CR20560 Kollmorgen ServoStar CD Digital Servo Drive
The CR20560 is a high-power, compact digital servo drive from Kollmorgen’s ServoStar CD platform, engineered for 20A continuous output in demanding multi-axis industrial automation. It delivers advanced digital control, universal feedback support, flexible communication, and integrated safety, making it ideal for high-dynamic, medium-to-high power motion applications.
Overview
As a core member of the ServoStar CD series, the CR20560 is a robust 4‑quadrant servo amplifier designed to drive Kollmorgen AC synchronous and asynchronous servo motors. It features a high‑density book‑style housing, advanced DSP control, built‑in regenerative braking, and Safe Torque Off (STO). The drive supports resolver and encoder feedback, with multiple communication options for seamless integration into modern motion control systems. It is optimized for continuous, reliable operation in harsh industrial environments.
Key Specifications
Electrical Ratings
Manufacturer: Kollmorgen (Danaher Motion)
Model: CR20560 (ServoStar CD Series)
Continuous Output Current: 20 A (RMS)
Peak Output Current: 40 A for 500 ms
Continuous Input Current: 13 A (230 VAC, three‑phase)
Input Voltage: 190–230 VAC ±10%, three‑phase, 50–60 Hz
Input Power: 4.5 kVA (230 VAC, three‑phase)
DC Bus Protection: 90 VDC undervoltage, 430 VDC overvoltage
Modulation Frequency: 7–8 kHz
Logic Power: 24 VDC external supply
Feedback System
Primary Feedback: Resolver (single/multi‑speed)
Resolver Parameters: Transformation ratio 0.47, input 4.25 VAC, output 2 VAC, max resistance 120 Ω, max current 55 mA
Optional Feedback: Incremental encoder, absolute encoder (EnDat 2.2/BiSS), sine encoder
Feedback Cable: Shielded twisted pair, max length 75 ft; separate from power cables by 8 inches
Communication & Control
Communication Interfaces: SERCOS III, EtherCAT, CANopen, analog/pulse (configurable)
Control Modes: Position, speed, torque
Torque Update Rate: 16 kHz
Velocity Loop Update Rate: 4 kHz
Safety Feature: Safe Torque Off (STO) compliant with ISO 13849‑1
Serial Communication: RS‑232/485 for configuration and monitoring
Control Algorithms: Digital current loop, PWM sine wave commutation, adaptive gain, auto‑tuning, back EMF compensation
Physical & Environmental
Enclosure: Compact industrial casing, IP20 protection
Mounting: Vertical with M4 screws
Wiring Gauge: Control logic 16 AWG, motor line 14 AWG, main input 14 AWG
Operating Temperature: +5°C to +45°C (ambient, full rating)
Storage Temperature: -25°C to +70°C
Humidity: 10–90% non‑condensing
Vibration Resistance: 0.5 g
Maximum Altitude: 1000 m (5% derating above 1000 m)
Cooling: Integrated heat sink, conduction cooling
Core Features
High‑Power Compact Design
The CR20560 provides 20A continuous current in a space‑saving package, delivering high power density for medium‑to‑high power applications. Its compact form factor reduces cabinet space and supports efficient multi‑axis machine layouts.
Precision Digital Control
Powered by advanced DSP technology, the drive ensures smooth torque output, precise speed regulation, and accurate positioning. With 16 kHz torque update and 4 kHz velocity loop update, it offers fast dynamic response for high‑accuracy motion tasks.
Universal Feedback Support
Native resolver support delivers reliable, noise‑immune position sensing for harsh environments. Optional encoder interfaces enable high‑resolution positioning, catering to diverse application needs.
Flexible Communication
Multiple industrial Ethernet and fieldbus options (SERCOS III, EtherCAT, CANopen) plus analog/pulse control allow seamless integration with various motion controllers and PLCs, supporting both new and retrofit systems.
Integrated Safety & Protection
STO functionality ensures safe motor torque removal, complying with global safety standards. Multi‑layer protection guards against overvoltage, undervoltage, overcurrent, overtemperature, short circuits, and encoder faults.
Regenerative Braking
Built‑in regenerative braking recaptures energy during deceleration, reducing energy consumption and heat generation, improving cycle efficiency and lowering operational costs.
Industrial Reliability
Designed for continuous operation in demanding conditions, the CR20560 withstands vibration, dust, and temperature fluctuations. Rugged construction and high‑quality components ensure long‑term reliability.
Applications
The CR20560 is ideal for medium‑to‑high power multi‑axis motion control across industries, including packaging and labeling machinery, heavy‑duty automated assembly lines, printing and converting equipment, textile machinery, robotics and material handling, machine tools, and general industrial automation requiring compact, high‑accuracy servo control.
Compatibility
The CR20560 is compatible with Kollmorgen Goldline XT series motors (XT 30, XT 50, XT 70) and other Danaher Motion motors, ensuring seamless integration with Kollmorgen’s motion control ecosystem for new installations and retrofits.
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