Inputs Details Tab - ABB RELION REB500 Operation Manual

Section 4
HMI500
4.6.3.4

Inputs Details tab

IEC18000551 V1 EN-US
Figure 28: Configuration/ Binary module/ Inputs/ Details
Signal allocation
The Details dialog box provides facility for allocating optocoupler inputs to the logical input
signals and the event memory of every input/output.
The abbreviations C.x and O.x denote the CLOSE and OPEN auxiliary contacts on the isolator or
circuit-breaker respectively as they appear in the Details dialog box. Where an isolator or a
circuit-breaker is only equipped with a single auxiliary contact, the One auxiliary contact mode
must be selected.
This mode is not recommended because the status of the isolator or circuit-breaker cannot be
properly monitored with just one auxiliary contact.
The signals are configured at the time the protection system is engineered and are generally
not changed subsequently.
Only the CLOSED signal field is visible when the One auxiliary contact mode is selected. The
function of the OPEN signal is achieved by inverting the CLOSED signal. In this case, we
recommend connecting the auxiliary contact supply to the corresponding input so that its
integrity is supervised.
Inversion
The signals of optocoupler inputs can also be inverted.
Configuring events
Every signal can also be saved as an event in one or more event memories (see
Manual ).
More check boxes and input fields appear when the Recording radio button is selected. They
determine whether the event is recorded on the positive or negative-going edge or on both
edges. The user can enter a text (up to 32 characters) defining the event, but if none is entered
the system assigns a default event text. At least one event memory in the Send event to (=
save event in) field must also be selected either in the CU and/or BU event memories.
Furthermore, events can be assigned to the event lists of IEC 60870-5-103 interbay bus (IBB) 1
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Technical
Distributed busbar protection REB500
Operation manual