Siemens SIPROTEC 4 7SJ61 User Manual

provided on the PCB of the CPU processor module and on the RS485 or PROFIBUS interface module which can
be connected via jumpers. Here, only one option can be used. The physical arrangement of the jumpers on the
PCB of the corresponding processor board CPU is described in the following sections under margin heading
„Processor Board CPU“. The arrangement of the jumpers on the interface modules is described under margin
heading “RS485/RS232” and “Profibus Interface (FMS/DP) DNP3.0/Modbus”. Both jumpers must always be
plugged identically.
The terminating resistors are disabled on delivery.
Spare Parts
Spare parts can be the buffer battery that provides for storage of the data in the battery-buffered RAM when
the supply voltage fails, and the miniature fuse of the internal power supply. Their physical arrangement is
shown in the figures of the processor boards. The ratings of the fuse are printed on the board next to the fuse.
When exchanging the fuse, please observe the hints given in the SIPROTEC 4 System Description under “Main-
tenance” and “Corrective Action / Repairs”.
Disassembly
Work on the Printed Circuit Boards
i
i
NOTE
Before carrying out the following steps, make sure 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 that are stated on the nameplate do
no longer match the actual device properties.
²
If such changes are necessary, the changes should be clearly and fully noted on the device. Self adhe-
sive stickers are available that can be used as replacement nameplates.
To perform work on the printed circuit boards, such as checking or moving switching elements or exchanging
modules, proceed as follows:
•
Prepare working area: Provide a grounded mat for protecting components subject to damage from elec-
trostatic discharges (ESD). The following equipment is required:
– screwdriver with a 5 to 6 mm wide tip,
– 1 Phillips screwdriver
– 5 mm socket or nut driver.
•
Unfasten the screw-posts of the D-subminiature connector on the back panel at location "A". This activity
is not necessary if the device is designed for surface mounting.
•
If, besides the interface at location "A", there are further interfaces at location "B" and/or "C", also remove
the screws located diagonally to the interfaces. This is not necessary if the device is designed for surface
mounting.
•
Remove the four or six caps on the front cover and loosen the screws that become accessible.
•
Carefully take off the front cover.
3.1.2.2
Mounting and Commissioning
3.1 Mounting and Connections
SIPROTEC 4, 7SJ61, Manual 237
C53000-G1140-C210-6, Edition 05.2016

Siemens SIPROTEC 4 7SJ61 Specifications

General

Brand	Siemens
Model	SIPROTEC 4 7SJ61
Category	Relays
Language	English