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Control functions
General
Inputs CHANNEL
1...3
Inputs CHANNEL
4...9 and
CHANNEL 10...13
Interlocking
Conditional direct
output control
The control module SPTO 1D6 is used for
reading status information from circuit break-
ers, CB trucks and disconnectors.The module
indicates the status locally by means of LED
indicators and transfers the information to the
substation level via the optical-fibre SPA bus.
The status of maximum three objects can be
indicated.
The control module is also used for controlling
one object e.g. a circuit breaker, locally by means
The control module uses input channels 1...3
to read status information from circuit breakers,
CB trucks and disconnectors. Each input
CHANNEL 1...3 is formed by two binary
inputs, one input is used for reading the open
status and the other for reading the close status
of an object. This means that the status informa-
tion must be wired to the feeder terminal as
four-pole message.
The control module can be used for reading six
external and four internal binary signals. The
external signals, CHANNEL 4...9, can be sin-
gle contact data wired from the switchgear cubi-
cle and the internal signals, CHANNEL 10...13,
are start and trip signals of the protection relay
module.
The inputs CHANNEL 4...13 can be confi-
gured to be active at high state, i.e. input ener-
gized, or active at low state, i.e. input not
energized.
The control module includes a cubicle-oriented
interlocking which is freely programmable by
the user. By writing an interlocking program the
user defines under which circumstances the
controlled object can be closed or opened. When
an opening or closing command is given the
interlocking program is checked and after that
the command is executed or canceled.
Normally the OPEN and CLOSE outputs are
controlled by an open or close command given
by the operator. In the conditional direct output
control outputs OPEN, CLOSE and SIGNAL
1...4, can be controlled without an open or
of push-buttons on the front panel or with the
opening or closing commands received over the
SPA bus. Normally the double-pole control
principle is used for controlling the circuit
breaker.
In addition to status information the control
module can read other binary data, indicate the
information locally and transfer it to the substa-
tion level equipment. Six external binary signals
can be wired to the feeder terminal.
The front panel of the control module holds a
4x4 LED matrix, which is used for status indi-
cation of the circuit-breakers, CB trucks and
disconnectors of the feeder cubicle. At a time,
three of these LEDs can be used for status
indication. The circuit breaker/CB truck/
disconnector configuration indicated by the
LEDs is freely configurable by the user.
One of the objects, the status of which is read via
inputs CHANNEL 1...3 can be controlled with
the OPEN and CLOSE outputs.
The front panel has a local LED indication for
the external inputs CHANNEL 4...9. The red
LED is normally lit when the input is active.
The inputs CHANNEL 4...13 can be used to
control the outputs OPEN, CLOSE and SIG-
NAL 1...4. On activation of an input the
configured OPEN or CLOSE output provides
an output pulse, whereas the outputs SIG-
NAL1...4 are continuously activated as long as
the concerned inputs are activated.
The interlocking can be so programmed that it
considers the status of the four-pole inputs
CHANNEL 1...3 and the inputs CHANNEL
4...13. The trip signals of the protection relay
module are not influenced by the interlocking.
To simplify commissioning the feeder terminal
is provided with default interlocking schemes. A
certain default interlocking scheme is always
related to a certain circuit breaker/disconnector
configuration.
close command given by the operator. In this
case the outputs are controlled by the direct
output control program, which checks the sta-
tus of the inputs CHANNEL 1...3, CHAN-
NEL 4...13 and the R/L-key switch.
9
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