Kollmorgen SERVOSTAR S406AM-CA Digital Servo Drive

Kollmorgen SERVOSTAR S406AM-CA Digital Servo Drive

Unique Product Description

The Kollmorgen S406AM-CA is a highly efficient, space-saving digital servo amplifier belonging to the legacy SERVOSTAR 400 (S400) product family.

This module is engineered specifically as a Master Axis drive (indicated by the “M” suffix), featuring an integrated power supply and regeneration circuit capable of driving its own brushless synchronous servomotor while distributing power to up to seven connected extension axes.

Operating within a rated supply voltage range of 230V to 400V AC, the S406AM-CA delivers a 6A RMS continuous output current and a rated installed power of up to 7 kVA for S1 continuous duty.

Housed in an ultra-compact 70mm wide enclosure, it maximizes power density within standard 300mm switchgear control cabinets.

The drive features integrated complete digital control loops—including digital current, programmable speed, and position controllers—along with built-in encoder emulation and an onboard CANopen fieldbus interface for seamless high-speed system integration.

Technical Specifications at a Glance

Product Advantages and Features

Master-Slave Bus Architecture: As a Master Module, it simplifies system topology by distributing DC bus power internally to up to 7 extension axis modules, slashing wiring time and panel space requirements.

Integrated Mains Filter: Comes equipped with a built-in mains filter and full shielding termination connections directly at the amplifier to optimize electromagnetic compatibility (EMC).

Comprehensive Feedback Support: Universal internal interfaces natively decode feedback signals from Resolvers and high-resolution sine-cosine encoders.

Robust Diagnostic Display: Features a front-panel LED status indicator and an integrated keyboard interface for immediate fault code monitoring and onboard programming.

All-Digital Precision Control: Offers fully software-programmable control loops with built-in oscilloscope functions and Bode plot diagnostics via setup software.

Application Cases

The compact, multi-axis capability of the SERVOSTAR S406AM-CA makes it ideal for central-cabinet automation applications:

Multi-Axis Robotic Arms: Acts as the main power hub and control master for articulated or Cartesian robotic joints in pick-and-place systems.

High-Speed Packaging Systems: Controls indexing tables, filling pumps, and multi-axis cartoning machinery where synchronized coordination is vital.

Textile & Weaving Automation: Manages multiple coordinated slave axes for winding, tensioning, and knitting operations without complex external wiring.

Printing Press Control: Drives precise synchronized registration rollers across continuous web material processing lines.

Related Models & Other Models in the Same Series

The SERVOSTAR 400 series splits modules into Master (M) variants with onboard power supplies and Axis/Extension (A) modules that rely on a Master for DC bus link voltage.

Current-Rated Siblings (Master Modules)

S403AM-CA: 3 Amps continuous rated Master Module (230V/400V).

SERVOSTAR 443M-C: 3 Amps high-voltage specialized series Master Module.

SERVOSTAR 446M-C: 6 Amps high-voltage alternative Master variant.

Companion Axis Expansion Modules (Slaves)

S403AA-CA: 3 Amps continuous Extension Axis Module.

S406AA-CA: 6 Amps continuous Extension Axis Module (draws power from S406AM).

Installation and Maintenance

Installation Best Practices

Forced Ventilation Required: To achieve its full 6A rated output power under peak ambient conditions, the S406AM-CA requires an electrical add-on fan. Ensure the fan shroud is clean and unblocked.

Mounting Clearance: Must be mounted vertically. Ensure significant open clearance space directly below and above the amplifier to guarantee uninhibited convection airflow.

Enclosure Protection: The drive has an IP20 rating. It must be installed inside a clean, dry, closed control cabinet meeting at least the IP54 protection class to limit ambient operational temperature below 45°C.

Earthing Safety: To eliminate shock hazards and electronic noise, the drive frame must be securely earthed directly to the central protective earth (PE) busbar using a low-resistance connection.

Maintenance and Troubleshooting Guide

Fault Code Reference:

F01 – Heatsink Over-temperature: Triggered when internal temp goes below 0°C or climbs above 100°C. Clean the fan and cabinet filters.

F12 – Motor Phase Missing: An output phase is open at drive enable. Che