Page 139 - Sace Emax 2 Manual for design engineers

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• Remote Programmable States A and B are also included in the selectivity masks: these 2 parameters,
which are available in the Ekip Link configuration page, enable the event (or combination of several
events) and reference actor that activate the selectivity input of the trip unit to be selected. 2 further states
are available, C and D, but they cannot be configured for Zone Selectivity. All 4 programmable states are
used for the Programmable Logic function described in chapter "9 - Ekip Link".
NOTE: The Programmable Logic function is different from that of Zone Selectivity.

Additional functions: repetition of selectivity information
The Repeat Configuration mask parameter is available in the Ekip Link advanced selectivity page. It
enables the selection of protections whose logic selectivity bit, if present on the input, must be propagated
regardless of the state of the protection on the current trip unit.
NOTE: the parameter only acts on the selectivity bits. It does not involve the hardware outputs.

Additional functions: diagnostics
In the presence of both hardware and logic selectivity, the diagnosis highlights any errors in the hardware
selecitivity cabling by checking its continuity.
In the Ekip Link diagnosis configuration page it is possible to: enable diagnosis, configure the interval
of time between one inspection and the next, select the inputs to be checked for each active actor (S/D_
Forward, G/D_Backward).

Then:
• A check is performed on the hardware inputs at regular intervals.
• If, on the trip unit, the input of an actor is configured for diagnosis (e.g. input S of actor 3) and this input
is not active when the test is performed, the actor stimulates its output (e.g. actor 3 activates output S)
for a short time: the trip unit considers the test result to be positive if it receives the signal correctly at its
input, otherwise it will signal error.
• the diagnosis check will not be performed if the hw input is active.
• if the input configured for diagnosis is active when the test is performed, diagnosis check will not be
performed and the Detection state in the Ekip Link state page will indicate: Unknown.

Error signals (inconsistency)
• Regardless of the diagnosis, if a hardware input is active and none of the logic selectivity bits of the
associated actors is active, a line inconsistency for this input is reported in the Ekip Link state page.
NOTE: to check the line inconsistency, all the actors associated with the trip unit are checked,
including those for which the function has not been enabled (i.e. the value “True” was
not assigned to the Selectivity Actor parameter).

• A line inconsistency (independently of diagnostics) is indicative of a possible configuration error (for example:
a hardware input of the trip unit is connected to the hardware output of a trip unit not associated via Link
Bus, or to an actor for which the function has not been enabled).
• Therefore, to avoid a line inconsistency being reported, the trip units whose hardware outputs are connected
to the hardware inputs of the trip unit must also be connected to the Link Bus and associated to the trip
unit (see the chapter "9 - Ekip Link") while it is not necessary (it is not necessary for the value “True” to be
assigned to the Selectivity Actor parameter).

137 | © 2020 ABB | 1SDH001330R1002 - ECN000134959 - Rev. A Ekip Touch - Additional functions | 1 - Zone Selectivity