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PRODUCT DESCRIPTION
GEK-106273L
MIF Digital Feeder Protection
4-11
4.3.5. LOGIC
CONFIGURATION
M family relays can execute simple logic schemes that can be programmed from ENERVISTA MII SETUP. This logic
schemes can be found at
Setpoint – Logic Configuration
.
When one of the logics is selected, a new window will appear where the user can assign up to 8 inputs to the logic
circuit. Each of these inputs can be a single function or status, as well as a logical union of several statuses.
FIGURE 4-13. LOGIC CONFIGURATION
The way the logic works is illustrated in the diagram at the right of the logic window.
First, depending on the gate, up to 2 or 3 signals (internal flags coming from the status of the relay or from another
logic, or external input signals) can be chosen as sources of each
AND gate
. The way they are programmed is
similar to the way I/Os are (refer to relay configuration). The device will not take into account entries that are after an
empty one. This means that every entry after the first empty one will be ignored. For example, if
L1 IN1
is
programmed but
L1 IN2
is left empty, the relay will not take into account
L1 IN3
and will directly evaluate
L1 IN4
. In
the same way, the relay will ignore
AND2
if
AND1
is not programmed, and will ignore
AND3
if
AND1
or
AND2
are not
programmed.
Then the results from the AND gates are added by an
OR gate
that will produce the result of the logic.
It is possible to set the
pickup and dropout times for output from the OR gate.
Example: for picking time of 10s
and a dropout time of 15s, if input of the OR gate changes to 1, this input has to remain for 10s before the result of
the logic changes to 1. If result of the OR gate drops to 0, output will be 1 for 15s and after that time output will be 0.
See Chapter 7 for more details on the logic configuration.
Содержание GEK-106273L
Страница 19: ...GETTING STARTED 1 12 MIF Digital Feeder Protection GEK 106273L ...
Страница 95: ...SETTINGS 5 38 MIF Digital Feeder Protection GEK 106273L ...
Страница 101: ...I O CONFIGURATION 6 44 MIF Digital Feeder Protection GEK 106273L ...
Страница 127: ...KEYPAD AND DISPLAY 8 26 MIF Digital Feeder Protection GEK 106273L ...
Страница 147: ...INSTALLATION AND MAINTENANCE 10 2 MIF Digital Feeder Protection GEK 106273L ...
Страница 154: ...ANNEX 1 THERMAL IMAGE UNIT GEK 106273L MIF Digital Feeder Protection 11 7 Figure A 1 1 THERMAL CURVE FOR τ1 3 MINUTES ...
Страница 155: ...ANNEX 1 THERMAL IMAGE UNIT 11 8 MIF Digital Feeder Protection GEK 106273L Figure A 1 2 THERMAL CURVES FOR τ1 3 MIN ...
Страница 199: ...ANNEX 5 HARMONIC FILTERING 15 4 MIF Digital Feeder Protection GEK 106273L ...