Triple IR Flame Detectors
FV400
Fixing Instructions Doc. version 2
11/20
4-20 mA Source
Fig. 9: 4-20mA Source Wiring Diagram
Fit link HDR2 to connect 4-20 mA+ to 24 V.
Ancillary power is required for RS485, Window Heater and Video.
Either use the Main Detector Supply by fitting HDR3 and HDR4 or use a separate Ancillary Supply (see Fig. 11).
Other options can be used at the same time as the 4-20 mA output. See Figs. 10 to 12 for wiring of Ancillary
Power, Walk-test Input, Remote Indicator Output, RS485 and Video Output.
+24V
0V
4-20mA SOURCE
Monitor current drawn
from Line (+24V) Supply
LINKS
HDR2
Select SOURCE
Mode
