Kollmorgen SERVOSTAR 606 N1 Digital Servo Drive
The Kollmorgen SERVOSTAR 606 N1 is a high-performance digital servo drive manufactured by Danaher Motion GmbH, designed for precise motion control of AC synchronous servo motors. Operating directly from 400-480V AC three-phase lines, this drive delivers exceptional dynamic response for demanding industrial applications including CNC machining centers, robotic systems, packaging machinery, and converting equipment. The SERVOSTAR 606 series represents advanced servo drive technology with high-resolution feedback processing and flexible control configurations.
Electrical Specifications
Input Voltage: Three-phase 400-480V AC ±10%, 50/60Hz
Continuous Output Current: 6 A RMS per phase
Peak Output Current: 18 A RMS (2 seconds)
Output Power: 2.5 kW continuous
Switching Frequency: 8 kHz standard, 16 kHz optional
Maximum Closed Loop Velocity Bandwidth: 400 Hz
Current Loop Update Rate: 62.5 µs at 16 kHz
Operating Temperature: 0°C to 40°C
Resolver Feedback System
The SERVOSTAR 606 N1 utilizes resolver-based feedback technology for rotor position and velocity measurement. The resolver-to-digital converter system automatically determines resolution based on application velocity limits, providing up to 16-bit resolution for position feedback. For velocity calculations, the drive extends resolver input to 18-bit resolution, ensuring smooth motor velocity control even at low speeds. This resolver feedback method eliminates the need for fragile optical encoders, providing superior reliability in harsh industrial environments with vibration, moisture, and contamination.
High-Resolution Feedback Capabilities
The drive's resolver processing system offers exceptional accuracy with minimal error contributions. The R/D converter contributes approximately 4 arc-minutes of error, resolver mechanics add 8 arc-minutes, and resolver mounting on the motor shaft adds 2 arc-minutes. The total worst-case system accuracy is approximately 19 arc-minutes, suitable for precision positioning applications. The digital dither over the least significant bit ensures smooth motion without quantization effects.
Control Modes and Performance
The SERVOSTAR 606 N1 supports multiple control modes for versatile motion applications. In torque mode, the drive accepts an analog command to control motor current, ideal for tension control and force applications. Speed mode provides closed-loop velocity control with high bandwidth for spindle drives and conveyor applications. Position mode enables precise point-to-point positioning with step-and-direction or encoder following commands. The drive can switch between control modes dynamically based on digital input states.
Encoder Equivalent Output
One of the key features of the SERVOSTAR 606 N1 is its Encoder Equivalent Output (EEO) function. The drive provides a motor position output in the form of quadrature encoder signals, eliminating the need for an additional position feedback device. The outputs are differential line drivers, providing noise immunity for long cable runs to the motion controller. This feature allows the drive to serve as both a motor controller and a virtual encoder, simplifying system architecture and reducing component count.
I/O and PLC Integration
The SERVOSTAR 606 N1 provides comprehensive I/O for PLC integration: 8 digital inputs (24V DC, optically isolated) for enable, reset, gain select, control mode select, and motion commands; 4 digital outputs (open-collector) for ready, fault, brake control, and position reached; 2 analog inputs (±10V, 12-bit resolution) for torque or speed reference; 2 analog outputs (±10V) for motor current and velocity monitoring. Communication interfaces include RS-232 for configuration and CANopen for network integration.
Protection Functions
The drive includes comprehensive protection for reliable operation in industrial environments: overcurrent protection (peak detection), overvoltage protection (DC bus > 800V), undervoltage detection, motor overload (I²t electronic thermal), drive overtemperature (heatsink > 85°C), resolver loss detection, and motor phase loss detection. A dynamic braking circuit handles regeneration energy, with provision for an external braking resistor for high-inertia applications.
Mechanical and Environmental Specifications
The SERVOSTAR 606 N1 is housed in a compact chassis design optimized for panel mounting. Dimensions are 300mm (H) × 110mm (W) × 210mm (D), with a weight of 4.2 kg. Mounting is via four M5 screws on a vertical panel. Cooling is forced convection via an integrated fan. Enclosure rating is IP20, requiring installation in a protected environment. Humidity range is 5-95% non-condensing. Vibration resistance meets industrial standards for machinery installation.
Motion Control Applications
The SERVOSTAR 606 N1 is widely used in demanding motion control applications. In CNC machinery, it drives axis positioning for milling, turning, and routing operations. In robotics, it controls joint motion with high torque density and fast response. In packaging equipment, it drives rotary cutters, indexing tables, and pick-and-place mechanisms. In printing and converting, it provides synchronized multi-axis control for registration and tension management.
Compatibility with Kollmorgen Motors
The SERVOSTAR 606 N1 is optimized for use with Kollmorgen's AKM and CD series AC synchronous servo motors. These motors feature high torque-to-inertia ratios, enabling rapid acceleration and deceleration. The drive's autotuning function automatically identifies motor parameters, including stator resistance, inductance, and torque constant, ensuring optimal performance without manual configuration. Predefined motor data sets are stored in the drive's memory for common Kollmorgen motor models.
Standards and Compliance
The SERVOSTAR 606 N1 complies with CE marking for European markets, UL 508C for North American industrial control equipment, and cUL certification. It meets RoHS requirements for restriction of hazardous substances. The drive is designed for installation in industrial machinery according to EN 60204-1 safety requirements.
Conclusion
The Kollmorgen SERVOSTAR 606 N1 digital servo drive delivers high-performance motion control with resolver feedback, advanced control algorithms, and flexible I/O for PLC integration. Its robust design and comprehensive protection features make it a reliable choice for demanding industrial automation and motion control systems.
