ABB REF 54 Series Technical Reference Manual page 83

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Technical Reference Manual, General
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Terminal diagrams for the REF 541 and REF 543 feeder terminals provided with an
RTD/analogue module are similar to the diagrams presented in sections "Terminal
diagram of REF 541" on page 80 and "Terminal diagram of REF 543" on page 81,
except for the part illustrating the RTD/analogue module (see below), which is
added to the diagrams considering the slot numbers.
X6.1
SHUNT
1
+
2
RTD1_6_AI1
-
3
DIFF
4
-
5
RTD1_6_AI2
6 +
DIFF
SHUNT
7
SHUNT
8
+
9
RTD1_6_AI3
-
10
DIFF
11
-
12
RTD1_6_AI4
13 +
DIFF
SHUNT
14
SHUNT
15
16 +
RTD1_6_AI5
-
17
DIFF
18
X6.2
-
1
RTD1_6_AI6
2
+
DIFF
SHUNT
3
SHUNT
4
5 +
RTD1_6_AI7
6
-
DIFF
7
-
8
RTD1_6_AI8
9
+
DIFF
SHUNT
10
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All external circuits are connected to the terminal blocks on the rear panel. Terminal
block X1.1 for the measuring transformers consists of fixed screw terminals
fastened to the energizing input module. Each terminal is dimensioned for one max.
2
6 mm or two max. 2.5 mm
ABB sensors (Rogowski coil or voltage divider) are connected to the connectors
X2.1...X2.9. A special type of shielded twin BNC connector (e.g. type AMP 332225
or Amphenol 31-224) is used to improve reliability and protection against
disturbances. The current and/or voltage sensor used must have a connector that is
compatible with the feeder terminal. If the feeder terminal is ordered without sensor
inputs, the sensor connectors X2.1...X2.9 are missing. Short-circuit connectors
(1MRS120515) must be connected to unused sensor inputs.
The serial interface RS-232 on the rear panel (connector X3.2) is used for
connecting the REF 54_ to the SPA bus or the IEC_103. The SPA/IEC_103 bus is
connected to the X3.2 via a connection module RER 123 and a cable with a 9-pin D-
type subminiature female connector at both ends. The other end of the cable is
X6.2
11
+
RTD1_6_AO1
- 12
mA
13
+
RTD1_6_AO2
-
14
mA
15
+
RTD1_6_AO3
-
16
mA
+ 17
RTD1_6_AO4
-
18
mA
RTD1diag
2
wires.
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83