104
1MRS750527-MUM
Feeder Terminal
Technical Reference Manual, General
REF 54_
The display language combination (see the table below) is identified by a three-digit
suffix in the software number labeled on the front panel of the feeder terminal, for
example Software No: 1MRS110028-0__.
The REF 541, REF 543 and REF 545 feeder terminals differ
from each other as to
the number of digital inputs and outputs as follows.
7.2. Hardware versions of REF 541, REF 543 and REF 545
For the number of digital inputs and outputs of REF 54_ feeder terminals, refer to
section “Order number” above. The number of matching transformers, sensor inputs
and analog inputs and outputs, and the auxi
liary voltage range vary between the
different hardware versions of REF 54_. Moreover, REF 541 and REF 543 can be
supplied with an RTD/analog module. For more detailed information about the
hardware of REF 54_, refer to Section “Hardware versions” on page 13.
7.3. Software configuration
Each REF 54_ feeder terminal allows different software configurations based on
separate functions (refer to Section “Functions of
the feeder terminal” on page 21).
Functions included in the selected functionality
level (refer to Section “Ordering
Information” on page 103) can be activated within the sc
ope of the I/O connections
and considering the total CPU load of
the functions.
Suffix Language combination
001 English - German
002 English - Swedish
003 English - Finnish
007 English - Portuguese
008 English - Polish
009 English - Russian
010 English - Spanish
012 English - Czech
Number of inputs/outputs REF 541 REF 543 REF 545
Digital inputs 15 25 34
Trip circuit supervision inputs 2 2 2
Power outputs (NO single-pole) 0 2 3
Power outputs (NO double-pole) 5 9 11
Signal outputs (NO) 2 2 4
Signal outputs (NO/NC) 5 5 8
Self-supervision outputs 1 1 1