REG 316*4 1MRB520049-Uen / Rev. F ABB Switzerland Ltd
3-301
3.6.2. Logic (Logic)
A. Application
Logical combination of binary input signals or of output signals
from the protection functions, e.g. for
· specific signals required by the application
· supplementary protection functions.
B. Features
· binary I/P channels assignable to
· binary I/P signals
· protection function O/P signals
· All I/P channels can be inverted
· Following logic functions available for selection:
· OR gate with 4 I/P’s
· AND gate with 4 I/P’s
· R/S flip-flop with 2 I/P’s for setting and 2 I/P’s for resetting:
· The O/P is “0”, if at least one of the reset I/P’s is “1”.
· The O/P is “1”, if at least one of the set I/P’s is “1” AND
none of the reset I/P’s is “1”.
· The O/P status is sustained when all the I/P’s are at “0”.
· Every logic has an additional blocking I/P, which when acti-
vated switches the O/P to “0”.
C. Inputs and outputs
I. C.t./v.t. inputs:
· none
II. Binary inputs:
· 4 logic inputs
· blocking
III. Binary O/P’s:
·
tripping
IV. Measurements:
· none.
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