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KY-040 Modulo Rotary encoder rotativo Development sensore AVR PIC Per Arduino

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SKU105226EVK
Manufacturer: Arduino, Part Type: Encoder
In stock
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SKU105226EVK
Manufacturer: Arduino, Part Type: Encoder
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Description

Features:
Working voltage: 5V
Circle of pulses: 20
Size: 2.5x 1.8 x3cm


By rotating the rotary encoder can be counted in the positive direction and the reverse direction during rotation of the output pulse frequency, unlike rotary potentiometer counter, which species rotation counts are not limited. With the buttons on the rotary encoder can be reset to its initial state, that starts counting from 0.

How it works: incremental encoder is a displacement of the rotary pulse signal is converted to a series of digital rotary sensors. These pulses are used to control angular displacement. In Eltra angular displacement encoder conversion using a photoelectric scanning principle. Reading system of alternating light transmitting window and the window is not consisting of radial indexing plate (code wheel) rotating basis, while being an infrared light source vertical irradiation light to the code disk image onto the receiving on the surface. Receiver is covered with a diffraction grating, which has the same code disk window width. The receiver's job is to feel the rotation of the disc resulting changes, and change the light into corresponding electrical changes. Then the low-level signals up to a higher level, and generates no interference square pulse, which must be processed by electronic circuits. Reading systems typically employ a differential manner, about the same but the phase difference of the two waveforms different by 180°compared to the signal in order to improve the quality and stability of the output signal. Reading is then the difference between the two signals formed on the basis,thus eliminating the interference.


Incremental encoder:
Incremental encoders give two-phase square wave, the phase difference between them 90 °, often referred to as A and B channels. One of the channels and speed-related information is given, at the same time, by sequentially comparing two channel signals, the direction of rotation of the information obtained. There is a special signal called the Z or zero channel, which gives the absolute encoder is zero, this signal is a square wave with the center line of channel A square wave coincide.

Incremental encoder accuracy depends on the mechanical and electrical two factors, these factors are: Raster indexing error, disc eccentricity, bearing eccentric, electronic reading devices and optical errors introduced some imprecision. Determine the encoder resolution is measured in electrical degrees, the encoder determines the accuracy of the encoder pulses generated indexing.

The following electrical degrees with a 360 ° rotation of the shaft to said machine, and rotation of the shaft must be a complete cycle. To know how much electrical equivalent of the mechanical angle of 360 degrees can be calculated with the following formula: Electrical 360 = Machine 360 ​​° / n ° pulses / revolution

Encoder indexing error is the electrical angle of the unit two successive pulse maximum offset to represent. Error exists in any encoder, which is caused by the aforementioned factors. Eltra encoder maximum error is ± 25 electrical degrees (declared in any condition), the equivalent rating offset ± 7%, as the phase difference 90 ° (electrical) of the two-channel maximum deviation ± 35 Electrical Ratings equivalent degree offset ± 10% or so.UVW incremental encoder signals

In addition to the conventional encoder, there are some other electrical output signal with integrated incremental encoder. With UVW signal integrated incremental encoder that instance, it is usually applied to the AC servo motor feedback. These magnetic signals usually appear in the AC servo motor, UVW through the simulation of the magnetic signal is generally of the original function and design. In Eltra encoder, these UVW signals are generated by an optical method, and three square wave form, they are offset from each other 120 °. In order to facilitate starting the motor, the starter motor control needed with the correct signal. The UVW poles in the machine axis rotation pulses repeated many times, since they are directly connected to the motor depends on the number of magnetic poles, and for 6 or more pole motor UVW signal.


Package Included:
100% Brand New
1x KY-040 Rotary Encoder Module

Features

Manufacturer:
Arduino
Part Type:
Encoder

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