Protection - ABB SACE Emax E1.2 Operating Instructions For The Design Engineer

2I Protection
t
I31
2I
66 | © 2017 ABB | 1SDH001330R0002 - ECN000058721 Rev. A
Path
Main page - Menu - Advanced
Function
2I protection, like I protection, protects against instantaneous short circuit.
The main difference between the two protections is that 2I requires an activation event (or command), that
can be programmed by the user.
If 2I protection is active and the set threshold is exceeded, the protection trips within a fixed time. The user
can set the threshold and select three different activation modes.
I
Parameters
The following is a description of the protection parameters:
Parameter Description
Enable To enable/disable the protection and access the programmable parameters.
It defines the current value that activates the protection when exceeded (with
reference to the figure above, the threshold is the part of the curve parallel to the
Threshold I31
y-axis). It is represented both as an absolute value (Ampere) and as a relative value
(In, nominal value defined by the Rating Plug).
Protection enabling allows access to menu 2I Menu (available following the path Advanced - Functions), to
program the protection activation event.
Parameter Description
Two alternative modes are available:
• Dependent function: the protection is active if the programmed activation event
occurs.
Activation • Active: the protection is always active.
Protection activation event:
• On the display, it is possible to choose between the state of the input contacts
of the Ekip Signalling 4K and Ekip Signalling 2K modules, the states of the circuit-
Function breaker, and the Custom function.
• Via Ekip Connect, it is possible to customize the Custom function, that allows up
to eight states to be combined with the activation event configured using AND or OR
logical operators.
Protection activation delay, calculated according to the presence of the activation
event.
Delay
Remote activation
Two remote commands are available for the temporary activation/deactivation of the protection:
• 2I Mode ON: activates the protection.
• 2I Mode OFF: deactivates the protection.
NOTE: if the protection has been activated by the 2I Mode ON command, it will be
deactivated automatically when the solid-state trip unit is turned off.
Signallings
With 2I protection active, the message "2I active" appears in the diagnosis bar and in the Alarm List page,
and the alarm LED remains lit (red).
NOTE: if you select Dependent function the access to the Function and Delay
parameters is activated in order to program the activation event.
NOTE: the protection is active if the event is present for a time greater than the
set delay.
ABB | SACE Emax 2
Ekip Touch protection trip unit | 9 - Touch protections