Optical Encoder Waveform Triggering

July 28, 2014

. Seeing Encoder Quadrature with a two-channel scope . I received an e-mail from a customer concerned about the  “out of control” optical encoder signals he was seeing on his Oscilloscope. The photo below shows the type of signal he was seeing: The encoder in question was a 10,000 Line...

Inverted Flex Mount for QD145 Optical Encoder

July 19, 2014

O. .Another way to mount an Optical Encoder Instead of using an end bell,  a lot of our motor manufacturer customers recess the QD145 optical encoder into an extended motor housing and then seal the motor with an end plate. This has the advantage of being a lower cost item...

Understanding Incremental Encoder Signals

June 29, 2014

Which Encoder Wires Should I Use to Begin Understanding Incremental Encoder Signals? Channels A & B (Incremental Channels) Use only A (or only B) for an RPM or counting applications where the rotation is either unidirectional, or where you don’t need to know direction. Use A and B together to...

Gray Code for Rotary Incremental Encoders

June 17, 2014

Gray code was named for Frank Gray, a Bell labs researcher, who patented the procession in 1953,  even though a form of it was used by Emile Baudot for telegraphy as early as 1878. The most important thing to understand about Gray code is that only one bit changes from...

Interfacing a 5Volt Incremental Encoder to 12 Volts

June 4, 2014

. Interfacing to an Incremental Encoder using an optoisolator When I chose the PLC that I wanted to build incremental encoder applications around, The DL06 seemed like a perfect low cost option, but what I failed to notice was that it had a minimum 12V input requirement to turn on...

Build an Incremental Encoder Quick Tester

May 6, 2014

How to build a portable incremental encoder tester. Every once in while it’s nice to have a hand-held device that can be used to see quickly if encoder signals are present.  I designed and built a quick-tester that allows for fast interface to an encoder without having to drag out...

Using an Optical Encoder to show RPM on a PLC

April 27, 2014

. I have interfaced a 200 line count QR145 optical encoder to a DL06 PLC.  The PLC’s inputs are set up in high speed mode to receive the incremental quadrature pulses coming from the optical encoder. . CT174, the designated high speed up/down counter is used to interface to the...

Using an optical encoder to measure angles

April 23, 2014

I have interfaced a 200 LC QR145 to a DL06 PLC to show how to convert from a line count to mechanical degrees. This type of conversion may be useful for any application needing to know an angular measurement. To calculate a degree measurement we divide 360 by the line...

Optical Encoder Pulse Counting with a PLC

April 19, 2014

I have interfaced a QR145 200 Line Count Optical Encoder to a DL06 PLC and set up the PLC for mode 20 ‘High speed Up/Down counter’. Here is a video of Optical Encoder Counting: Below is the ladder logic code for programming the PLC to count pulses from the QR145...

Log In

Forgot Password?

Create an account

Create an account to gain access to all of our 3D models!

Create Account

Create an account to gain access to all of our 3D models!

Forgot Password