ABB REB500 - Section 2 Signals; Signal Designations

Section 2 1MRK 505 350-UEN
Signals
6 Technical Manual
Distributed busbar protection REB500
Section 2 Signals
Section 2.1 gives an overview on the numbering and naming conventions for
signals.
In the following sections list binary input and output signals on bay units and
central units. All signals are listed in ascending order of their numbers in their
respective filter groups.
2.1 Signal designations
The REB500 configuration assigns the signals to predefined inputs and outputs.
Signals are designated according to the following convention:
Table 1 Abbreviations used for the different signal texts
Category Abbreviation
Bay unit
BU_
Central unit
CU_
General signals
SYS_
Busbar protection signals
BBP_
Breaker failure signal
BFP_
End fault protection signal
EFP_
Time
-
overcurrent protection
signal
OCDT_
Disturbance recorder signal
DR_
Circuit
-
breaker pole discrepancy protection signal
PDF_
Low
-
voltage check feature
UV_
Input
I
Output
O
Internal system signal
SYS_INT