Eltra encoder EH80C2048Z8/24L14X3MR454

Brand

ELTRA/Italy

Origin Category

Imported

Application Fields

Chemical, Petroleum, Road/Rail/Marine, Electrical, General

Eltra encoders from Italy are devices that encode signals (such as bitstreams) or data, converting them into a signal form that can be used for communication, transmission, and storage. Encoders convert angular or linear displacement into electrical signals; the former is called a code disk, and the latter a code scale. According to the readout method, encoders can be divided into contact and non-contact types; according to their working principle, encoders can be divided into incremental and absolute types. Incremental encoders convert displacement into periodic electrical signals, and then convert these electrical signals into counting pulses, using the number of pulses to represent the magnitude of the displacement. Each position of an absolute encoder corresponds to a specific digital code; therefore, its reading depends only on the starting and ending positions of the measurement, and is independent of the intermediate process.

The Italian Eltra encoder is then subdivided and chopped to produce higher frequency pulses. It typically outputs in phases A, B, and Z. Phases A and B are pulses delayed by 1/4 cycle, allowing for differentiation between forward and reverse rotation based on the delay. Furthermore, the rising and falling edges of phases A and B can be used for 2x or 4x frequency multiplication. Phase Z is a single-turn pulse, meaning one pulse is emitted per revolution.

(2) Absolute value type: For each revolution, a binary value corresponding to each reference angle is emitted. Multiple positions can be recorded and measured using an external clocking device.

2. Classified by signal output type: voltage output, open collector output, push-pull complementary output, and long-line drive output.

3. Classified by encoder mechanical mounting method:

(1) Shaft type: Shaft type can be further divided into clamping flange type, synchronous flange type, and servo mounting type, etc.

(2) Bushing type: Bushing type can be further divided into semi-hollow type, fully hollow type, and large-diameter type, etc. 4. Encoders can be classified according to their working principle into: photoelectric, magnetoelectric, and contact brush types.

Common faults of Italian Eltra encoders:

1. Encoder itself malfunction: This refers to a fault in the encoder's components,

causing it to fail to generate and output the correct waveform. In this case, the encoder needs to be replaced or its internal components repaired.

2. Encoder connection cable malfunction: This is the most common fault and should be the first consideration during repairs. It is usually caused by an open circuit, short circuit, or poor contact in the encoder cable. In this case, the cable or connector needs to be replaced. Special attention should also be paid to whether the cable is loosely secured, causing a break in the solder joint or an open circuit; in this case, the cable needs to be tightened.

3. Encoder +5V power supply drop: This refers to a +5V power supply that is too low. It should generally not be lower than 4.75V. The cause of a low voltage is a power supply malfunction or excessive resistance in the power transmission cable, leading to power loss. In this case, the power supply needs to be repaired or the cable replaced.

4. Absolute encoder battery voltage drop: This fault usually has a clear alarm message.

The battery needs to be replaced. If the reference point position memory is lost, a re-reference point operation must be performed.

5. Encoder cable shielding wire not connected or detached: This introduces interference signals, causing waveform instability and affecting communication accuracy. Reliable soldering and grounding of the shielding wire are essential.

6. Loose encoder installation: This fault affects position control accuracy, causing excessive position deviation during stopping and movement, and may even trigger a servo system overload alarm immediately upon power-on. Please pay special attention.

7. Grating contamination: This will reduce the signal output amplitude. Oil stains must be gently wiped away with a cotton ball soaked in grease.

Installation and Use of Italian Eltra Encoders:

High-Speed ​​Installation: Installed on the shaft end of the power motor (or gear connection). The advantage of this method is high resolution. Since multi-turn encoders have 4096 turns, the motor's rotation count falls within this range, fully utilizing the range to improve resolution. The disadvantage is that there is gear backlash error during the return stroke after the moving object passes through the reduction gear. It is generally used for unidirectional high-precision control and positioning, such as roll gap control in steel rolling. Additionally, when the encoder is directly installed at the high-speed end, motor vibration must be minimal, otherwise the encoder may be damaged.

Low-Speed ​​Installation: Installed after the reduction gear, such as on the shaft end of a hoisting wire rope drum or the last reduction gear shaft. This method eliminates gear backlash, providing more direct measurement and higher accuracy. This method is generally used for long-distance positioning, such as various lifting equipment and feeding trolley positioning.

Auxiliary Mechanical Installation of Italian Eltra Encoders:

Commonly used are gear and rack systems, chain belt systems, friction pulleys, and rope winding machines.

Working Principle (Folded Edit Section)

The encoder consists of a centrally located photoelectric code disk with circular, alternating light and dark markings.

Photoelectric transmitters and receivers read these markings, obtaining four sets of sinusoidal signals, A, B, C, and D. Each sinusoidal wave is 90 degrees out of phase (360 degrees per cycle). The C and D signals are inverted and superimposed on the A and B phases to enhance signal stability. Additionally, a Z-phase pulse is output per revolution to represent the zero-position reference.

Since the A and B phases are 90 degrees out of phase, the encoder's forward and reverse rotation can be determined by comparing whether phase A or phase B leads. The zero-position reference position of the encoder can be obtained through the zero-position pulse. Encoder code disks are made of glass, metal, or plastic. Glass code disks have very thin etched lines deposited on glass, offering good thermal stability and high precision. Metal code disks have direct etched lines (both through and through), making them less fragile, but their precision is limited due to the thickness of the metal, and their thermal stability is an order of magnitude lower than glass. Plastic code disks are economical, with low cost, but their precision, thermal stability, and lifespan are all inferior.

Resolution – The encoder's resolution is defined by the number of through or through etched lines provided per 360 degrees of rotation, also known as resolution scale or simply the number of lines. It typically ranges from 5 to 10,000 lines per revolution.

Main Functions

It is a rotary sensor that converts rotary displacement into a series of digital pulse signals.

These pulses can be used to control angular displacement. If the encoder is combined with a rack and pinion or a lead screw, it can also be used to measure linear displacement.

The electrical signals generated by Italian Eltra encoders are processed by CNC (Computer Numerical Control) systems, programmable logic controllers (PLCs), and control systems. These sensors are mainly used in the following areas: machine tools, material processing, motor feedback systems, and measurement and control equipment. In the ELTRA encoder, angular displacement conversion utilizes the photoelectric scanning principle. The reading system is based on the rotation of a radial indexing disc, which consists of alternating transparent and opaque windows. The entire system is illuminated vertically by an infrared light source, projecting the image on the disc onto the surface of a receiver covered with a grating called a collimator, which has the same window as the optical disc. The receiver's function is to sense the light changes caused by the disc's rotation and then convert these light changes into corresponding electrical changes. Generally, the rotary encoder also provides a speed signal, which is fed back to the frequency converter to adjust its output data. Fault symptoms: 1. When the rotary encoder is faulty (no output), the frequency converter cannot function properly, running very slowly, and after a while, the frequency converter will activate protection, displaying "PG disconnected"... Only a combined action can function. To raise the electrical signal to a higher level and generate a square wave pulse without any interference, electronic circuitry is required. The wiring and parameters of the encoder PG (Programmable Grid) between the vector inverter and the encoder PG must correspond to the encoder PG model. Generally, encoder PG models are divided into three types: differential output, open collector output, and push-pull output. The signal transmission method must take into account the interface of the inverter PG card; therefore, selecting the appropriate PG card model or setting it correctly is crucial.

Currently, encoder manufacturers produce a wide range of series, generally dedicated to specific applications, such as elevator encoders, machine tool encoders, and servo motor encoders. These encoders are often intelligent, with various parallel interfaces for communication with other devices.

The Italian Eltra encoder is a device that converts angular or linear displacement into electrical signals. The former is called a code disk, and the latter a code scale. According to the readout method, encoders can be divided into contact and non-contact types. Contact encoders use brushes for output; a brush contacts a conductive or insulating area to indicate whether the code state is "1" or "0". Non-contact encoders use photosensitive or magnetic sensitive elements. When using photosensitive elements, the light-transmitting and opaque areas indicate whether the code state is "1" or "0". Italian Eltra Encoders

EH38A100S8/24P6X3PR.558

EH38A500S8/24P6X3PR

EH38F1024Z5/28P8X3PR.8000

EH40A1000Z5/28P6X3PR

EH40A1000Z5/28P6X6PR.2

EH40A400SB/24P6X3VA

EH40A800Z5L6X3PR5

EH53A1000S8/24P8X6PR2

EH53A1000S8/24P8X6PR2+V

EH58B256Z8/24L6X6PR

EH58C1000S5/28P6X3JR

EH63D100Z5/28L8X3JR.L

EH63D500S8/24P8X3JRL

EH63G300S8/24C15X3PR.571

EH80C100S8/24P15X3MR

EH80C100S8/24P15X3MR

EH80C2000S5 L8XPR+V658

EH80C2000S5L8X3PR+V.658

EH80C200S8/24P8X 3PR

EH80C2048Z5/28L14X3MR

EH80C2048Z5/28-L14X3MR 197+2-95 EH80C2048Z5/28L14X3MR.197+295

EH80C2048Z5/28L14X3MR.197+454

EH80c2048z5/28-L14X3MR+2-95 with aviation connector

EH80C2048Z5/28-L14X3MR197+4-54 with aviation connector

EH80C2048Z8/24L14X3MR454

EH80C250S8/24P 8X3PR.V658

EH80C250S8/24P 8X3PR+V658

EH80C256S8/24P-A10X6PR.898

EH80K1024S8/24L 10X3PR0.7.691

EH80K1024S8/24P10X3PR

EH80K1024S8/24P10X6PR0.7.037+691

EH80K1024S8/24P10X6PR0.7.691

EH80K1024S8/24P10X6PR7.037+691

EH80P1024S4/24L14X3MR

EH80P1024S5L14x3PR.4

EH80P1024S8/24L15X3PR

EH80P1024Z5L10X3PR

EH80P1024Z8/24L10X3PR.269 EH80P1024Z8/24L14X3MR

EH80P1024Z8/24L15X3PR.037

Our company mainly deals in European and American brands and can source brands from any European country. For example, our advantageous German brands include: BURKERT, DEMAG, HAWE, REXROTH, HYDAC, PILZ relays, FESTO, IFM sensors, E+H, HEIDENHAIN, P+F sensors, SICK, TURCK, and HIRSCHMANN industrial switches. German brands: Hengstler, Murr, Schmersal, Samson, EPRO (Emerson Group)

American brands: MOOG, ASCO, MAC, NUMATICS, PARKER, VICKERS, ROSS

British brands: Norgren

Italian brands: OMAL, ATOS, CAMOZZI, UNIVER, Camozzi