Avtron Encoder AV56A
Description
The Avtron AV56A is a modular, two piece incremental encoder (also known as a tachometer or rotary pulse generator). It provides a two phase, A Quad B frequency (pulse) output, with complements. The AV56A mounts on a 4.5" (NEMA 56C) Face.
INSTALLATION
Installation and removal videos for the AV56A/67/85/115 are available on Avtron’s web site. Refer to the back page of these instructions for outline and mounting dimensions. The motor must comply with 1998 NEMA MG 1, section 4, for tolerances on diameters and runout for shafts and accessory faces. Axial float or endplay must be less than ±0.050".
In preparation for installing the Model AV56A encoder, it is first necessary to clean both the accessory motor shaft and the mounting face. These surfaces must be inspected and any paint, burrs, or other surface imperfections removed.
Installation procedures should be performed only by qualified personnel. Safety precautions must be taken to ensure machinery cannot rotate and all sources of power are removed during installation.
ROTOR INSTALLATION
The motor shaft must project at least 0.63" from the motor face. For set screw rotors only: Apply anti-seize compound to the motor shaft. For all rotors: Slide the rotor onto the shaft with the marking “Motor side” facing in, (toward the motor face). The rotor centerline must match the sensor centerline.
LARGE BORE SET SCREW ROTOR REMOVAL
Disengage the (2) set screws by turning them counterclockwise until removed from the rotor. Retain the set screws. Remove the rotor by hand by pulling it away from the motor. If the rotor will not move, do NOT use a gear puller, and do not use a heat gun. Instead, pry the rotor away from the motor gently, being careful to only pry against the rotor metal hub and not the magnetic outer strip.
ENCODER REMOVAL
The AV56A stator housing can be removed by loosening and removing the socket head cap screws.
