Table 33: Optional operation modes for setting group selection
SG operation mode Description
Operator (Default) Setting group can be changed with the setting Settings > Setting
group > Active group.
Value of the SG_LOGIC_SEL output is FALSE.
Logic mode 1 Setting group can be changed with binary inputs
( BI_SG_2...BI_SG_6). The highest TRUE binary input defines the
active setting group.
Value of the SG_LOGIC_SEL output is TRUE.
Logic mode 2
Setting group can be changed with binary inputs where BI_SG_4 is
used for selecting setting groups 1-3 or 4-6.
When binary input BI_SG_4 is FALSE, setting groups 1-3 are selec-
ted with binary inputs BI_SG_2 and BI_SG_3. When binary input
BI_SG_4 is TRUE, setting groups 4-6 are selected with binary inputs
BI_SG_5 and BI_SG_6.
Value of the SG_LOGIC_SEL output is TRUE.
The setting group (SG) is changed whenever switching the
SG operation
mode
setting from "Operator" to either "Logic mode 1" or "Logic mode
2." Thus, it is recommended to select the preferred operation mode at
the time of installation and commissioning and not change it throughout
the protection relay's service. Changing the
SG operation mode
setting
from "Logic mode 1" to "Logic mode 2" or from "Logic mode 2" to "Logic
mode 1" does not affect the setting group (SG).
For example, six setting groups can be controlled with three binary inputs. The
SG
operation mode
is set to “Logic mode 2” and inputs BI_SG_2 and BI_SG_5 are
connected together the same way as inputs BI_SG_3 and BI_SG_6.
Table 34: SG operation mode = “Logic mode 1”
Input
BI_SG_2 BI_SG_3 BI_SG_4 BI_SG_5 BI_SG_6 Active group
FALSE FALSE FALSE FALSE FALSE 1
TRUE FALSE FALSE FALSE FALSE 2
any TRUE FALSE FALSE FALSE 3
any any TRUE FALSE FALSE 4
any any any TRUE FALSE 5
any any any any TRUE 6
Table 35: SG operation mode = “Logic mode 2”
Input
BI_SG_2 BI_SG_3 BI_SG_4 BI_SG_5 BI_SG_6 Active group
FALSE FALSE FALSE any any 1
TRUE FALSE FALSE any any 2
Table continues on the next page
1MRS757644 H Basic functions
620 series
Technical Manual
93
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