Terminal Diagram Of The Rtd/Analog Module; Terminal Connections - ABB REF 54 Series Technical Reference Manual, General

1MRS750527-MUM
5.2.5.
5.2.6.
Feeder Terminal
Technical Reference Manual, General

Terminal diagram of the RTD/analog module

The terminal diagrams for the REF 541 and REF 543 feeder terminals provided with
an RTD/analog module are similar to the diagrams presented in sections "Terminal
diagram of REF 541" on page 94 and "Terminal diagram of REF 543" on page 95,
except for the part illustrating the RTD/analog module (see below), which is added
to the diagrams considering the slot numbers.

Terminal connections

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 coils or voltage dividers) are connected to the connectors
X2.1...X2.9. A special type of shielded twin BNC connector (for example
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 RS-232 serial interface on the rear panel (connector X3.2) is used to connect
REF 54_ to the SPA, IEC_103, Modbus, DNP 3.0, Profibus or IEC 61850 bus.
All buses except the SPA bus require the use of an external interface unit.
The SPA/IEC_103/Modbus/DNP 3.0 bus is connected through the RER 123 Bus
1
Connection Module . The Modbus/DNP 3.0 bus can also be connected through a
RER 133 Bus Connection Module
1
Gateway and IEC 61850 is available through the SPA-ZC 400 Ethernet Adapter
1. This feature is supported in the feeder terminal revisions of Release 3.5 or later.
2. This feature is supported in the feeder terminal revisions of Release 3.0 or later.
2
wires.
2
. Profibus is available through the SPA-ZC 302
REF 54_
A050205
1
.
97