The latest introduction of Eltra encoder

Frequently Asked Questions of Eltra Encoder:

1. The encoder should not be rigidly connected with the user's output shaft during installation; it should be ensured that the difference between the encoder and the user's output shaft is less than 0.20mm, and the deflection angle to the axis is less than 1.5°; when selecting Consider the allowable shaft load of the encoder; it is strictly forbidden to knock the encoder during installation.

　　 2. Encoders that are not leak-proof structures should not be splashed with liquid substances such as water, oil, etc. If there are special requirements for the protection level of the encoder, it needs to be clearly stated when ordering.

　　3. When selecting an encoder, pay attention to the matching of the electrical output circuit of the encoder with the receiving circuit of the system. If you are not sure, please contact our technical support in time.

4. The output wires of the encoder should not overlap each other; the output wires of the encoder should not be connected to a DC power supply or an AC power supply; pay attention to the power supply voltage of the encoder and not exceed the specified power supply voltage; try to avoid the power line and the ground Pick up.

　　 5. Avoid using in a strong electromagnetic wave environment, and use shielded cables when wiring; shielded cables should use the whole cable as much as possible instead of several connections.

　　6. ​​How do customers use the field to test the encoder signal?

　　(1) You can use the oscilloscope to test, the encoder is normally powered, and the oscilloscope probe is used to test the signal end when rotating. A and B are a series of pulse signals, and the zero position is one pulse per revolution. If the test fails, the encoder is faulty.

(2) You can use a multimeter to test, the encoder is normally powered, use the multimeter (dial to the DC voltage file) when rotating, test the signal terminals (A, B) with the red test lead, and test the encoder 0V with the black test lead, see A and B terminals Whether the signal has a voltage jump, pay attention: the signal amplitude jumps close to the power supply voltage, that is, it is normal, otherwise, the encoder is faulty.

　　7. The encoder signal output cable should not be transmitted coaxially with the strong current cable as much as possible to avoid the signal waveform distortion caused by the interference of the electromagnetic field and the counting error.

　　 8. If the encoder uses glass grating, the user must strictly follow the installation instructions when installing the encoder, and avoid falling and collision.

　　From the perspective of technical performance, the future development of encoders will be more inclined to the direction of high-precision, integration, miniaturization, non-contact and networked data transmission. At the same time, due to the harsh working environment in industries such as metallurgy, port machinery, textile machinery, and wind power generation, encoders also need to improve their own protection capabilities and increase durability. From a market perspective, different markets have different requirements for encoders. For example, some require encoders with higher accuracy, some require encoders with stronger protection performance, and some require encoders with Very good integration and openness, and some have smaller requirements for the size of the encoder, which requires that the types of encoder products on the market be richer, the market segmentation is more clear, and it is suitable for customers of various types of needs.

From the perspective of practical application, the encoder also needs to strengthen the ability to improve the electromagnetic protection level, improve its own protection level, and make the full range of products adapt to harsh outdoor industrial control sites, such as water conservancy, metallurgy, electrical machinery, wind power, and ports. Machinery, packaging machinery, CNC machine tools, elevator manufacturing and textile machinery industries.

　　 Looking at the development characteristics of industrial automation, communication and networking have become irreversible trends, which have created more possibilities for the expansion of the application range of sensors and other automation products. With the development of optoelectronic technology, encoder products are developing in the direction of high-precision, small size, non-contact and networked data transmission. In the future development, encoders will experience more mature products and the development of more technology grafting. process.

　　Eltra encoder is an important branch of sensor products, which compiles and converts signals or data into devices that can be used for communication, transmission and storage. The most important application of the encoder is positioning, and it has been more and more widely used in various industrial control occasions.

　　 Yierchuang Eltra encoder use common sense:

　　 1. Mechanical aspects:

　　 The connection between the encoder and the user's output shaft should be flexible and flexible. Rigid connection should not be used to avoid damage to the encoder shaft system and code disc due to the string movement and beating of the user shaft.

　　 When installing the encoder, gently push into the quilt shaft. It is strictly forbidden to hit and hit with a hammer to avoid damage to the shaft system and the code disc. Please pay attention to the allowable shaft load during installation, and it must not exceed its limit load.

　　 It should be ensured that the different speed between the encoder shaft and the user's output shaft is less than 0.2mm, and the deflection angle to the axis is less than 2°. Be careful not to exceed the electrical limit speed. If the limit speed allowed by the encoder is exceeded, the electrical signal may be lost.

　　Nmax = (highest response frequency/L)×60 r/min (L is the number of grating pulses).

　　 2. Common sense of encoder use:

　　 During long-term use, please check whether the parts connected to the encoder and the fixing screws are loose, so as not to affect the normal use of the equipment.

　　3. Electrical aspect:

　　 Please do not wind the output line of the encoder with the power line, etc. or transmit it in the same pipe, nor use it near the switchboard to prevent interference. Use shielded cables when wiring.

　　 Before installing and starting up, check carefully whether the product manual matches the encoder model and whether the wiring is correct. Incorrect wiring will damage the internal circuit.

　　 For long-distance transmission, signal attenuation factors should be considered, and an output mode with low output impedance and strong anti-interference ability should be selected.

　　 The transmission distance of the pulse signal is related to the following factors: frequency, output circuit, input circuit, transmission line, transmission frequency.