Chapter 6. Description of Operation of Protection Subsystem
M7IRDA2003I
7IRD-A/J/M: Distribution Protection & Control Terminal
© ZIV APLICACIONES Y TECNOLOGÍA, S.L.U. 2020
6-26
6.10
Change Settings Group
Protection
,
Logic
and
Recloser
Settings are stored in three groups (Group 1, Group 2 and
Group 3) which can be activated or deactivated from the keypad or communications port, or by
using external Status Contact Inputs.
The Setting Group Control function allows the user to modify the active Setting Group by means
of Status Contact Inputs. This feature enables quick modification of the protection settings when
circumstances require a change. Use of this function requires that the protection setting groups
be pre-programmed.
Change of setting group using the
HMI
will be explained in Chapter 8, Keypad and
Alphanumeric Display. Using local communications this change is carried out with the setting
Activate Group
(
Settings
menu).
Change of setting group using the communications port or digital input need of a specific
enabling by an option in the
Configuration
menu (
Operations
–
Remote Setting
submenu) of
HMI
. Both options are simultaneously incompatible.
The value of
E_DIG
should be set to “
1
” (
YES
) to enable group setting changes to be made
from the status contact inputs. If
E_DIG
is set to “
0
”, the terminal unit will remain in the last
setting group selected, independent of the activity of the Status Contact Inputs. When Setting
Group Control by status contact is enabled, no setting changes can be made from the keypad of
the local RS232 communications port. If the
Change Settings
option on the Main Menu is
selected from the keypad, the display indicates
Access Denied
.
To use this function, three status contact inputs must be programmed to activate the three
setting group.
Control setting group by status contact inputs (
E_DIG
set to “
1
”) and by remote communications
port (
P_REM
set to “
1
”) cannot be enabled simultaneously.