September 2, 2020
Quantum Devices, Inc. develops QR145 Optical Rotary Encoder that stands up to harsher environments at advantageous OEM volume prices. Quantum’s QR145 Optical Rotary Encoder/IP66 option is a fully enclosed encoder that overcomes cost and performance limitations of other fully enclosed encoders, whether of magnetic or traditional mechanical design. This new...
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...
April 18, 2016
As the resolution of optical encoders increases, the distance from sensor to disk decreases. In the incremental encoder industry, this distance is called the “Air Gap”. In the side view photo of an optical encoder above, the two red lines indicate the air gap between the sensor and disk in...
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...
March 16, 2016
The QR145, QR200 and QR12 series of optical encoders have 28 AWG conductors in the standard flying lead cable. This gauge of cable is excellent for tight bends and fitting in applications where space is a premium. The conductors can easily handle the 250 mA max current requirement of the...
March 2, 2016
When using an incremental rotary encoder, you often have to know how many pulses there are per degree of rotation. This is a very straightforward math problem. Pulses per Degree = Number of encoder pulses per rotation/Number of degrees in a circle For a 5,000 line count incremental encoder we...
February 9, 2016
I recently received an e-mail asking for some help picking the right resolution for an optical incremental encoder. I have removed the personal information and the drive/controller information, otherwise the e-mail is verbatim: Hi, I am using a motor controller in dual loop velocity mode. What resolution incremental encoder would...
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...
March 26, 2014
While most of us are familiar with how to measure something in mechanical degrees, incremental encoder signals are measured in electrical degrees. 360 electrical degrees is the period in which a signal completes one high to low transition. This can be in any sort of waveform, but for encoders electrical...
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