Disassembly
Disassembly of the Device
NOTE
It is assumed for the following steps that the device is not operative.
Work on the Printed Circuit Boards
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.
²
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
following 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.
•
If the device also features interfaces at the locations „B“ and „D“ in addition to the interfaces located at
„A“ and „C“, the screws located diagonally to the interfaces must be removed. This step is not necessary if
the device is designed for surface mounting.
•
Remove the covers on the front panel and loosen the screws which can then be accessed.
•
Remove the front cover and place it carefully to the side.
Work on the Plug Connectors
CAUTION
Mind electrostatic discharges:
Non-observance can result in minor personal injury or property damage.
²
In order to avoid electrostatic discharges when handling plug connectors, first touch an earthed metal
surface.
²
Do not plug or unplug interface connectors under voltage!
The arrangement of the boards for the different housing sizes can be seen in the following figures.
When performing work on plug connectors, proceed as follows:
3.1.2.2
Mounting and Commissioning
3.1 Mounting and Connections
316 SIPROTEC 4, 7UT6x, Manual
C53000-G1176-C230-5, Edition 09.2016
To Next Page
Loading...
Need help?
General
