Pacific Scientific SCE906A2-002-01 SCE906A200201

Technical Dossier

Product Details And Specifications

Pacific Scientific SC906 Series Technical Notes

The Evolution of SC906 Architecture

The SC906 series was introduced by Pacific Scientific (subsequently acquired by Danaher Corporation and integrated into the Kollmorgen / Thomson Industries portfolio) as a successor to earlier analog servo amplifier platforms. The original SC906 architecture employed hybrid analog-digital control loops, with a DSP-based velocity regulator and analog current loop. This design philosophy prioritized deterministic response times compatible with the PLCs and DCS controllers of the 1990s and early 2000s, particularly Allen-Bradley PLC-5, Siemens S5, and Modicon Quantum systems.

Over successive hardware revisions, Pacific Scientific introduced enhanced EMC filtering, expanded fault diagnostics accessible via front-panel LED codes, and wider input voltage tolerance bands (±10% on nominal AC supply). The SCE-prefix variants (e.g., SCE906A2-002-01) denote enhanced-specification builds with improved thermal management and conformal-coated PCBs suited for humid or chemically aggressive environments. The SC906 series entered end-of-life status as the industry migrated toward EtherCAT and SERCOS III fieldbus-native drives; however, the installed base remains active and replacement units continue to be sourced through specialist distributors.

SC906 Full Catalog & Functionalities (SKU List)

The following SKUs represent the documented SC906 series product range. Each unit is a standalone servo drive module unless otherwise noted.

SCE906A2-002-01 (SCE906A200201): Enhanced-spec 2A continuous / 6A peak digital servo drive, conformal coat, analog ±10V command input.
SC906A2-002-01: Standard-spec 2A continuous / 6A peak servo drive, analog velocity mode, incremental encoder feedback.
SC906A2-004-01: 4A continuous / 12A peak servo drive, single-axis, ±10V analog command, RS-232 configuration port.
SC906A2-008-01: 8A continuous / 24A peak servo drive, enhanced current loop bandwidth, DIN rail mount.
SC906A2-015-01: 15A continuous / 45A peak servo drive, three-phase 230VAC input, regenerative braking resistor terminal.
SC906A2-030-01: 30A continuous / 90A peak servo drive, high-inertia load compensation, extended fault log memory.
SCE906A2-004-01: Enhanced-spec 4A continuous / 12A peak, conformal coat, humidity-rated enclosure variant.
SCE906A2-008-01: Enhanced-spec 8A continuous / 24A peak, conformal coat, extended operating temperature range.
SCE906A2-015-01: Enhanced-spec 15A continuous / 45A peak, conformal coat, nuclear-grade documentation available.
SC906A2-002-02: Revision 02 hardware, 2A continuous, updated gate driver topology, improved short-circuit protection.
SC906A2-004-02: Revision 02 hardware, 4A continuous, updated firmware for expanded motor compatibility.
SC906A2-008-02: Revision 02 hardware, 8A continuous, revised power stage with lower switching losses.
SC906A2-015-02: Revision 02 hardware, 15A continuous, enhanced resolver interface option.
SC906A2-030-02: Revision 02 hardware, 30A continuous, updated regeneration circuit, CE-marked variant.
SC906A2-060-01: 60A continuous / 180A peak servo drive, large-frame chassis, forced-air cooling, three-phase 460VAC input.