K
is considered Secure
and 500
or
are considered Alert. Notice that the wiring is different for NO and NC.
Figure 6:
NO / NC Double Resistor 1K
This method will report:
Short
Alert (500 ohms)
Normal (1K)
Alert (2K)
Open (>30K)
Line Fault (Any unexpected value) Usually due to wrong value resistors or faulty
resistors.
For UL Listed products,
burglar alarms must be supervised.
Содержание iSTAR Edge
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