Independent Technology Service Inc.

When working with CNC machines, understanding the difference between resolvers and encoders, as well as knowing what to buy for your specific setup, is critical. Both resolvers and encoders serve the purpose of providing position and velocity feedback for servo motors, but the way they achieve this is vastly different. This distinction plays a key role when deciding on replacement parts or testing whether a device is functioning properly. Fadal Resolvers: Analog Feedback for Servo Motors Fadal Resolvers are analog devices that you will find on all Fadal DC servo motors. They provide feedback based on the motor's rotation using magnetism. Specifically, as the shaft rotates, the rotor interacts with the armature, generating three sinusoidal waveforms, each out of phase with the other by a specific number of degrees. These waveforms help determine the motor’s rotational speed and position. In CNC machines, the Fadal resolver feedback is processed by controller cards located in slots 9...

In the realm of CNC machining, precision and accuracy are paramount. Two critical components that significantly impact these factors are Fadal resolvers and Fadal encoders. Both play essential roles in position feedback systems, yet they operate differently and offer distinct advantages. Here, we delve into the differences between Fadal resolvers and encoders in CNC machines. Understanding Fadal Resolvers Fadal Resolvers are analog devices used to measure the angular position of a CNC machine's components. They operate on the principle of electromagnetic induction, where a rotor induces a signal in the stator coils. This signal is then converted into a precise angular position. Advantages of Fadal Resolvers Robustness: CNC Resolvers are highly durable and can withstand extreme environmental conditions, including high temperatures and vibrations. Reliability: Due to their simple construction, CNC resolvers have fewer points of failure, making them more reliable in harsh industrial...