ABB Relion REC615 - Page 108

Resistor sensor
X110
mA
mA1
mA
mA2
RTD1
+
-
+
-
+
-
+
-
+
-
5
6
7
8
9
10
11
12
13
14
15
16
RTD2
RTD3
...
...
...
Figure 39: Three RTD sensors and two resistance sensors connected according to
the 2-wire connection for 6RTD/2mA card
X110
+
-
5
6
15
16
...
...
...
Transducer
Sensor
Shunt
(44 Ω)
...
...
...
Figure 40: mA wiring connection for 6RTD/2mA card
2RTD/1mA card
This type of card accepts one milliampere input, two inputs from RTD sensors and
five inputs from VTs. The Input 1 is assigned for current measurements, inputs 2
and 3 are for RTD sensors and inputs 4 to 8 are used for measuring input data from
VT.
Basic functions
1MRS758755 C
108 REC615 & RER615
Technical Manual