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Kollmorgen S403AM-CA

Basic Identification

  • Full Model Number: S403AM-CA
  • Brand: Kollmorgen
  • Product Line Series: SERVOSTAR 400 (S400) Legacy Digital Servo Drive
  • Product Category: Vintage Single-Axis Servo Amplifier (Discontinued Production, Industrial Spare Part Grade)
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Detailed content

Product Overview

S403AM-CA is a compact digital servo drive from the legacy ServoStar 400 series, designed for low-to-medium power industrial automation axes under 115/230VAC single-phase power input. Fully programmable motion controller integrated within drive hardware, supporting standalone motion sequence execution without external PLC, widely deployed on older generation packaging, textile, and CNC machinery as original factory matching drive unit.

Core Electrical Specifications

  1. Power Input: 1Φ 115–230 VAC 50/60Hz
  2. Continuous Output Current: 3 Arms RMS; Peak Output Current: 9 Arms RMS
  3. Supported Motor Compatibility: AKM small/medium frame brushless servo motors, Goldline synchronous servo motors
  4. Feedback Signal Compatibility: Incremental TTL encoder, resolver, 1Vpp sine encoder
  5. Built-in Motion Program Memory: Stores maximum 128 independent motion task subroutines
  6. Communication Interfaces: RS232 serial port, analog ±10V velocity/torque command, step/direction pulse input

Built-In Functional Modules

  1. Standalone motion sequencing control with electronic gearing, soft limit, homing routine programming
  2. Analog input command interface for compatibility with legacy analog motion controllers
  3. Digital input/output opto-isolated terminal block for external sensor, limit switch, relay actuation control
  4. Hardware fault protection suite: overcurrent, overvoltage, thermal overload, encoder loss, motor short circuit
  5. Onboard EMC input filter to reduce grid harmonic interference without external filter hardware
  6. Manual potentiometer for velocity trim adjustment during on-site commissioning

Structural & Material Parameters

  • Enclosure: Black coated steel sheet metal chassis
  • Heat Dissipation: Passive aluminum extrusion heat sink (no integrated cooling fan)
  • Mounting Form: Book vertical cabinet DIN rail compatible mounting
  • Protection Class: IP20 cabinet-only installation
  • Dimensions: W70 × H245 × D160mm; Net Weight: 1.42kg

Working Mechanism

Single-phase AC mains rectified to fixed DC bus voltage, DSP digital control chip executes vector FOC control algorithm to output three-phase modulated AC for servo motor driving. Motion tasks pre-programmed via RS232 Kollmorgen setup software stored in non-volatile flash memory; drive executes positioning, velocity profiling, and electronic cam motion autonomously upon digital trigger input from machine sensors. Analog ±10V or pulse/direction command input supports external upper controller synchronized operation mode.

Product Advantages

  1. Standalone motion operation capability eliminates PLC hardware investment for simple single-axis machinery
  2. Native compatibility with vintage analog machine control systems via ±10V analog command port
  3. Passive heat sink design zero fan wear failure risk for low-maintenance factory equipment
  4. Compact narrow width saves cabinet space for multi-axis dense machine layouts
  5. Full CE, UL safety certification for global vintage machine spare part replacement

Applicable Industrial Fields

Legacy textile looms, older generation printing presses, medium-small packaging filling machines, vintage vertical milling CNC equipment, automated conveyor positioning axes, factory retrofitting servo upgrade projects.

Mandatory Installation Standards

  1. Vertical cabinet mounting only; minimum top/bottom heat gap 35mm, side clearance ≥60mm
  2. Operating ambient temperature range 0°C to 40°C; derate output power 3% per °C above 40°C
  3. All motor and feedback cables must use shielded twisted wiring with full EMC grounding
  4. Install external braking resistor for high-cycle rapid deceleration load conditions to prevent DC bus overvoltage faults
  5. Cabinet ventilation fan mandatory if multiple S403AM drives installed within single compact electrical enclosure

Critical Usage Limitations & Precautions

  1. Production discontinued since 2012; spare part supply limited, no original factory firmware update support
  2. RS232 serial communication only; no modern EtherCAT/Ethernet industrial bus support
  3. Maximum motion program memory limited to 128 subroutines; unsuitable for complex multi-axis synchronized motion
  4. Do not operate above 45°C ambient temperature; passive heat sink lacks forced cooling capacity
  5. Power cycle must be separated by minimum 30-second interval to avoid DC bus capacitor charging circuit damage
  6. Annual heat sink dust cleaning required to prevent thermal overload shutdown during continuous production shifts

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