Siemens SIMOREG DC Master Modules – 169800 Rectifier Module

Name: Siemens SIMOREG DC Master Modules – 169800 Rectifier Module
Brand: Siemens

Model: 169800

Brand Siemens

Series 169800 Rectifier Module

Model 169800

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Siemens SIMOREG DC Master Series Technical Notes

The Siemens SIMOREG DC Master series represents one of the most widely deployed DC drive control platforms in global heavy industry. Installed across petrochemical refineries, nuclear power auxiliary systems, steel rolling mills, paper pulp processing lines, and offshore platform winch drives, the SIMOREG DC Master (6RA70 / 6RA24 / 6RA26 / 6RA28 series) has served as the backbone of variable-speed DC motor control for decades. The 169800 rectifier module is a core power conversion component within this ecosystem, responsible for converting three-phase AC supply into regulated DC bus voltage for armature and field circuits. Its deployment spans both standalone drive configurations and multi-drive common bus architectures typical of large industrial installations.

The Evolution of SIMOREG Architecture

The SIMOREG product line originated in the early 1980s as Siemens' answer to the growing demand for digitally controlled DC drives in heavy process industries. The first generation, the 6RA24 series, used analog control boards with discrete thyristor firing circuits. By the late 1980s, the 6RA26 introduced hybrid digital-analog control, enabling basic fieldbus interfacing via RS-485. The pivotal transition came with the 6RA70 SIMOREG DC Master platform in the mid-1990s, which introduced a fully digital ASIC-based control architecture, PROFIBUS-DP native integration, and a modular hardware design separating power electronics from control electronics. This modularity is the reason components such as the 169800 rectifier module remain field-replaceable without full drive replacement. The 6RA80 SINAMICS DCM series, introduced circa 2010, represents the current-generation successor, offering PROFINET/EtherNet-IP connectivity and integrated safety functions (STO/SS1). However, the installed base of 6RA70 and earlier platforms in continuous-process industries means demand for legacy modules including the 169800 remains active well into the 2020s. Compatibility between generations is limited: 6RA70 control boards are not interchangeable with 6RA80 hardware, and 6RA24/26 power stacks require series-specific gate drive boards.

SIMOREG Full Catalog & Functionalities (SKU List)

The following SKUs represent verified components within the Siemens SIMOREG DC Master ecosystem. Each entry reflects a distinct functional role within the drive architecture:

169800: Three-phase rectifier module, DC bus power conversion for armature supply
6RA7013-6DV62-0: SIMOREG DC Master 15A compact unit, single quadrant, 400V AC input
6RA7018-6DV62-0: SIMOREG DC Master 30A compact unit, single quadrant, 400V AC input
6RA7025-6DV62-0: SIMOREG DC Master 60A, four-quadrant regenerative, 400V AC
6RA7031-6DV62-0: SIMOREG DC Master 90A, four-quadrant, integrated field supply
6RA7075-6DV62-0: SIMOREG DC Master 210A, four-quadrant, PROFIBUS-DP interface
6RA7085-6DV62-0: SIMOREG DC Master 280A, four-quadrant, common DC bus capable
6RA7090-6DV62-0: SIMOREG DC Master 400A, four-quadrant, extended I/O board
6RA7095-6DV62-0: SIMOREG DC Master 600A, four-quadrant, parallel thyristor stack
C98043-A7002-L1: SIMOREG control board (CUD1), main digital control unit for 6RA70
C98043-A7003-L1: SIMOREG expansion board (ADB), analog I/O expansion for CUD1
C98043-A7004-L1: SIMOREG technology board (T400), cam controller / positioning option
6SY7010-0AA50: Thyristor module, 250A / 1200V, replacement for 6RA70 power stack
6SY7010-0AA52: Thyristor module, 400A / 1200V, parallel stack configuration
6SE7090-0XX84-0AB0: SIMOVERT MASTERDRIVES interface adapter, legacy bus bridge
6RA2428-6DV62-0: SIMOREG K 6RA24 series, 75A, analog control, field retrofit candidate
6RA2631-6DV62-0: SIMOREG D 6RA26 series, 125A, hybrid control board
6RA8025-6DV62-0AA0: SINAMICS DCM successor, 90A, PROFINET, STO safety function
6RA8085-6DV62-0AA0: SINAMICS DCM successor, 280A, EtherNet/IP, replaces 6RA7085

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