Kollmorgen S20630-DNS

Kollmorgen S20630-DNS

Product Overview: The S20630-DNS is a high-performance digital servo drive within the Kollmorgen SERVOSTAR S200 family. In the model number, “S20630” designates the drive model with 18A peak / 6A continuous current rating, “D” indicates DC bus input configuration, “N” indicates no option card installed, and “S” indicates the standard version. This drive is designed for low-power applications requiring compact form factor and high dynamic performance.

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Description

Kollmorgen S20630-DNS

Technical Specifications:

  • Input Voltage: 20–90 VDC (DC bus input)
  • Peak Output Current: 18A RMS
  • Continuous Output Current: 6A RMS (convection cooled at 40°C)
  • Current Loop Bandwidth: Up to 5 kHz
  • Velocity Loop Bandwidth: Up to 800 Hz
  • Feedback Resolution: 24-bit (Smart Feedback Device)
  • Update Rate: 1.25 MHz
  • Output Current Ripple Frequency: 31.2 kHz
  • Motor Electrical Frequency (max): 900 Hz
  • Protection Rating: IP20
  • Certifications: UL 508C recognized, CE marked, EN50178, EN61800-3 compliant

Functional Features:

  • All-digital industrial drive with industry-leading velocity loop bandwidth of 800 Hz
  • Smart Feedback Device (SFD) enables plug-and-play commissioning without manual servo loop tuning
  • Separate “Keep Alive” control power input allows rapid recovery from emergency stop conditions
  • Optically isolated inputs/outputs provide immunity to electrical noise
  • Positive locking connectors prevent accidental disconnection
  • Full fault protection including overcurrent, overvoltage, and overtemperature
  • Windows-based Graphical User Interface for simplified setup and diagnostics
  • Compatible with AKM servo motor family for complete servo control solution

Application Scenarios:

  • Semiconductor fabrication equipment
  • Electronic assembly machines
  • Medical devices
  • Packaging machinery
  • Woodworking equipment
  • FPD (Flat Panel Display) manufacturing

Performance Parameters:

  • Peak Stall Torque (with AKM21G): 1.44 Nm
  • Continuous Stall Torque (with AKM21G): 0.50 Nm
  • Maximum Speed (with AKM21G): 7,800 rpm
  • Position Loop Refresh Rate: 125 μs (8 kHz)
  • Speed Loop Refresh Rate: 62.5 μs (16 kHz)
  • Current Loop Refresh Rate: 0.67 μs (1.5 MHz)

Material Composition:

  • Housing: Aluminum alloy with integrated heat sink
  • Internal Components: Surface-mount PCB with DSP-based control
  • Connectors: Pluggable screw terminal blocks for power and I/O

Structural Characteristics: Compact DIN-rail or panel-mount form factor with dimensions of approximately 54.8mm wide × 175mm tall × 131.6mm deep (AC version). The DC input version features a narrower profile. All connectors and LED status indicators are accessible from the front panel.

Working Principle: The S200 drive employs sinusoidal current control with space vector modulation (SVM) to generate smooth three-phase currents for the connected brushless servo motor. The drive receives feedback from the Smart Feedback Device (SFD) or resolver, processes position and velocity information through nested control loops (current → velocity → position), and outputs PWM signals to the power stage to precisely control motor torque, speed, and position.

Installation Requirements:

  • Mount in a well-ventilated enclosure with ambient temperature not exceeding 40°C
  • Maintain minimum clearance for convection cooling airflow
  • Use shielded motor cables with proper grounding
  • Connect DC bus input with correct polarity
  • Ensure control power is connected separately for E-Stop recovery functionality

Usage Notes:

  • The “D” suffix indicates DC input; do not connect AC mains directly to this drive
  • Verify motor and drive current ratings are properly matched before commissioning
  • Use the Windows GUI software for initial parameter configuration
  • The SFD auto-tuning feature eliminates the need for manual loop tuning in most applications
  • Inspect connector tightness periodically to prevent intermittent connections

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