ABB RELION REX640, Technical Manual, Page: 220 / 1960

3.19.8 Fault direction evaluation T_DIR_REV
3.19.8.1 Function block
Figure 109: Function block
3.19.8.2 Functionality
The fault direction evaluation function T_DIR_REV evaluates enumerated data of the
FAULT_DIR and DIRECTION data attributes of the directional functions.
The output
REV
is extracted from the enumerated input value.
3.19.8.3 Signals
Table 169: T_DIR_REV Input signals
Name Type Default Description
DIR Enum 0 Input signal
Table 170: T_DIR_REV Output signals
Name Type Description
REV BOOLEAN Direction backward
Basic functions 1MRS759142 F
220 REX640
Technical Manual