3
Description of
functions
Control functions
The control module type SPTO 1D6 is used
for reading binary input signals and for local
and remote status indication of the binary sig-
nals. The control module also executes open and
close commands for controllable switching de-
vices of the switchgear.
The input channels 1...3 are used for reading
status information of the switching devices, i.e.
circuit breakers and disconnectors here after
called objects. Each of these channels includes
two physical inputs, one for the "object open"
and one for the "object closed" information. The
control module indicates the status information
locally on the front panel by means of LED
indicators and transfers the status information
to the substation level communication equip-
ment using the SPA serial bus.
The control module reads the status informa-
tion of max. 3 objects. The front panel of the
control module is provided with a LED matrix
used for object status indication. The object sta-
tus indication LEDs of the control module are
freely configurable by the user to match the com-
binations of switching devices of the switchgear
cubicles.
Input channels 4...13 consist of single binary
input circuits. These channels are basically used
for transferring binary signals, other than cir-
cuit breaker and disconnector status informa-
tion signals, over the SPA bus to the substation
level system. The status of input channels 4...9
is indicated locally by LEDs on the front panel
of the control module.
The control module is capable of providing open
and close commands for one switching object.
The commands may be given via the local push-
buttons on the front panel, the SPA serial bus
or the input channels 4...13. The length of the
pulse-shaped open or close signals can be deter-
mined by the user.
An enable signal must be given by the inter-
locking program before an open or close pulse
can be delivered. The enable signal is control-
led by the status of input channels 1...3 and
4...13 and the interlocking program written by
the user.
The signal outputs, signal 1...4, can be used for
indicating the status of the input channels 4...13.
The selected output is active as long as the in-
put channel is in an active state.
The open, close or signal 1...4 outputs can be
controlled by the Direct Output Control pro-
gram. This program resembles the interlocking
program. The user can define under which cir-
cumstances an output is to be activated. This
control of an output is determined by the sta-
tus of input channels 1...3 and 4...13, the posi-
tion of the local/remote key switch and the Di-
rect Output Control program written by the
user.
Measurement
functions
The control module SPTO 1D6 measures three
phase currents and two mA signals. The mA
inputs are used for measuring active and reac-
tive power. External measuring transducers are
needed. The input channel 7 can be used as a
pulse counter for energy pulses. Energy can also
be calculated by integrating the measured power
values over time.
The measured signal values can be scaled for
display locally and for remote transfer over the
SPA bus as primary values.
