Toshiba S2E21 - Manual (Page 51)

TOSHIBA
Phenomenon
Dn P28
PRE-ALM set-
ting of
does not go
below 100%.
Cursor will
move to of
1 N S T and
Trip output
fails to be
produced.
Alarm output
is not
produced.
Check point
Protection function
is locked.
Output is not
selected at RY O/P
SEL
In O/P RELAY
the logic is
inverted.
External connection
is incorrect or
I
Protection function
i s l o c k e d .
--
- -
is not
selected-at RY O/P
In O/P RELAY
the logic is
inverted.
connection
is incorrect or
I
Possible cause
Normal.
Normal.
Normal.
Normal.
Normal.
Bad connection.
Normal.
Normal.
Normal.
Bad connection.
What to do
PRE-ALM setting of UC
has a range between
100% and 300%.
ALM setting is not
provided for I NST
and UB.
Activate the
protective function.
Select(l) to activate.
Match the logic.
Make proper
connection.
Activate the
protective function.
Select(l) to activate.
Match the logic.
Make proper
connection.