Chapter 10 - Service; Compatibility Of Sdcs-Pin-2 Boards; Description Of Sdcs-Pin-20Xb Boards; Hardware Coding - ABB DCS 500B Service Manual

Compatibility of SDCS-PIN-2 boards

Description of SDCS-
PIN-20xB boards

Hardware coding

Snubber circuit

DCS 500 / DCS 600 Service Manual
- 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 divided
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.
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.
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.
Compatibility of SDCS-PIN-2 boards
3ADW000093R0701_DCS500B/DCS600_Service manual_e_g

Chapter 10 - Service

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