Page 21 - Sace Emax 2 Manual for design engineers

Continued from the previous page ABB | SACE Emax 2
NOTE: with the trip unit off, the operation of the LEDs is guaranteed if the internal battery of
the trip unit is working properly.

About
The LEDs combined with the protections provide various information, through different combinations of
lighting and blinking.
NOTE: all the combinations related to protection LED signals are described in chapter Self-
diagnosis and signalling , on page 29.
The power-on LED provides information about the power status of the protection trip unit:
• LED on (default configuration) fixed or blinking, signals trip unit energized.
• LED off signals trip unit de-energized.
NOTE: with Ekip T&P module and Ekip Connect software, it is possible to configure how the
power LED functions (LED fixed or blinking).

Protections: thresholds The thresholds of all the protections can be modified with various dip-switches, as specified on the serigraph
of the interface.
The values of the protections make reference to the current In, a nominal value defined by the Rating Plug.
IMPORTANT:
• Modification of the thresholds must be performed in the absence of protection
alarms.
• Modifications carried out in alarm conditions are accepted by the trip unit when resting
condition is restored (absence of protection alarms).

Protections: times The times and the curves of the protections can be modified with various dip-switches, as specified on the
serigraph of the interface.
IMPORTANT:
• Modification of the times must be performed in the absence of protection alarms.
• Modifications carried out in alarm conditions are accepted by the trip unit when resting
condition is restored (absence of protection alarms).

Settings Two further settings are available:
• Neutral allows activation and adjustment of the protections on the neutral pole.
• Frequency allows the selection of the installation frequency.

iTest pushbutton The iTest pushbutton is useful for three operations:
• Perform tests (circuit-breaker opening test and LED test). Consult chapter 3 - Test on page 28.
• Reset the signal of the tripped protection. This operation can be performed when the circuit-breaker is
both open and closed and with currents present, by pressing the push-button for about 1 second (the
signal disappears when the push-button is released).
• With the trip unit off, check the information relating to the switch-off or tripping event.
NOTE: with the trip unit off, pressing of the iTest button switches on (for approximately 4
seconds):

• the power-on LED, if the trip unit is off due to an energy drop (primary current less than the
minimum level of operation, removal of auxiliary power supply with circuit-breaker open, etc…).
• the protection tripped LED if the trip unit is off due to a protection trip.

Test connector The test connector allows the connection of Ekip TT and Ekip T&P modules, in order to perform the following
operations:
• Temporary energizing of the trip unit to check the status, and perform the trip test (option possible with
all the front interface modules).
• Analysis, supervision and setting of additional parameters through external communication test units
(Ekip T&P).

19 | © 2020 ABB | 1SDH001330R1002 - ECN000134959 - Rev. A Ekip Dip | 1 - Operator interface