ABB SPAC 531 C User Manual And Technical Description page 10

Control functions
General
Input channels 1...7
Input channels 8...14
and 15..17
Interlocking
Direct output control
10
The control module SPTO 6D3 is used to read
the status information of circuit-breakers and
disconnectors.The module indicates the status
locally by means of LED indicators and transfers
the information to station level equipment via
the SPA bus. The status of seven objects can be
indicated.
The control module is also used to control up to
The control module uses input channels 1...7
to read status information from circuit breakers
and disconnectors. Each of these channels con-
sists of two binary inputs, one for reading open
status and the other for reading closed status of
an object. This means that the status informa-
tion must be wired to the feeder terminal as
four-pole information.
The front panel of SPTO 6D3 has a 4x4 matrix
Further, the control module can be used to read
seven external and three internal binary signals.
The external signals, channels 8...14, can be
single contact data wired from the bay and the
internal signals, channels 15...17, are starting
and tripping signals of the protection relay
modules. Compare the diagram "Intermodular
control signal exchange" in this manual.
The input signal type for channels 8...17 can be
selected to be active at high state, i.e. when a
control voltage is applied to the input, or at low
state, i.e. when no control signal is applied to the
input. The indications of the activations of the
external input channels 8...13 can individually
be programmed to be memory controlled, which
means that the LED corresponding to an input
channel, which has been activated for more than
10 ms, remains lit until separately reset. Red
light of a LED indicates that the concerned
input channel is activated.
The control module includes a feeder oriented
interlocking logic which can be freely pro-
grammed by the user. When writing an inter-
locking program the user defines when it is
allowed to give an open or close signal to a
specific object. When an open or close com-
mand is given, the interlocking system checks
whether the operation is permitted. After that
Normally the outputs OPEN1...6 and CLOSE
1...6 are controlled by open or close com-
mands, either given locally with push-buttons
or over the serial bus. When Direct Output
Control has been selected all outputs, i.e.
six objects, e.g. circuit breakers or disconnec-
tors, either locally or through opening or closing
commands received over the SPA bus.
In addition to status information the control
module can read other binary data, indicate it
locally and transfer the information to station
level equipment. A maximum of seven external
binary signals can be wired to the feeder terminals.
of status indication LEDs. At a time seven of
these LEDs can be used for status indication.
The circuit breaker/disconnector configuration
indicated by these LEDs is freely selectable by
the user.
At the most six of the objects whose status is read
via input channels 1...7 can be controlled. The
outputs OPEN1...6 and CLOSE1...6 operate
as the control outputs of the feeder terminal.
The active status of the separate input channels
8...13 can be programmed to remain memo-
rized. Then the LED of the concerned input
channel does not go out until the channels is
reset by pressing push-buttons STEP and SE-
LECT simultaneously or by giving parameter
S5 the value of 0 or 1 via the remote control
system.
The input channels 8...17 can be used to con-
trol the OPEN1...6, CLOSE1...6 and SIG-
NAL 5 or 6 outputs. When an input channel is
activated the OPEN or CLOSE output
configured to the channel delivers a control
pulse. The SIGNAL outputs are active as long as
the input channels are active.
Input channel 17 of the control module SPTO
6D3 is not used in feeder terminals SPAC 531
C and SPAC 631 C.
the command is executed or cancelled.
The interlocking can be selected to be depend-
ing on the status of the four-pole input channels
1...7 or the input channels 8...17. The tripping
signals of the relay modules are not affected by
the interlocking system.
OPEN1...6, CLOSE1...6 and SIGNAL5 or 6,
can be controlled without an open or close
command. The outputs are controlled by a
programmed logic and the status of input chan-
nels 1...7 and 8...17.