Kollmorgen’s new SFD-M (Smart Feedback Device, Multi-Turn) provides machine builders with high-resolution multi-turn feedback and absolute positioning information at system startup.
Cost-Effective and Integrated
The SFD-M absolute multi-turn encoder integrates into Kollmorgen housed servo motors at no additional charge compared to the SFD-3 single-turn absolute encoder, and it works with AKDTM and AKD2G drives. This integration provides significant savings compared to premium-priced third-party encoders.
Enhanced Performance
The SFD-M delivers multi-turn performance, four times greater positioning accuracy, and fifty times lower EMF noise.
Absolute Multi-Turn Positioning
The SFD-M measures the rotor shaft’s position throughout each 360º rotation without requiring a home position reference. It also registers the total number of rotations the shaft has made in either direction. Absolute multi-turn positioning is ideal for applications that require precise position tracking over large rotational distances. The SFD-M maintains absolute positioning information in real time, even when the system is powered down, eliminating time-consuming homing sequences upon startup.
Energy-Harvesting Technology
The SFD-M utilizes energy-harvesting technology to maintain positioning information reliably without batteries or gear trains, eliminating maintenance issues and promoting sustainability.
Exceptional Performance and Value
The SFD-M’s high accuracy is evident in its key specifications: 24 bits per revolution (16,777,216 counts per revolution), 16-bit multi-turn absolute range (65,536 motor revolutions), and accuracy of < +/– 1 arc-min typical at 25ºC and < +/– 3 arc-min worst case.
Key Benefits
- High resolution and accuracy
- Absolute multi-turn positioning
- No additional cost over single-turn encoders
- Energy-harvesting technology (no batteries required)
- Reduced maintenance
- Single motor-to-drive cable technology with auto drive setup lowers total costs
Overall, Kollmorgen’s SFD-M encoder offers exceptional performance, cost savings, and enhanced functionality, making it a valuable addition to their industry-leading servo systems.
