ABB REF615 Applications Manual page 68

Section 3
REF615 variants
62
for this. To enable the change of an active setting group via a binary input, connect
a free binary input with SMT to the ActSG input of the SGCB-block.
Table 14: Binary input states and corresponding active setting groups
BI State
OFF
ON
The active setting group defined by a parameter is overridden when a binary input is
enabled for changing the active setting group.
EARTH FAULT PROTECTION
EFLPTOC1
I >
51N-1
I0
BLOCK
ENA_MULT
EFHPTOC1
I >>
0
51N-2
I0
BLOCK
ENA_MULT
EFIPTOC1
I >>>
0
50N
I0
BLOCK
ENA_MULT
SENSITIVE EARTH FAULT PROTECTION
EFLPTOC2
51N-1
I0
BLOCK
ENA_MULT
A071350 V4 EN
Figure 26: Non-directional earth-fault protection
Four stages are offered for non-directional earth-fault protection. One stage is
dedicated to sensitive earth-fault protection.
All operate signals are connected to the Master Trip and also to the alarm LEDs. LED
2 is used for directional earth-fault and LED 3 for the sensitive earth-fault protection
operate indication.
Active setting group
1
2
0
START
OPERATE
START
OPERATE
LED2 (EF OPERATE)
OR
START
OPERATE
I >
0
START
LED3 (SEF OPERATE)
OPERATE
1MRS756378 D
REF615
Application Manual