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Kollmorgen CR20561

Product Introduction: The CR20561 is a member of the CD Series​ (CR-line) of servo drives, typically rated around 20 A continuous, designed as torque/position/speed drives for medium-power automation, often seen in SynqNet or analog-configured systems; CR20560/CR20561 share the same power stage with different interface/firmware options.

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Detailed content

  • Technical Specifications & Performance Parameters:
    • Continuous Current: ~20 A​ (CR20560/CR20561 class)
    • Input Voltage: 110–240 VAC (single/three-phase) or 24VDC control (depending on variant)
    • Communication (select models): Profibus DP, Modbus RTU, SynqNet (CD SynqNet based on CD drive)
    • Feedback: Resolver, incremental/sine encoders
    • Control Modes: Torque (primary in CD SynqNet), speed, position
    • Response Time: ~2 ms (high-response variants)
    • Protection: Overcurrent, overvoltage, thermal, redundant power input (some 24V models), DC1500V isolation, reverse polarity
    • Operating Temp: 0–45°C (some -10 to 50°C)
    • IP Rating: IP20 (drive), some references note IP67 for specific ruggedized enclosures—standard CR drives are IP20
    • Interfaces: 9-pin Sub-D (Profibus), screw terminals, encoder connectors
  • Function Features:
    • CD SynqNet variant designed as high-update-rate torque drive commanded from SynqNet master.
    • Enhanced I/O count and parameter set vs. earlier CD2 series.
    • Dual-power redundancy (in 24V control versions).
    • Compatible with AKM motors.
  • Applications: Mid-size robotic arms, CNC spindle/axis drives, packaging lines, material forming, automotive assembly.
  • Material & Structure: Enclosed metal case with finned heatsink, internal switch-mode power supply, isolated control/drive sections, D-Sub and terminal-block interfaces.
  • Working Principle: Digital/analog control section receives bus or analog command; torque/speed/position loops executed on DSP; PWM inverter stage drives motor; feedback device provides commutation/loop closure; SynqNet/Ethernet variants synchronize multi-axis updates via deterministic network.
  • Installation Requirements: Panel mount inside IP54+ cabinet; separate power/feedback cabling; terminate fieldbus correctly (e.g., Profibus terminator ON at last node); ensure earth ground <0.1Ω.
  • Precautions: Verify model suffix (CR20560 vs CR20561) matches firmware/communication needs; Profibus baud rate must match network; do not mix 24V control and 240V power grounding improperly; observe maximum continuous current derating with temperature; backup parameters before replacement—CR series may not auto-detect motor defaults.

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