Honeywell Sensepoint XCD RFD, Technical Handbook

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Sensepoint XCD RFD Technical Manual SPXCDHMRFEN Issue 4_08-2016
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6.1 Transmitter Wiring
The Sensepoint XCD RFD transmitter may be wired in either Current SOURCE or Current
SINK configuration. These two options are offered to allow greater flexibility in the type of
control system that it can be used with. SOURCE/SINK is selectable via the switch located
on the back side of the display module; accessible by removing the display module during
installation / commissioning (see section 9).
Caution: All electrical connections should be made in accordance with any relevant
local or national legislation, standards or codes of practice.
Caution: 250ohm load resistor (RL) is installed in the factory, In case of connection
with controller, this resistor should be removed because controller has load resistor
internally.
Note: Terminate cable screen at detector or controller, not both.
XCD Source 3 Wire 4-20mA (Source)
XCD Sink 3 Wire 4-20mA (Sink)
Controller
+VE
Signal
1
2
3
Detector
+VE
Signal
-VE
R
L
-VE
1
3
2
Controller
+VE
Signal
1
2
3
Detector
+VE
Signal
-VE
R
L
-VE
1
3
2
R
L
Controller
+VE
Signal
1
2
3
Detector
+VE
Signal
-VE
-VE
1
3
2
R
L
Controller
+VE
Signal
1
2
3
Detector
+VE
Signal
-VE
-VE
1
3
2