Page 93 - Sace Emax 2 Manual for design engineers

ABB | SACE Emax 2
Repetition 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 status of the protection on the current unit.
NOTE: the parameter only acts on the selectivity bits. It does not involve the outputs

Diagnostic In the presence of both hardware and logic Selectivity, the diagnosis highlights any errors in the hardware
Selectivity cabling by checking its continuity.
The Ekip Link diagnosis configuration page allows you 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:
• the hardware inputs are checked at regular intervals
• if, in Ekip Touch, 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: Ekip Touch 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
parameter in the Ekip Link state page will indicate: Unknown

Errors and inconsistencies 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: line inconsistency is ascertained by checking all the actors associated with the unit,
even those for which the function has not been enabled (the Selectivity Actor parameter
has not been assigned value: True)
A line inconsistency (regardless of the diagnosis) is indicative of a possible configuration error (example: a
hardware input of the release is connected to the hardware output of a device not associated via Link Bus,
or of an actor for which the function has not been enabled).
• to prevent a line inconsistency from being signaled, devices whose hardware outputs are connected to the
hardware inputs of Ekip Touch must also be connected to the Link Bus and associated with Ekip Touch,
while the function need not be enabled for them (the Selectivity Actor parameter need not be assigned
value: True)

91 | © 2020 ABB | 1SDH001330R1002 - ECN000134959 - Rev. A Ekip Touch - Protections | 10 - Logic selectivity