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1MRS755225
Transformer Terminal
Technical Reference Manual, General
RET 54_
99
5.2.5.
Terminal diagram of the RTD/analog module
Terminal diagrams for the RET 541 and RET 543 transformer terminals provided
with an RTD/analog module are similar to the diagrams presented in sections
“Terminal diagram of RET 541” on page 95 and “Terminal diagram of RET 543”
on page 96, except for the part illustrating the RTD/analog module (see below),
which is added to the diagrams considering the slot numbers.
A050205
5.2.6.
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.
6 mm
2
or two max. 2.5 mm
2
wires.
The RS-232 serial interface on the rear panel (connector X3.2) is used to connect
RET 54_ to the SPA, IEC_103, Modbus, DNP 3.0, Profibus or IEC 61850 bus. The
SPA/IEC_103 bus is connected through the RER 123 fibre-optic bus connection
module . The Modbus/DNP 3.0 bus can be connected through a RER 133 bus
connection module. Profibus is available through the SPA-ZC 302 Gateway and IEC
61850 is available through the SPA-ZC 400 ethernet adapter. For further
information, about the external interface units, refer to the technical description of
the concerned module. (
see “Related documents” on page 8
).