Installation and Commissioning
8-15
7SA6 Manual
C53000-G1176-C156-2
8.1.3
Hardware Modifications
8.1.3.1
General
Hardware modifications might be necessary or desired. For example, a change of the
pick-up threshold for some of the binary inputs might be advantageous in certain ap-
plications. Terminating resistors might be required for the communication bus. In ei-
ther case, hardware modifications are needed. The modifications are done with jump-
ers on the printed circuit boards inside the 7SA6. Follow the procedure described in
Subsubsection 8.1.3.2 to 8.1.3.5, whenever hardware modifications are done.
Power Supply
Voltage
There are different ranges for the power supply voltage of the various power supplies.
Refer to the data for the 7SA6 ordering numbers in Section A.1 of the Appendix. The
power supplies with the ratings DC 60/110/125 V and DC 110/125/220 V-, AC115 are
interconvertible. Jumper settings determine the rating. The assignment of these jump-
ers to the supply voltages is described in Subsubsection 8.1.3.3, see “Processor
Board C-CPU-2”. When the relay is delivered, these jumpers are set according to the
name-plate sticker. Generally, they need not be altered.
Life Contact
The life contact of the device is a changeover contact from which either the NC contact
or the NO contact can be connected to the device connections F3 and F4 (or corre-
sponding terminals on housings for panel surface mounting) via a plug-in jumper
(X40). The assignment of the plug-in jumper to the type of contact and the location of
the jumper is described in Subsubsection 8.1.3.3, see “Processor Board C-CPU-2”.
Nominal Currents
The input transformers of the device are set to a nominal current of 1 A or 5 A with
jumpers. The position of the jumpers are set according to the name-plate sticker. The
assignment of the jumpers to the nominal rate and the arrangement of the jumpers is
described in 8.1.3.3, see “Input/Output Board C–I/O–2” or “Input/Output Board C–I/O–
11”. All jumpers must be set for the same nominal current, i.e. a jumper (X61 to X64)
one jumper for each input transformer and additionally one jumperX 60.
Control Voltages
for Binary Inputs
When the device is delivered from the factory, the binary inputs are set to operate with
a voltage that corresponds to the rated DC voltage of the power supply. In general, to
optimize the operation of the inputs, the pick-up voltage of the inputs should be set to
most closely match the actual control voltage being used. Each binary input has a
pick-up voltage that can be independently adjusted; therefore, each input can be set
according to the function performed.
A jumper position is changed to adjust the pick-up voltage of a binary input. The phys-
ical arrangement of the binary input jumpers in relation to the pick-up voltages is de-
scribed in 8.1.3.3.
Note:
If nominal current ratings are changed exceptionally, then the new ratings must be
registered in address
206
CT SECONDARY
in the
Power System Data 1 (P.Sys-
tem Data 1)
(see Subsection 6.1.1).
Содержание siprotec 7SA6
Страница 2: ...Siemens Aktiengesellschaft Book No C53000 G1176 C156 2 ...
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Страница 32: ...Introduction 1 14 7SA6 Manual C53000 G1176 C156 2 ...
Страница 82: ...Hardware and Connections 2 50 7SA6 Manual C53000 G1176 C156 2 ...
Страница 119: ...SIPROTEC 4 Devices 4 25 7SA6 Manual C53000 G1176 C156 2 Figure 4 20 CFC Logic example ...
Страница 190: ...Configuration 5 62 7SA6 Manual C53000 G1176 C156 2 ...
Страница 559: ...Control During Operation 7 45 7SA6 Manual C53000 G1176 C156 2 Figure 7 45 Circuit breaker trip test in DIGSI 4 ...
Страница 652: ...Installation and Commissioning 8 78 7SA6 Manual C53000 G1176 C156 2 ...
Страница 724: ...Technical Data 10 56 7SA6 Manual C53000 G1176 C156 ...
Страница 800: ...Appendix A 76 7SA6 Manual C53000 G1176 C156 2 ...
Страница 866: ...Appendix B 66 7SA6 Manual C53000 G1176 C156 2 ...