ABB RELION Series Technical Manual page 103

1MRS758755 A
REC615 and RER615
Technical Manual
RTD/mA input connections
The examples of 3-wire and 2-wire connections of resistance and temperature sensors
to the 2RTD/1mA board are as shown:
Resistor sensor
GUID-9233377B-F015-46E7-A0D9-2B580F436B2E V2 EN
Figure 42: Two RTD and resistance sensors connected according to the 3-wire
connection for RTD/mA card
Resistor sensor
GUID-F939E7EE-B932-4002-9D27-1CEA7C595E0B V2 EN
Figure 43: Two RTD and resistance sensors connected according to the 2-wire
connection for RTD/mA card
Section 3
Basic functions
X130
+
mA
1
mA
-
2
+
3
RTD1
-
4
5
+
6
RTD2
-
7
8
X130
+
mA
1
mA
-
2
+
3
RTD1
-
4
5
+
6
RTD2
-
7
8
97