Mounting and Commissioning
3.1 Mounting and Connections
SIPROTEC, 7SD610, Manual
C53000-G1176-C145-6, Release date 02.2011
275
Replacing Interfaces
The serial interfaces can be exchanged in the versions for panel flush mounting and cubicle mounting. The fol-
lowing section under margin heading „Rreplacing Interface Modules“ describes which interfaces can be ex-
changed, and how this is done.
Terminating interfaces with bus capability
If the device is equipped with a serial RS485 port, the RS485 bus must be terminated with resistors at the last
device on the bus to ensure reliable data transmission. For this purpose, termination resistors are provided on
the PCB of the C-CPU-2 processor module and on the interface module which can be connected via jumpers.
The spatial arrangement of the jumpers on the PCB of the processor module C-CPU-2 is described in the fol-
lowing sections under the margin heading „Processor Module C-CPU-2“ and on the interface modules under
„RS485 Interface“ and „PROFIBUS/DNP/MODBUS Interface“. Both jumpers must always be plugged in the
same way.
The termination resistors are disabled on delivery.
Spare Parts
Spare parts can include the backup battery that maintains the data in the battery-buffered RAM when the
voltage supply fails, and the miniature fuse of the internal power supply. Their spatial arrangement is shown in
the figure of the processor module. The ratings of the fuse are printed on the board next to the fuse. When
replacing the fuse, please observe the guidelines given in the SIPROTEC 4 System Description in the chapter
„Maintenance“ and „Corrective Maintenance“.
3.1.2.2 Disassembly
Work on the Printed Circuit Boards
Note
It is assumed for the following steps that the device is not operative.
Caution!
Caution when changing jumper settings that affect nominal values of the device:
As a consequence, the ordering number (MLFB) and the ratings on the name plate no longer match the actual
device properties.
Where such changes are necessary in exceptional cases, they MUST be marked clearly and visibly on the
device. Self-adhesive stickers are available that can be used as supplementary name plate.
To perform work on the printed circuit boards, such as checking or moving switching elements or exchanging
modules, proceed as follows:
• Prepare your workplace: provide a suitable pad for electrostatically sensitive devices (ESD). Also the follow-
ing tools are required:
– screwdriver with a 5 to 6 mm wide tip,
– a crosstip screwdriver for Pz size 1,
– a 5 mm socket wrench.
• Unfasten the screw-posts of the D-subminiature connectors on the back panel at location „A“ and „C“. This
step is not necessary if the device is designed for surface mounting.
To Next Page
Loading...
Need help?
General