D634-314C MOOG servo valve in stock

MugeMOOGservo valveIt can be classified in the following ways.

1Classify according to the different ways of engraving holes on the code wheel

（1）Incremental type: It emits a pulse signal every time a unit angle is turned(Some also emit sine and cosine signals, which are then subdivided to produce pulses with higher frequencies)Usually, it isAXiangBXiangZPhase output,AXiangBMutually delayed1/4The pulse output of the cycle can be distinguished from forward and reverse according to the delay relationship, and by takingAXiangBThe rising and falling edges of the phase can be carried out2or4Frequency doubling;ZThe phase is a single cycle pulse, which means one pulse is emitted per cycle.

（2）Value type: It corresponds to a circle, and each reference angle emits a binary value of * corresponding to that angle. Multiple positions can be recorded and measured through external loop devices.

2According to the output type of the signal, it can be divided into voltage output, open collector output, push-pull complementary output, and long line drive output.

3Classified by mechanical installation form of encoder

（1）Axial type: Axial type can be divided into clamping flange type, synchronous flange type, servo installation type, etc.

（2）Shaft sleeve type: Shaft sleeve types can be divided into semi empty, fully empty, and large-diameter types.

4According to the working principle of encoders, they can be divided into photoelectric, magneto electric, and contact brush types.D634-314C MOOG encoder in stock

MugeMOOGservo valveCommon Faults

1、MugeMOOGServo valve itself malfunction: refers to the encoder itselfcomponentsA malfunction has occurred,

Resulting in its inability to generate and output correct waveforms. In this case, it is necessary to replace the encoder or repair its internal components.

2、MugeMOOGServo valve connectioncableFault: The probability of this type of fault occurring The highest priority should be given to factors that are frequently encountered during maintenance. Usually, it is due to open circuit, short circuit or poor contact of the encoder cable, in which case the cable or connector needs to be replaced. Special attention should also be paid to whether it is due tocableIf the fixation is not tight enough, causing looseness and resulting in welding or circuit breakage, the cable needs to be clamped tightly.

3、MugeMOOGencoder+5VPower supply drop: refers to+5VThe power supply is too low, Usually cannot be lower than4.75VThe reason for the low voltage is due to power supply failure or high resistance of the power transmission cable, which causes losses. In this case, the power supply needs to be repaired or the cable needs to be replaced.

4The voltage drop of the encoder battery: This fault usually has a clear alarm meaning, and the battery needs to be replaced. If the reference point position memory is lost, the operation of returning to the reference point must also be performed.

5、MugeMOOGencoder cableshielded wireNot connected or disconnected: This will introduce interference signals, making the waveform unstable and affecting the accuracy of communication. It is necessary to ensure reliable welding and grounding of the shielded wire.

6、MugeMOOGLoose installation of encoder: This fault can affect position control Accuracy can cause excessive positional deviation during stopping and movement, and even generate servo system overload alarm as soon as the machine is turned on. Please pay special attention.

7Grating pollution This will cause a decrease in signal output amplitude, and the oil stains must be gently wiped off with a degreased cotton pad.D634-314C MOOG encoder in stock

working principle

A photoelectric encoder with a central axis, on which there are circular markings for light and dark,

There are photoelectric emitting and receiving devices to read and obtain four sets of sine wave signals combined intoATheBTheCTheD,Each sine wave has a phase difference90Degree phase difference (relative to one)Zhou Bofor360Degree), willCTheDReverse signal, superimposed onATheBOn both sides, it can enhance stable signals; Also output one per revolutionZThe phase pulse represents the zero reference position.

Due toATheBTwo phases are different90Degree, can be comparedAIs it in front of meBTo distinguish the forward and reverse rotation of the encoder, the zero position reference bit of the encoder can be obtained through the zero position pulse. The materials of encoder encoders include glass, metal, and plastic. Glass encoders deposit very thin engraved lines on glass, which has good thermal stability and high accuracy. Metal encoders directly engrave lines with or without lines, which are not fragile. However, due to the thickness of metal, the accuracy is limited, and its thermal stability is one order of magnitude worse than that of glass. Plastic encoders are economical and have low cost, but their accuracy, thermal stability, and lifespan are all inferior.

resolution—Encoder with each rotation360The number of open or closed lines provided by a degree is called resolution, also known as resolution division, or directly referred to as how many lines, usually measured in increments per revolution5~10000Line.

Selection Attention

Three parameters should be noted:

1Mechanical installation dimensions: including positioning stop, shaft diameter, installation hole position;Cable outgoing method;Installation space volume;Whether the protection level of the working environment meets the requirements.

2Resolution: refers to the number of pulses output by the encoder per revolution during operation, and whether it meets the design accuracy requirements.

3Electrical interface: Encoder output methods commonly include push-pull output(FtypeHTLformat)Voltage output(E), open collector(C, CommonCforNPNType tube output,C2forPNPType tube output)Long line driver output. Its output mode should match the interface circuit of its control system.

The above information is my opinion on MugeMOOGA brief introduction to the encoder. If you need to purchase or want to inquire about other brand products and make inquiries for procurement, you can visit me at our company's booth. I will be happy to serve you!D634-314C MOOG encoder in stock