ABB 615 Series - Page 131

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
X130
mA
mA
RTD1
+
-
+
-
+
-
1
2
3
4
6
7
8
RTD2
5
GUID-9233377B-F015-46E7-A0D9-2B580F436B2E V2 EN
Figure 39: Two RTD and resistance sensors connected according to the 3-wire
connection for RTD/mA card
Resistor sensor
X130
mA
mA
RTD1
+
-
+
-
+
-
1
2
3
4
6
7
8
RTD2
5
GUID-F939E7EE-B932-4002-9D27-1CEA7C595E0B V2 EN
Figure 40: Two RTD and resistance sensors connected according to the 2-wire
connection for RTD/mA card
1MAC059074-MB A Section 3
Basic functions
615 series ANSI 125
Technical Manual