Overview / Design Principle:
A size 21 servo ring allows easy mounting and replacement of pancake resolvers with high tolerance to motor shaft movement and 360 degrees of adjustment to align the signal outputs to the shaft position.

A superior optical configuration allows for generous internal component clearance eliminating potential damage at high ambient operating temperatures. High temperature rated grease is standard for extended bearing life.

The use of optically-generated signals for Brushless DC (BLDC) servo control provides higher accuracy and reliability by eliminating the hysteresis found in competitive units with hall-effect sensors, ensuring maximum performance and reliability of the servo system. Compared to most resolvers with accuracy of ±10 arc-min, the F21 enables superior shaft positioning with accuracy to ±2.5 arc-min.

Features and Benefits:

• The F21 design operates up to 120°C. The high temperature materials, innovative sensor technology, and low current requirements stabilize the output signals over a wide range of ambient temperature and output frequencies.
  
  
• The F21 mounting configuration allows for direct pancake resolver replacement featuring a jamb nut and tethered servo ring

Applications:
The Dynapar brand Series F21 encoder provides high performance, cost effective feedback for stepper and servo motor applications. The F21 offers compact package dimensions and flying leads for a low-profile installation.