September 19, 2018
Quantum Devices offers a full range of transmissive incremental encoders. Our rotary encoders are used in industrial and commercial motion control, including medical equipment, industrial automation, and automated guided vehicles (AGV). Our full incremental encoder line card is now available online. This is a helpful resource for comparing the configuration options available...
March 29, 2016
I have been working on a project to automate a manual lathing operation for our incremental encoder/optical encoder line. To keep things simple, thumb switches allow the set point, along with some offsets for fine-tuning, to be entered. I am not completely finished with project, but in the video below...
January 20, 2016
We recently teamed up with one of our Optical Encoder Distributors to create a Demo box that showcased our QD145 encoder with a Delta Tau PLC and touchscreen panel. It was sent off to a trade show where potential customers would get to spin the encoder and watch on the...
January 9, 2016
We only need to measure one of the incremental channels in order to calculate the RPM of an optical encoder. Using an oscilloscope to measure the period of one incremental channel A cycle. We will need to find the frequency of the incremental signal. Keep in mind that converting...
March 18, 2015
Encoder Resolution, RPM & Frequency Calculator We just added an online calculator that provides a way to calculate RPM, Frequency, or line count (optical encoder resolution) by entering in the other two variables. Leave the third field empty (do not enter zero). Use to solve for Frequency, Line Count or...
August 2, 2014
What’s with this Black-White Wire? Quantum devices QR145 and QR200 optical encoders feature an extra black & white striped wire that serves as an alternate grounding connection for the encoder. This wire is intended to be used in situations where the encoder flex mount is not case grounded. The Black/White...
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 Count optical...
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...
April 15, 2014
I set up a QR145 optical encoder on a Direct Logic DL06 PLC with some simple Ladder Logic to determine direction based on the A and B incremental inputs. Below is a video of the optical encoder in action: In the PLC I used (DL06), the inputs are filtered, which...
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