Maintenance Essentials for Magnetic Scale, Optical Incremental Encoder, Resolver and Inductive Synchro

1. Magnetic Scale

Composition: magnetic scale, magnetic read head and detection circuitry.

Maintenance tips: do not scratch the magnetic tape; avoid strong impacts on the magnetic scale and read head to prevent magnetic weakening or field disturbance; distinguish excitation and output windings on the read head when wiring.

2. Optical Incremental Encoder

Maintenance tips: protect against vibration and contamination (internal looseness and signal loss); loose connections affect position accuracy, unstable feed motion and may cause servo motor oscillation.

3. Resolver

(1) Output voltage has a fixed function relationship with rotor angular displacement and is used as an angle measurement element.

(2) Maintenance tips:

        Do not interchange stator and rotor connections if resistances differ; replace worn carbon brushes in time.

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4. Inductive Synchro

(1) A high-precision displacement detection element based on electromagnetic induction.

        Composition: rectangular windings on the fixed and sliding scales.

(2) Maintenance tips:

Ensure parallel alignment between fixed and sliding scales during installation;

Avoid damaging the cutting-fluid-resistant coating and insulated foil;

Distinguish SIN and COS windings when wiring the sliding scale.