Rockwell Automation T7419 ICS Regent+Plus Fire Detector Input Modules User Manual
Page 9
Fire Detector Input Modules (T7419)
P D - 7 0 3 2 M a r - 0 6
9
Matching the Input Thresholds to Specific
Field Devices
The Fire Detector input module has a input characteristic
load-line that is illustrated in Figure 3.
Figure 3. Input Characteristics of the Fire Detector Input
This figure plots the input voltage versus loop current. Along
the curve, several points are plotted which indicate the loop
resistance that produces the load-line characteristics. When
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