8
SignalFire Telemetry
Rev 1.3
RTD Connection
The RTD interface board has three jumpers, they must be configured for the type of RTD to be connected as
follows:
2-WIRE: Install Jumpers J2 & J3
3-WIRE: Install Jumpers J1 & J2
4-Wire: No Jumpers Installed
After configuring the jumpers for the RTD, connect the RTD wires to the interface board per the diagrams
below.
E
X
-
V
-
V
+
E
X
+
RTD
E
X
-
V
-
V
+
E
X
+
RTD
E
X
-
V
-
V
+
E
X
+
RTD
2-Wire RTD Connection
3-Wire RTD Connection
4-Wire RTD Connection
Any error with the RTD or interface board will be shown in the Status register. See table on Page 10 for details.
