ABB Relion REC615 - Page 107

6RTD/2mA card
This card accepts two milliampere inputs and six inputs from the RTD sensors. The
inputs 1 and 2 are used for current measurement, whereas inputs from 3 to 8 are
used for resistance type of measurements.
RTD/mA input connection
Resistance and temperature sensors can be connected to the 6RTD/2mA board with
3-wire and 2-wire connections.
Resistor sensor
X110
mA
mA1
mA
mA2
RTD1
+
-
+
-
+
-
+
-
+
-
5
6
7
8
9
10
11
12
13
14
15
16
RTD2
RTD3
...
...
...
Figure 38: Three RTD sensors and two resistance sensors connected according to
the 3-wire connection for 6RTD/2mA card
1MRS758755 C
Basic functions
REC615 & RER615
Technical Manual
107