ELAU SM Series Servo Motors SM-140/30/210/P1/44/S1/B0

Technical Dossier

Product Details And Specifications

ELAU SM Series Servo Motors Technical Notes

The Evolution of ELAU SM Series Architecture

The ELAU SM series was introduced as part of the PacDrive platform in the late 1990s, designed to operate exclusively within the ELAU CANopen-based motion bus architecture. Early SM variants (SM-070, SM-100) targeted compact, low-inertia applications with flange sizes conforming to IEC 72 standards. The mid-generation SM-140 and SM-180 frames introduced higher torque density and expanded encoder options, including resolvers and multi-turn absolute encoders (Hiperface, EnDat), to support more demanding axis configurations.

Following Schneider Electric's acquisition of ELAU in 2006, the SM series continued production under the Schneider Electric / Lexium brand umbrella, with cross-compatibility maintained between legacy ELAU MC-4 drives and newer Lexium 32/62 platforms via firmware adaptation. As of the mid-2010s, the SM series entered its end-of-life phase, with Schneider Electric designating the Lexium SH/SHD series as the recommended migration path. However, due to the mechanical and electrical interface differences between generations, direct drop-in replacement is not always feasible without drive parameter reconfiguration or mechanical adapter plates, making original SM series units the preferred solution for installed-base maintenance.

ELAU SM Series Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly stocked configurations within the ELAU SM servo motor series. Configurations are defined by frame size, continuous stall torque, winding voltage, feedback type, shaft configuration, brake option, and connector orientation.

SM-070/30/060/P0/00/S1/B0: 70mm frame, 3.0 Nm stall torque, 60V winding, resolver feedback, plain shaft, no brake.

SM-070/30/060/P0/00/S1/B1: 70mm frame, 3.0 Nm stall torque, 60V winding, resolver feedback, plain shaft, with integrated holding brake.

SM-100/40/130/P0/00/S1/B0: 100mm frame, 4.0 Nm stall torque, 130V winding, resolver feedback, plain shaft, no brake.

SM-100/60/130/P0/00/S1/B0: 100mm frame, 6.0 Nm stall torque, 130V winding, resolver feedback, plain shaft, no brake.

SM-100/60/130/P0/00/S1/B1: 100mm frame, 6.0 Nm stall torque, 130V winding, resolver feedback, plain shaft, with holding brake.

SM-140/20/210/P1/44/S1/B0: 140mm frame, 2.0 Nm stall torque, 210V winding, Hiperface encoder, keyed shaft (44mm), no brake.

SM-140/30/210/P1/44/S1/B0: 140mm frame, 3.0 Nm continuous stall torque, 210V winding, Hiperface absolute encoder, keyed shaft (44mm), no brake. Standard mid-range axis motor for PacDrive C400 systems.

SM-140/30/210/P1/44/S1/B1: 140mm frame, 3.0 Nm stall torque, 210V winding, Hiperface encoder, keyed shaft, with integrated holding brake.

SM-140/50/210/P1/44/S1/B0: 140mm frame, 5.0 Nm stall torque, 210V winding, Hiperface encoder, keyed shaft, no brake.

SM-140/50/210/P1/44/S1/B1: 140mm frame, 5.0 Nm stall torque, 210V winding, Hiperface encoder, keyed shaft, with holding brake.

SM-140/70/210/P1/44/S1/B0: 140mm frame, 7.0 Nm stall torque, 210V winding, Hiperface encoder, keyed shaft, no brake.

SM-180/40/300/P1/55/S1/B0: 180mm frame, 4.0 Nm stall torque, 300V winding, Hiperface encoder, keyed shaft (55mm), no brake.

SM-180/75/300/P1/55/S1/B0: 180mm frame, 7.5 Nm stall torque, 300V winding, Hiperface encoder, keyed shaft, no brake.

SM-180/100/300/P1/55/S1/B0: 180mm frame, 10.0 Nm stall torque, 300V winding, Hiperface encoder, keyed shaft, no brake.

SM-180/100/300/P1/55/S1/B1: 180mm frame, 10.0 Nm stall torque, 300V winding, Hiperface encoder, keyed shaft, with integrated holding brake.

SM-180/150/300/P1/55/S1/B0: 180mm frame, 15.0 Nm stall torque, 300V winding, Hiperface encoder, keyed shaft, no brake. High-torque variant for heavy-load axis applications.

Quality Control for the ELAU SM Series Range

Each ELAU SM series motor processed through DriveKNMS undergoes a structured inspection protocol specific to the mechanical and electrical characteristics of the series. Inspection stages include: visual examination of the motor housing, shaft seal integrity, and connector body condition; winding resistance measurement across all three phases with phase-to-phase balance verification; insulation resistance testing at 500V DC (minimum 100 MΩ acceptance threshold); encoder signal verification using a compatible ELAU MC-4 or Schneider Electric Lexium drive in test mode, confirming absolute position data integrity for Hiperface variants; bearing condition assessment via manual rotation and vibration signature check; and brake engagement/release force measurement for B1 brake-equipped variants. Units that do not meet all acceptance criteria are quarantined and documented. No unit is dispatched without a completed inspection record.