Kollmorgen SFD-M Absolute Multiturn Feedback
Kollmorgen SFD-M Absolute Multiturn Feedback
SFD-M is Kollmorgen’s battery-free absolute multiturn motor feedback technology for supported servo systems. It combines high singleturn resolution with retained turn information using energy harvesting. Treat it as a motor/drive feedback configuration rather than a universal external encoder that fits every motor.
Review Summary
Useful when retained motor position reduces startup work or battery maintenance. Check the supported motor, drive and firmware arrangement, then define how motor position maps to the machine coordinate system. Resolution and accuracy are different specifications.
Singleturn resolution 24 bits; 16,777,216 counts/revolution Multiturn range 16 bits; 65,536 motor revolutions in source specification Angular subdivision Approximately 0.0772 arc-sec per count Accuracy scope Source: better than ±1 arc-min typical at 25 °C; ±3 arc-min worst case Retention Energy harvesting; no backup battery or mechanical multiturn gear train Integration Supported Kollmorgen housed motors and AKD / AKD2G configurations Price Obtain exact motor/feedback configuration quote; no standalone universal price Applications and Industries
Supported servo axes needing retained motor-turn information and an explicitly engineered machine-reference strategy.
Industrial automation
Request a quote for the exact configuration,quantity and delivery schedule.
| Singleturn resolution | 24 bits; 16,777,216 counts/revolution |
| Multiturn range | 16 bits; 65,536 motor revolutions in source specification |
| Angular subdivision | Approximately 0.0772 arc-sec per count |
| Accuracy scope | Source: better than ±1 arc-min typical at 25 °C; ±3 arc-min worst case |
| Retention | Energy harvesting; no backup battery or mechanical multiturn gear train |
| Integration | Supported Kollmorgen housed motors and AKD / AKD2G configurations |
| Price | Obtain exact motor/feedback configuration quote; no standalone universal price |
