ABB SPAC 531 C User Manual And Technical Description page 18

18
Part of the starting and tripping signals of the
relay modules are permanently connected to
control the outputs, whereas others are linked
through switchgroup SGR situated at the front
edge of the I/O module SPTR 6B11. The
Switch Function
SGR/1 When SGR/1 = 1, the starting signal of stage I> is linked to
output SIGNAL3
SGR/2 When SGR/2 = 1, the tripping signals of stages I> and I>>
are linked to output SIGNAL1
SGR/3 When SGR/3 = 1, the tripping signal of stage Iϕ> is linked
to output TRIP
SGR/4 No function in SPAC 531/631 C. Has to be in position 0
SGR/5 No function in SPAC 531/631 C. Has to be in position 0
SGR/6 No function in SPAC 531/631 C. Has to be in position 0
SGR/7 When SGR/7 = 1, all the signals connected to output TRIP are linked
to output SIGNAL1
SGR/8 When SGR/8 = 1, all the signals connected to output TRIP are linked
to output SIGNAL2
Note!
Switch SGR/3:
When SGR/3 = 0 and the Iϕ> stage trips, the
trip signal opens output SIGNAL2 and gives an
internal auto-reclose inhibit signal. Thus the
low-set earth-fault stage has a signalling func-
tion only.
Switch SGR/7:
When SGR/7 = 1 the output SIGNAL1 can be
used as a second trip output, for instance, in
applications with two circuit breakers.
Switch SGR/8:
When SGR/8 = 1 the output SIGNAL2 can be
used as a general alarm output for the protection
relay modules, particulary when the output SIG-
NAL1 is used as a second trip output.
switches are set through the opening of the
system front panel.
The following functions can be selected with the
SGR switches:
The operation of the outputs SIGNAL1 and 2
can be delayed 40 ms when they are used to
indicate that the overcurrent module and the
earth-fault module have operated. This delay
eliminates unnecessary signalling if auto-
reclosing is started by the tripping signals of the
relay modules. When an auto-reclose sequence
has started the internal signal ARDUE inhibits
the outputs SIGNAL1 and 2.
Default
value
1
1
1
0
0
0
0
0