SPECIFICATIONS

A rotary encoder can count the number of pulses output during the forward and reverse rotation processes. Unlike potentiometers, rotary counting has no limit. By using the buttons on the rotary encoder, it can be reset to the initial state, starting counting from 0.

Incremental encoder is a rotary sensor that converts rotational displacement into a series of digital pulse signals. These pulses are used to control angular displacement. The conversion of angular displacement in Eltra encoder adopts the principle of photoelectric scanning. The reading system is based on the rotation of a radial indexing disk (code disk) composed of alternating transparent and opaque windows, while being vertically illuminated by an infrared light source, which projects the image of the code disk onto the surface of the receiver. The receiver is covered with a layer of diffraction grating, which has the same window width as the encoder. The job of the receiver is to sense the changes caused by the rotation of the optical disc, and then convert the light changes into corresponding electrical changes. To raise the low-level signal to a higher level and generate square pulses without any interference, electronic circuits must be used for processing. Reading systems usually use differential methods, which compare two different signals with the same waveform but a phase difference of 180 °, in order to improve the quality and stability of the output signal. The reading is formed based on the difference between two signals, thereby eliminating interference.

Pinouts

5V: Positive pole of power supply

GND: Negative pole of power supply

S1: Signal output 1

S2: Signal output 2

KEY: Key

Product parameters

Working voltage: 5V

Number of pulses per cycle: 20

Resistance adjustment method: rotary type

Size: 24mm diameter

Application

Suitable for car audio systems

Automotive air conditioning

Car navigation and others

Household Electric Appliances

Description:

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.

EC11 rotary encoder is widely used in car DVD, car guide, car audio and video is often called car encoder. The encoder is mainly used for parameter control in frequency adjustment, height adjustment, temperature adjustment and volume adjustment. Note that the encoder should not be stored in a place with high temperature, humidity and corrosion. Please keep the remaining products that have not been used up after unpacking in a moisture- and gas-proof environment.

Product parameters:

1. Rated voltage: DC 5V

2. AB phase of each phase wire: 0.5mA (Max 5mA, Min 0.5mA)

3. Common wire C: 1mA (Max 1 0mA, Min 0.5mA)

4. Operating temperature range: -30 ° C ~ + 80 ° C