Optical Encoders | LI Series

The LI Series encoders are high-resolution, non-contact miniature linear encoders that provide two counting channels in quadrature (called A and B) as output signals.

The two output waveforms are 90 degrees out of phase and indicate both position and direction of movement. For example, if channel A is in front of channel B, the movement is from left to right on the scale when looking at the pattern side of the scale. Otherwise, if B is in front of A, the movement is in the opposite direction. 

Features

• Light source: Light emitting diode
• Light sensor: AEDR Optical Asic
• Resolution by quadrature
• Output format: Differential RS422 line driver output. Two counting channels A and B in quadrature with an optional ZR output
• Quadrature specification: 90° ±22° at maximum conditions
• Rise and fall time: max. 1µs at 1000 pF load

Please note: The encoders are not available as single components but only in combination with a drive.