Kollmorgen SERVOSTAR 443M-C S403AM-CA Servo Drive

Technical Dossier

Product Details And Specifications

Kollmorgen SERVOSTAR Series: Comprehensive Module Range and Technical Overview

The Kollmorgen SERVOSTAR series is a family of digital servo drives deployed across heavy industrial sectors including chemical processing plants, nuclear power facilities, oil refineries, and precision manufacturing lines. The SERVOSTAR platform has established a dominant installed base in motion control applications requiring high dynamic response, multi-axis synchronization, and deterministic fieldbus communication. The SERVOSTAR 443M-C (S403AM-CA) is a compact, multi-axis servo amplifier module within this family, designed for integration into coordinated motion systems where space efficiency and axis density are critical parameters.

The Evolution of SERVOSTAR Architecture

The SERVOSTAR product line originated from Kollmorgen's acquisition of the Seidel servo drive technology base and has undergone multiple architectural generations. Early SERVOSTAR 600/601 units operated as standalone single-axis drives with analog command interfaces. The introduction of the SERVOSTAR S300 and S600 series brought integrated digital fieldbus support (CANopen, PROFIBUS-DP, EtherCAT), enabling tighter multi-axis coordination. The SERVOSTAR CD and CP series introduced compact panel-mount form factors for OEM machine builders. The M-series (including the 443M-C) represents the modular multi-axis architecture, where a single power supply module feeds multiple axis modules sharing a common DC bus — reducing cabinet footprint and simplifying wiring. Compatibility across generations is limited: S300/S600 firmware and parameter sets are not directly portable to M-series hardware. Legacy analog command interfaces (±10 V) remain available on most variants for backward compatibility with older CNC controllers. The SERVOSTAR WorkBench software platform provides unified commissioning across the S300, S600, and M-series, though hardware-specific firmware versions must be matched precisely.

SERVOSTAR Full Catalog & Functionalities (SKU List)

The following SKUs represent verified, commonly stocked models within the Kollmorgen SERVOSTAR product family. Models are classified by functional role:

Multi-Axis Modules (M-Series)

• SERVOSTAR 443M-C S403AM-CA: 3-axis compact servo amplifier module, 4A continuous per axis, CANopen interface
• SERVOSTAR 446M-C S406AM-CA: 3-axis compact module, 6A continuous per axis, CANopen interface
• SERVOSTAR 443M-P S403AM-PB: 3-axis compact module, 4A per axis, PROFIBUS-DP interface
• SERVOSTAR 446M-P S406AM-PB: 3-axis compact module, 6A per axis, PROFIBUS-DP interface
• SERVOSTAR 443M-E S403AM-EC: 3-axis compact module, 4A per axis, EtherCAT interface
• SERVOSTAR 446M-E S406AM-EC: 3-axis compact module, 6A per axis, EtherCAT interface
• SERVOSTAR PSM-24 S024PS: 24V auxiliary power supply module for M-series backplane
• SERVOSTAR PSM-48 S048PS: 48V DC bus power supply module, M-series shared bus

S600 Series — Single-Axis Drives

• SERVOSTAR S601: Single-axis drive, 1A continuous, analog/CANopen, panel mount
• SERVOSTAR S606: Single-axis drive, 6A continuous, analog/CANopen, panel mount
• SERVOSTAR S616: Single-axis drive, 16A continuous, CANopen/PROFIBUS, panel mount
• SERVOSTAR S620: Single-axis drive, 20A continuous, EtherCAT capable, panel mount
• SERVOSTAR S640: Single-axis drive, 40A continuous, high-power applications

S300 Series — Compact Single-Axis Drives

• SERVOSTAR S303: Compact single-axis, 3A continuous, CANopen, DIN-rail mount
• SERVOSTAR S306: Compact single-axis, 6A continuous, CANopen/PROFIBUS, DIN-rail mount
• SERVOSTAR S312: Compact single-axis, 12A continuous, multi-fieldbus, DIN-rail mount
• SERVOSTAR S324: Compact single-axis, 24A continuous, high-current DIN-rail variant

Sourcing Hard-to-Find & Obsolete SERVOSTAR Parts

The SERVOSTAR M-series and several S600 variants have entered end-of-life status with Kollmorgen's official distribution channels. DriveKNMS maintains a dedicated inventory of new-surplus, refurbished, and tested-functional SERVOSTAR modules to support facilities operating legacy motion control systems where full platform migration is not operationally or economically viable. Our sourcing network covers original factory-sealed stock, de-installed units from decommissioned production lines, and exchange programs for core returns. For the SERVOSTAR 443M-C S403AM-CA specifically, DriveKNMS holds verified stock and can provide unit-level testing reports prior to shipment. Long-term maintenance contracts are available for facilities requiring guaranteed availability windows of 3–10 years beyond OEM support termination.

Quality Control for the SERVOSTAR Range

SERVOSTAR M-series modules incorporate a shared DC bus backplane and inter-axis communication logic that requires functional validation beyond basic power-on testing. DriveKNMS applies the following test protocol to all SERVOSTAR units processed through our facility: (1) Visual inspection of power stage components, bus capacitors, and gate driver circuits; (2) DC bus isolation resistance measurement; (3) Firmware version verification and parameter backup via SERVOSTAR WorkBench; (4) Dynamic load simulation across the rated current envelope for each axis channel; (5) Fieldbus communication integrity test (CANopen node enumeration and PDO mapping verification for -CA variants); (6) Thermal cycling under load to identify latent component failures. Units that do not pass all six stages are quarantined and not offered for sale. Test reports are available upon request for critical infrastructure procurement.