LTI CDB32.004.C2.4.SH Servo Drive – CDB32 Series

Technical Dossier

Product Details And Specifications

LTI CDB32 Series: Comprehensive Module Range and Technical Overview

The LTI (Linear Technology & Innovation, subsequently integrated into the Lenze Group) CDB32 series is a line of compact single-axis servo drives engineered for precision motion control in continuous-duty industrial environments. The series has accumulated a significant installed base across chemical processing plants, automotive assembly lines, paper & pulp mills, oil refinery auxiliary systems, and nuclear facility material handling equipment in Europe, Asia-Pacific, and the Americas.

The specific model CDB32.004.C2.4.SH is a 0.4 kW, 230V AC single-axis servo drive featuring integrated STO (Safe Torque Off, IEC 62061 SIL2 / EN 13849-1 PLd compliant), resolver feedback interface, 4-quadrant regenerative operation, and an integrated Class C2 EMC line filter. It represents the final production variant of the CDB32 platform before the series was superseded by the Lenze i700 and 9400 servo inverter families.

As the CDB32 series has entered its end-of-life phase, facilities operating this platform face a narrowing window for sourcing verified replacement units. DriveKNMS maintains active procurement channels, cross-reference databases, and incoming inspection protocols specifically structured for this series.

The Evolution of CDB32 Architecture

The CDB32 platform was introduced as a successor to LTI's earlier analog servo controller range, transitioning the product line to fully digital DSP-based current and velocity control loops. The architectural evolution proceeded through three identifiable generations:

Early Generation – CDB32.0xx (Base Variant): Resolver-only feedback, RS232/RS485 serial communication, onboard parameter storage for up to 4 parameter sets. Designed for standalone single-axis positioning without fieldbus dependency. No integrated safety function; external safety relay required for STO-equivalent behavior.

Mid Generation – CDB32.0xx.C2 (Fieldbus Integration): Introduction of a modular option card slot supporting CANopen (DS402 motion profile) and PROFIBUS-DP (GSD-based cyclic I/O). Expanded non-volatile parameter memory, improved IGBT thermal management, and revised EMC filtering architecture. This generation enabled CDB32 integration into distributed PLC/DCS architectures without external gateway hardware.

Late Generation – CDB32.0xx.C2.4.SH (Safety + Enhanced Performance): Addition of hardware STO function via dual-channel relay chain, 4-quadrant operation with regenerative braking capability, enhanced EMC filter (Class C2 integrated), and revised firmware with extended diagnostic logging. This is the final production variant. Lenze's official last-time-buy window for most SKUs in this generation has closed.

Migration Note: The CDB32 uses a proprietary parameter structure incompatible with the Lenze i700 or 9400 platforms. Full migration requires parameter re-commissioning, motor cable re-termination, and in many cases, encoder/resolver adapter hardware. For facilities operating 8 or more CDB32 axes, lifecycle extension via spare parts procurement typically delivers lower total cost over a 3–5 year horizon compared to full platform migration.

CDB32 Full Catalog & Functionalities (SKU List)

The following represents the verified CDB32 product range. All SKUs listed are genuine LTI/Lenze units. Models are organized by power class and function. DriveKNMS does not list unverified or speculative part numbers.

Single-Axis Servo Drives – 230V AC Input

• CDB32.001.C2.4.SH: 0.1 kW, 230V AC, STO SIL2, resolver input, CANopen option slot
• CDB32.002.C2.4.SH: 0.2 kW, 230V AC, STO SIL2, resolver/incremental encoder dual input
• CDB32.004.C2.4.SH: 0.4 kW, 230V AC, STO SIL2, 4-quadrant, integrated C2 EMC filter (this unit)
• CDB32.008.C2.4.SH: 0.8 kW, 230V AC, STO SIL2, extended peak current for high-inertia loads
• CDB32.015.C2.4.SH: 1.5 kW, 230V AC, STO SIL2, enhanced braking chopper, expanded I/O

Single-Axis Servo Drives – 400V AC Three-Phase Input

• CDB32.004.C2.4.SH-400: 0.4 kW, 400V 3-phase, STO SIL2, resolver feedback, PROFIBUS option
• CDB32.008.C2.4.SH-400: 0.8 kW, 400V 3-phase, STO SIL2, PROFIBUS-DP slave option card
• CDB32.015.C2.4.SH-400: 1.5 kW, 400V 3-phase, STO SIL2, extended digital I/O expansion
• CDB32.022.C2.4.SH-400: 2.2 kW, 400V 3-phase, STO SIL2, high-cycle duty thermal rating
• CDB32.037.C2.4.SH-400: 3.7 kW, 400V 3-phase, STO SIL2, servo gearmotor combination rated
• CDB32.055.C2.4.SH-400: 5.5 kW, 400V 3-phase, STO SIL2, maximum frame size in CDB32 range

Communication & Fieldbus Option Modules

• CDB32-CANOPEN: CANopen option card, DS402 motion profile, 1 Mbit/s max bus speed
• CDB32-PROFIBUS: PROFIBUS-DP slave card, GSD file available, 12 Mbit/s max
• CDB32-DEVICENET: DeviceNet slave option card for North American control architectures

Accessories & Ancillary Components

• CDB32-BRK-100: External braking resistor, 100W / 47Ω, for high-deceleration duty cycles
• CDB32-EMC-EXT: External Class C2 EMC line filter for units without integrated filtering
• CDB32-KPD: Detachable operator keypad with parameter upload/download function
• CDB32-PC-CABLE: RS232 PC interface cable for parameter software (LTI DriveManager)

Sourcing Hard-to-Find & Obsolete CDB32 Parts

The CDB32 series is no longer in active production. This creates three distinct procurement risks for maintenance and reliability teams:

Lead Time Exposure: Standard distribution channels report 16–26 week lead times for remaining new-old-stock (NOS) units where available. Unplanned drive failures in continuous-process environments cannot absorb this lead time without production impact.

Counterfeit and Misrepresentation Risk: As genuine stock depletes from authorized channels, the secondary market fills with refurbished, relabeled, or non-original units. Without structured incoming inspection, procurement teams absorb the full quality and reliability risk of these units.

Documentation and Compliance Gaps: Older CDB32 units may lack current CE declarations or UKCA markings. This creates audit exposure for facilities subject to Machinery Directive (2006/42/EC) or UK PSSR reviews.

DriveKNMS addresses each risk through: a live inventory database updated on a weekly cycle; 48-point electrical verification on all non-new units prior to shipment; and full export documentation packages including EUR.1 movement certificates, commercial invoices, and packing lists formatted for customs clearance in the EU, UK, US, UAE, and Southeast Asian markets. Long-term maintenance agreements (LTMAs) covering multi-year CDB32 spare parts reservation are available on request.

Quality Control for the CDB32 Range

The CDB32's internal architecture includes a DSP-based current control loop, IGBT power stage, resolver interface circuit, STO relay chain, and fieldbus option card interface — each requiring targeted functional verification before shipment. DriveKNMS applies the following protocol to all CDB32 units processed through its facility:

• Power Stage Load Test: Full rated current cycling for 30 continuous minutes. IGBT gate drive waveforms verified against factory reference oscillograms.
• Resolver Interface Verification: Resolver signal simulation at 2V RMS / 10 kHz carrier frequency. Position accuracy confirmed to ±1 LSB across full electrical cycle.
• STO Function Test: STO input de-energized under active load condition. Torque removal confirmed within 10 ms per IEC 62061 SIL2 timing requirement. Dual-channel relay continuity verified independently.
• Fieldbus Communication Test: CANopen and PROFIBUS option cards tested with live PLC master. Node address recognition, cyclic PDO data exchange, and diagnostic telegram response verified.
• Thermal Imaging Scan: Infrared inspection post-load test to identify cold solder joints, failing electrolytic capacitors, or abnormal junction temperatures not detectable under standard visual inspection.
• Parameter Integrity Check: Factory default parameter set loaded and verified against published reference. Customer-specific parameter files (exported from LTI DriveManager) can be pre-loaded on request prior to shipment.

For RFQ submission, technical cross-reference, datasheet requests, or bulk procurement inquiries on the LTI CDB32 series and related Lenze servo drive platforms:

• Email: [email protected]
• WhatsApp: +86 18359293191
• Web: driveknms.com