Hengstler AC58 Series 0566003 Absolute Rotary Encoder - Optical, Binary Output, Horizontal, IP64

An absolute encoder provides a unique digital code for each shaft position, retaining this position data even after a power loss, eliminating the need for a homing routine. An incremental encoder only outputs pulses relative to movement. The Hengstler 0566003 is an absolute encoder, making it ideal for applications where knowing the exact position on startup is critical, such as in CNC machines or robotic arms, ensuring system integrity and reducing cycle time.

The binary code output consists of multiple parallel digital lines (the exact bit count is model-dependent within the AC58 series). Each line corresponds to a bit in the binary word representing the shaft's absolute position. You must connect these lines, along with power (10-30 VDC) and ground, directly to a digital input module on a PLC, motion controller, or industrial PC capable of reading parallel digital inputs to decode the position value.

With an IP64 rating, this encoder is protected against dust ingress and water splashes from any direction. It is suitable for most industrial indoor environments, including those with occasional condensation or light spray. However, IP64 is not rated for immersion or high-pressure water jets, so it should not be used in full washdown or submerged outdoor applications without additional protective housing.

The horizontal orientation and flange mount design require the encoder body to be fixed perpendicular to the rotating shaft. Ensure the mounting surface is flat and rigid to prevent misalignment, which can cause bearing wear and signal errors. The 19.5mm shaft must be coupled securely to the drive shaft using a flexible coupling to accommodate minor radial and axial misalignments, preserving encoder lifespan and accuracy.