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Chapter 8 - Compatibility of SDCS-PIN-2 boards
DCS 500 / DCS 600 Service Manual
VI A
8 - 1
Description of SDCS-
PIN-20xB boards
-
In general the SDCS-PIN-20xB board has the same features as
its predecessors (SDCS-PIN-20xA/20x or SDCS-PIN-2x).
-
It is used for all DCS converters Module sizes C1 (
≥
100A), C2
and C2b regardless of software version and function (armature
or field supply).
-
Converters equipped with the SDCS-PIN-20xB/20xA/20x boards
can be identified by serial number. Every serial number is divi-
ded into two parts by a letter. With the SDCS-PIN-
20xB/20xA/20x the serial number looks like 1234567B1234567.
For the SDCS-PIN-2x an
A
is used.
-
There are two types of SDCS-PIN-20xB boards:
•
SDCS-PIN-205B for converters with a incoming voltage of
400V/500V
•
SDCS-PIN-206B for converters with a incoming voltage of
600V
-
The advantage of the SDCS-PIN-20xB/20xA/20x is the replace-
ment of 6 other boards plus a small RC network. Thus the spare
part handling becomes easier.
Hardware coding
On the SDCS-PIN-20xB resistors are used for hardware coding of
the module, zero current detection and current scaling. In a new
converter the resistors are already cut according to application. If
the SDCS-PIN-20xB board is used as spare part all resistors are
still uncut. The resistors have to be cut according to the table ‘Set-
tings of the SDCS-PIN-20xB board’ as described in the manual
Technical Data.
Snubber circuit
The incoming AC voltage is connected to the SDCS-PIN-20xB
board via integrated fuses. The snubber circuit (RC network) is in-
tegrated as well and connected in parallel to the thyristors. This
configuration leads to lower losses thus to a higher efficiency of the
converter. Before larger converters had external RC networks.
These are no longer needed.
3ADW000093R0601_DCS500B/DCS600_Service Manual_e_f