Terminal Diagram Of Rex 521: Sensor - ABB REX 521 Technical Reference Manual, General

REX 521
4.2.5.
*) Connected to U12b in H01S and H03S
**) The jumper is not assembled by default
when the protection relay is delivered
Fig. 4.2.5.-1

Terminal diagram of REX 521: Sensor

52
Protection Relay
Technical Reference Manual, General
Terminal diagram of REX 521: Sensor
X1.1
27
25
24
22
21
19
18
100V
16
15
0,2A
14 1A
13
12
1A
11
5A
10
9
8
7
6
5
4
3
2
1
Voltage input, U
X2.1
3
DIFF
Voltage input, U X2.2
2
DIFF
Voltage input, U
X2.3
1
DIFF
Current input, I
X2.4
L3
DIFF
Current input, I
X2.5
L2
DIFF
Current input, I
X2.6
L1
DIFF
X4.2
5
6
7
8
9
10
11
12
13
14
15
16
17
18
X3.1
1
2
9
10
ACFail
TempAlarm
VT1
*)
U
0
CT5
I
0B
CT4
I
0
Sensor
VD3
VD2
Sensor
Sensor
VD1
Sensor
RS3
Sensor
RS2
Sensor
RS1
TCS1
DI1
DI2
DI3
DI4
DI5
DI6
DI7
DI8
DI9
DATA A
RS-485
DATA B
1MRS 751108-MUM
X4.1
+
1
Mains
2
-
5
I R F
4
3
8
7
SO1 6
10
11
SO2
9
12
13
PO1
14
15
PO2
17
18
PO3
X4.2
4
3
2
HSPO1
1
X3.2
SERIAL BUS
X3.3
SERIAL BUS
**)