Siemens SIMOVERT MASTERDRIVES 6SE70 Modules: 6SE7035-1EJ84-1BH0 ABO Module

Technical Dossier

Product Details And Specifications

Siemens SIMOVERT MASTERDRIVES 6SE70 Series Technical Notes

The Siemens SIMOVERT MASTERDRIVES 6SE70 series is one of the most widely deployed variable-speed drive platforms in global heavy industry. Installed across petrochemical refineries, nuclear power auxiliary systems, offshore platforms, cement plants, steel mills, and large-scale water treatment facilities, the 6SE70 platform covers power ranges from 0.55 kW to several megawatts in both vector control (VC) and motion control (MC) variants. Its modular architecture — separating the power section, control board, and option boards — made it the reference standard for distributed drive systems throughout the 1990s and 2000s. The platform remains operational in thousands of installed bases worldwide, driving demand for spare parts, repair services, and lifecycle extension support.

The Evolution of 6SE70 Architecture

The SIMOVERT MASTERDRIVES 6SE70 platform was introduced by Siemens in the early 1990s as a successor to the SIMOVERT P and SIMOVERT A families. The architecture is built around a modular backplane bus (the so-called CU/SCB/TSY/CBC board stack), allowing independent replacement of the control unit (CU), power section, and communication adapters without full drive replacement.

Early variants used the CU1 and CU2 control boards with PROFIBUS-DP via the CBP (Communication Board PROFIBUS). Later revisions introduced the CU3 board with enhanced diagnostic capability and expanded parameter sets. The T400 technology board enabled cam-based positioning and winder control directly within the drive. The SBP (Sensor Board Pulse) and SBM (Sensor Board Magnetic) extended encoder feedback options.

6SE70 Full Catalog & Functionalities (SKU List)

The following SKUs represent the core module range of the SIMOVERT MASTERDRIVES 6SE70 series, classified by functional category. All models listed are verified members of this platform family.

Control Units (CU)

• 6SE7090-0XX84-0AB0: CU1 control board, basic vector control, RS485 interface, standard parameter set
• 6SE7090-0XX84-0FF0: CU2 control board, enhanced vector control, extended I/O, dual encoder input
• 6SE7090-0XX84-0BC0: CU3 control board, motion control variant, high-resolution speed feedback, expanded diagnostics

Option / Technology Boards

• 6SE7090-0XX84-0KA0: T400 technology board, cam controller, winder/unwinder positioning, 4 analog outputs
• 6SE7090-0XX84-0FA0: SBP sensor board, HTL/TTL pulse encoder interface, max 300 kHz input frequency
• 6SE7090-0XX84-0FB0: SBM sensor board, resolver interface, 2–36 pole resolver support
• 6SE7090-0XX84-0GA0: TSY synchronizing board, phase synchronization between multiple drives
• 6SE7090-0XX84-0HA0: SCB1 serial communication board, USS protocol, peer-to-peer link
• 6SE7090-0XX84-0HB0: SCB2 serial communication board, fiber-optic USS, electrically isolated

Communication Boards

• 6GK1500-0FC10: CBP2 PROFIBUS-DP communication board, 12 Mbit/s, plug-in for 6SE70 backplane
• 6SE7090-0XX84-0BJ0: CBC CAN communication board, CANopen DS301/DS402 profile
• 6SE7090-0XX84-0BK0: CBL DeviceNet communication board, Group 2 slave, 500 kbit/s

ABO / Brake Option Boards

• 6SE7035-1EJ84-1BH0: ABO module, active braking option, integrated chopper control for external braking resistor, frame size F, 132 kW class
• 6SE7031-8EF84-1BH0: ABO module, frame size E, 75 kW class, braking chopper with thermal monitoring
• 6SE7038-6GL84-1BH0: ABO module, frame size G, 315 kW class, high-current braking chopper

Power Sections

• 6SE7035-1EJ60-1AA0: Power section, 132 kW, 380–480 V, frame size F, IGBT inverter stage
• 6SE7031-8EF60-1AA0: Power section, 75 kW, 380–480 V, frame size E, standard inverter
• 6SE7038-6GL60-1AA0: Power section, 315 kW, 380–480 V, frame size G, high-power inverter
• 6SE7021-0EA61-1AA0: Power section, 4 kW, 380–480 V, frame size B, compact inverter

Sourcing Hard-to-Find & Obsolete 6SE70 Parts

For plants operating on 20+ year maintenance cycles — common in nuclear auxiliary systems, chemical processing, and municipal water infrastructure — DriveKNMS provides multi-year supply agreements with reserved inventory allocation.

Quality Control for the 6SE70 Range

• Visual Inspection: PCB trace integrity, capacitor condition (ESR measurement), relay contact condition, connector pin alignment.
• Powered Bench Test: Each control board is powered in a live 6SE70 chassis. Firmware version, parameter set integrity, and fault memory are verified.
• Bus Communication Test: CBP2/SCB/TSY boards are tested for correct PROFIBUS-DP or USS frame transmission using a protocol analyzer. Bit error rate must be zero over a 10-minute continuous test.
• ABO Chopper Test: ABO modules including the 6SE7035-1EJ84-1BH0 are tested under resistive load to verify chopper switching frequency, thermal cutoff response, and gate drive integrity.
• Burn-In: All refurbished units undergo a minimum 4-hour thermal burn-in at 45°C ambient before final inspection.