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Kollmorgen S61401-PB

Product Introduction:​
The S61401-PB is a member of Kollmorgen’s SERVOSTAR 600 series, designed as a compact single-axis servo amplifier for medium-power industrial automation. It converts control signals into precise three-phase motor currents using Space Vector Modulation (SVM) and supports multiple feedback and communication protocols.
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Technical Specifications:
  • Input Voltage:​ 3-phase 230 VAC (±10%), 50/60 Hz (some configurations support 240–480 VAC)
  • Rated Output Current:​ 14 A RMS (continuous)
  • Peak Output Current:​ 42 A (varies by model, 28 A in some references)
  • Rated Power:​ Approx. 5.2 kVA / up to 5 kW motor compatibility
  • Control Bandwidth:​ Velocity loop up to 700 Hz; Position loop 1–120 Hz
  • Update Rate:​ 700 kHz
  • Communication Interfaces:​ CANopen, Modbus RTU, optional PROFIBUS
  • Feedback Support:​ Incremental encoder, resolver, Hiperface, EnDat (via option cards)
  • Protection Level:​ IP20
  • Dimensions (H×W×D):​ ~150 × 55 × 130 mm (small form factor); larger 600-series units ~275 × 100 × 265 mm
  • Weight:​ ~1.0–4.0 kg depending on configuration
  • Operating Temp:​ 0 to +45/+50 °C
  • Safety:​ Overcurrent, overvoltage, undervoltage, overtemperature, STO (selected models)
Functional Characteristics:
  • Built-in motor auto-identification and full-frequency autotuning
  • Electronic gearing and camming functions
  • Efficient heat dissipation design (natural or fan-assisted convection)
  • Plug-in detachable screw terminals and D-sub connectors for feedback/I/O
Application Scenarios:
  • Small-to-medium CNC machines
  • Automated assembly lines
  • Printing and packaging machinery
  • Textile machines
  • Medical diagnostic equipment
Structural Features:
  • Book-style compact housing for control cabinet mounting
  • DIN rail or panel mount compatible
  • Integrated braking control circuitry
Working Principle:​
Receives position/speed/torque commands from a PLC or motion controller via fieldbus or analog/pulse interfaces, processes them through a digital current loop, and generates SVM-modulated three-phase PWM output to drive brushless servo motors with high precision.
Installation Requirements:
  • Install inside a grounded control cabinet with adequate clearance for airflow
  • Ensure proper separation from high-noise power lines
  • Use correctly sized fusing and external regenerative resistors if required
Usage Precautions:
  • Do not exceed rated bus voltage (up to 675 VDC link typical)
  • Verify motor inductance and current match before commissioning
  • Perform autotuning only with the load mechanically safe

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