NORD NORDAC SK700E Modules SK700E-551-340-A

Technical Dossier

Product Details And Specifications

NORD NORDAC SK700E Series Technical Notes

The NORDAC SK700E is a modular frequency inverter series developed by NORD Drivesystems (Getriebebau NORD GmbH & Co. KG), engineered for demanding continuous-duty applications in heavy industry. Installed across chemical processing plants, oil refineries, water treatment facilities, pulp and paper mills, and marine propulsion systems, the SK700E platform occupies a critical position in global industrial automation infrastructure. Its distributed intelligence architecture — where I/O expansion, fieldbus communication, and parameter storage are handled by plug-in option modules rather than integrated firmware — makes it a preferred choice for plant engineers who require deterministic control behavior and long-term spare parts availability. Installed base units remain operational in facilities with 15–25 year maintenance cycles, making lifecycle parts sourcing a primary procurement concern for maintenance engineers worldwide.

NORDAC SK700E Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly stocked modules within the NORDAC SK700E option and expansion ecosystem. Each entry reflects a discrete hardware function. Modules are not interchangeable across function categories.

I/O Expansion Modules

• SK700E-551-340-A: I/O expansion module, 6DI / 2AI / 2 relay outputs, 24 VDC logic, plug-in option slot
• SK700E-551-340-B: I/O expansion module, revised PCB revision B, enhanced EMC filtering, direct replacement for -A variant
• SK700E-551-110-A: Basic I/O module, 4DI / 1AI / 1 relay output, entry-level expansion for standard conveyor duty
• SK700E-551-220-A: Mid-range I/O module, 4DI / 2AI / 2DO, supports PTC thermistor input for motor protection

Fieldbus Communication Adapters

• SK TU3-PBR: PROFIBUS-DP slave adapter, 12 Mbit/s, GSD file configurable, for SK700E option slot
• SK TU3-CAO: CANopen DS301/DS402 adapter, 1 Mbit/s, EDS file configurable
• SK TU3-EIP: EtherNet/IP adapter, 100 Mbit/s, CIP motion profile, for SK700E and SK750E
• SK TU3-PNT: PROFINET IO device adapter, RT class 1, 100 Mbit/s, GSDML configurable
• SK TU3-MOD: Modbus RTU/TCP adapter, RS-485 / RJ45 dual interface
• SK TU3-DEV: DeviceNet adapter, Group 2 slave, 500 kbit/s

Parameter Storage & Commissioning Modules

• SK TU3-PAR: Parameter storage module, non-volatile EEPROM, enables drive cloning and parameter backup without PC
• SK TU3-CTR: Control terminal expansion, additional analog I/O channels, for multi-zone tension control

Encoder & Feedback Modules

• SK TU3-ENC: Incremental encoder interface, HTL/TTL, 5–30 VDC, max 300 kHz input frequency
• SK TU3-SSI: SSI absolute encoder interface, 25-bit resolution, for closed-loop positioning applications
• SK TU3-RES: Resolver interface module, 2–10 Vrms excitation, for high-vibration environments

Safety & Braking Modules

• SK TU3-STO: Safe Torque Off (STO) module, SIL 2 / PLd certified, IEC 62061 compliant, for press and hoist applications
• SK BRE4-xxx: External braking resistor assembly series, matched to SK700E power ratings from 0.37 kW to 75 kW

Sourcing Hard-to-Find & Obsolete NORDAC SK700E Parts

Q: How is condition confirmed before quotation?
A: Available condition, photos, test records and documentation are checked according to the requested model and sourcing channel before a formal RFQ response.