KOLLMORGEN CR06550 High-precision digital servo amplifier
Introduction
The Kollmorgen CR06550 is a high-precision digital servo amplifier from the legacy Servostar CD series (Compact Drive family). Engineered for high-bandwidth control of synchronous and permanent-magnet industrial brushless servo motors, this single-axis drive features exceptional loop response dynamics and robust torque management capabilities.
Equipped with a flexible processing architecture, the CR06550 provides precise speed, acceleration, and position loop execution. Designed with a standard analog interface and versatile feedback capability, it serves as a highly reliable drop-in solution for legacy lines, retrofits, and high-duty production machinery.
Technical Parameter Table
| Parameter | Specification Details |
| Manufacturer | Kollmorgen (Danaher Motion) |
| Model Number | CR06550 (also known as CR06550-000000) |
| Series | Servostar CD Series |
| Input Phase Supply | 1-Phase or 3-Phase Phase Configuration |
| Nominal Input Voltage | 115 VAC to 230 VAC ($\pm 10\%$, 50/60 Hz) |
| Rated Input Current | 10 A (1-Phase) / 7.8 A (3-Phase) |
| Continuous Output Current | 6 Amps per phase ($6\text{ Arms}$) |
| Peak Output Current | 18 Amps maximum peak capacity |
| Power Capacity @ 230VAC | 1.8 kVA (1-Phase) / 2.8 kVA (3-Phase) |
| Overvoltage Threshold | 430 VDC |
| Undervoltage Threshold | 90 VDC |
| System Efficiency | Approximately 95% |
| Chassis Protection Class | IP20 Open Frame Design |
| Net Weight | Approx. 1.88 kg |
Unique Product Description
The Kollmorgen CR06550 stands out in the control market due to its ruggedized analog communication interface coupled with integrated software resolver and sine encoder calibration options. This allows the drive to achieve extremely smooth torque delivery and low harmonic distortion even under changing mechanical resonance states.
Its optimized internal switching circuit minimizes thermal overhead, maintaining an impressive 95% operating efficiency. Housed in a lightweight, compact chassis weighing under 2 kg, the CR06550 easily fits into high-density legacy control cabinets, eliminating the cost and space required for extensive multi-axis layout redesigns.
Product Advantages and Features
Dual-Input Flexibility: Operates reliably on either single-phase or three-phase line inputs (115V/230V), providing versatility across different electrical grids.
Advanced Feedback Interface: Supports high-resolution sine encoders and encoder emulation alongside standard resolver feedback for highly adaptable loop tracking.
Extended Input-Output Layout: Features an expanded I/O interface for comprehensive handshake signals, error fault monitoring, and remote enable control.
High Torque-to-Size Ratio: Delivers up to 18A peak current from a compact, narrow-width frame, saving valuable backpanel real estate.
Long-Term Reliability: Known for industrial-grade durability, with components engineered to run continuously in heavy factory environments.
Application Cases
Metal Forming and Stamping: Manages high-impact feed control and positioning loops on stamping presses and bending machines.
Food Processing Machinery: Controls dynamic conveyor axes, indexing multi-head fillers, and automated slicing systems requiring rapid stop-start profiles.
Hoisting and Gantry Systems: Powers compact vertical lifting modules and Cartesian pick-and-place systems requiring steady holding torque.
Packaging and Cartoning Modules: Provides highly repetitive positioning and synchronization for packaging lines and end-of-line sealing machines.
Related Models
CR03550: A lower-capacity variant in the Servostar CD family, rated at 3 Amps continuous output.
CR06551: A similar 6A framework module featuring altered firmware options or fieldbus setups.
CR06560: An advanced fieldbus variant equipped with digital network communications instead of traditional analog control.
Goldline Series Motors (e.g., MTC506C): High-performance permanent magnet motors regularly paired with the CR06550 drive for optimum torque matching.
Other Models in the Same Series
The Servostar CD series scales across multiple continuous power levels to suit varying motion profiles:
CR03 Series: 3 Amps continuous / 9 Amps peak models (e.g., CR03250. CR03560)
CR06 Series: 6 Amps continuous / 18 Amps peak models (e.g., CR06550. CR06251. CR06703)
CR10 Series: 10 Amps continuous / 30 Amps peak models (e.g., CR10250. CR10660)
CR20 Series: 20 Amps continuous / 40 Amps peak heavy-duty modules (e.g., CR20561)
Installation and Maintenance
Installation Guidelines
Cabinet Protection: The CR06550 has an IP20 protection rating. It must be mounted vertically inside a clean, dry, enclosed industrial electrical cabinet rated for IP54 or better to avoid airborne particle entry.
Thermal Clearances: Allow sufficient clear spacing above and below the amplifier chassis to facilitate proper convection cooling and unrestricted airflow.
Grounding Infrastructure: Ensure a heavy, low-impedance star ground configuration connecting the drive baseplate to the main subpanel to prevent high-frequency electrical noise from d