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3 Mounting and Commissioning
3.1.2
Hardware Modifications
3.1.2.1
General
A subsequent adaptation of hardware to the power system conditions can be neces-
sary for example with regard to the control voltage for binary inputs or termination of
bus-capable interfaces. Follow the procedure described in this section, whenever
hardware modifications are carried out.
Auxiliary Voltage
There are different ranges of input voltage for the auxiliary voltage (refer to the Order-
ing Information in Appendix A.1). The power supplies of the variants for 60/110/125
VDC and 110/125/220/250 VDC, 115 VAC are largely interchangeable by modifying
the position of the jumpers. The assignment of these jumpers to the nominal voltage
ranges and their spatial arrangement on the PCB are described further below at „Pro-
cessor Board C-CPU-2" Location and ratings of the miniature fuse and the buffer
battery are also shown. When the device is delivered, these jumpers are set according
to the name-plate sticker. Generally, they do not need to be altered.
Live 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 terminals via a plug-in jumper (X40).
Assignments of the jumpers to the contact type and the spatial layout of the jumpers
are described in the following Section at margin heading „Processor Board C-CPU-2".
Rated Currents
The input transformers of the device are set to a nominal current of 1 A or 5 A with
jumpers. The jumpers are factory set according to the name-plate sticker. The assign-
ment of the jumpers to the nominal current and the spatial arrangement of the jumpers
are described in the following section under the margin heading „Input/Output Board
C-I/O-11". All jumpers must be set for one nominal current, i.e. one jumper (X61 to
X64) for each input transformer and additionally the common jumper X60.
Note
If nominal current ratings are changed exceptionally, then the new ratings must be reg-
istered in address 206 CT SECONDARY in the power system data (see Section
2.1.2.1).
Control Voltage for
When the device is delivered the binary inputs are set to operate with a voltage that
Binary Inputs
corresponds to the nominal voltage of the power supply. If the nominal values differ
from the power system control voltage, it may be necessary to change the switching
threshold of the binary inputs.
To change the switching threshold of a binary input, a jumper must be reallocated in
each case. The physical arrangement of the binary input jumpers in relation to the
pickup voltages is explained in the sections below under margin headings „Processor
Board C-CPU-2" and „Input/Output Board C-I/O-11".
270
7SD610 Manual
C53000-G1176-C145-4
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