10
Blocking or control
input switchgroups
SGB1, SGB2 and
SGB3
Switch
Function
Factory
setting
SGB1/1 Switches SGB1/1...3 are used when the external control signal BS1 is to
0
SGB1/2 be used for blocking one or more of the current stages of the module.
0
SGB1/3 When all the switches are in position 0 no stage is blocked
0
When SGB1/1=1, the tripping of overload stages I
b
> and I
a
> are blocked
by the input signal BS1.
When SGB 1/2=1, the tripping of phase unbalance stages
∆
I
1
> and
∆
I
2
>
are blocked by the input signal BS1
When SGB1/3=1, the tripping of undercurrent stage I< is blocked by the
input signal BS1.
SGB1/4 External control of reconnection inhibit output using the input signal BS1
0
When SGB1/4=0, the external control is disabled.
When SGB1/4=1, the external control is enabled.
SGB1/5 When SGB1/5=1, the external trip command is carried out to output
0
relay A. External protective relays can be connected to the trip path using
this feature.
Note! The trip signalling is not handled by the SPCJ-module and must
be arranged using a contact on the external protective relay.
SGB1/6 Latching function for the trip signal TS2 of overload stage I
b
>
0
When SGB1/6=0, the trip signal returns to its initial state, i.e. the output
relay drops off, when the measuring signal causing the operation falls
below the starting level.
When SGB1/6=1, the trip signal remains on, i.e. the output relay operates
although the measuring signal falls below the starting level. Then the trip
signal of overload stage I
b
> must be resetted by pressing the RESET
and PROGRAM push-buttons simultaneously. (also by signal BS1. Note
switch SGB1/8). When the display is off the signals can also be resetted
by pressing only PROGRAM.
SGB1/7 Latching function for the trip signal TS2 of unbalance stage
∆
I
2
>
0
When SGB1/7=0, the trip signal returns to its initial state, i.e. the output
relay drops off, when the measuring signal causing the operation falls
below the starting level.
When SGB1/7=1, the trip signal remains on, i.e. the output relay operated
although the measuring signal falls below the starting level. Then the trip
signal of phase unbalance stage
∆
I
2
> must be reset by pressing the RESET
and PROGRAM push-buttons simultaneously. (also by signal BS1. Note
switch SGB1/8). When the display is off the signals can also be reset by
pressing only PROGRAM.
SGB1/8 When SGB1/8=1, an external relay reset is performed by input signal
0
BS1. This makes it possible to have a manual master reset button out-
side the relay. The same button can serve all relays in a station. Another
possibility is to link the reset to some automation.
