I<->O Ind1 And I<->O Ind2; I<->O Pos; Measurement - ABB REX 521 Technical Reference Manual, Standard Configurations

1MRS 751802-MUM
7.2.2.
7.2.3.
7.3.
7.3.1.
Protection Relay
Technical Reference Manual, Standard Configurations
1↔0 CB1
OPEN
OOPEN
CLOSE
OCLOSE
CLOSEENA
AOPEN
BINOPEN
ACLOSE
BINCLOSE
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I<->O IND1 and I<->O IND2
The object indication function blocks I !O IND1 and I !O IND2 indicate the
open, close and undefined states of a disconnector or an earthing switch.
I<->O POS
The function block for logic control position selector, I !O POS, makes it possible
to choose remote or local position via the input Remote, which facilitates the flexible
selection of control position. The Remote input can be found in Main
menu\Configuration\Input Signals\Remote.
In remote position, the circuit breaker can only be controlled via remote
communication and, accordingly, the local position only enables operation via the
HMI and the digital inputs.
I<->O POS
BINREMOTE
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Measurement

3I
The measurement function block 3I measures the true RMS phase currents, i.e.
harmonics are not suppressed. The current values are updated once a fundamental
frequency cycle, i.e. the integration time for the true RMS calculation is one
fundamental cycle.
3I
IL1
IL2
IL3
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REX 521
91