MA704GQ-P

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Part Status:	Active

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Encoders: MA704GQ-P Application Field and Working Principle

Encoders are widely used in motors and mechanical systems for obtaining the position and speed of moving objects. This article will explore how the MA704GQ-P encoder fits within this field of technology, and describe its working principle.Encoder technology is based on the straightforward concept of converting motion into an electrical signal. This process is achieved by translating in-motion information into a digital signal that can then be transmitted and used by other systems. To achieve this conversion of mechanical motion into digital signals, two primary technologies have been developed, incremental encoders and absolute encoders.Incremental encoders rely on pulses generated by photo-detectors and electromechanical sensors that can detect motion as objects move relative to the encoder. The incremental encoder’s output is expressed in terms of a frequency whose rate is proportional to the speed of the object.Absolute encoders, on the other hand, employ absolute positioning technology which uses Gray code, which is a system of binary coding. The output of an absolute encoder is an absolute position and a unique pattern code which represents the exact position of the object being measured.The MA704GQ-P encoder belongs to the type of encoders known as incremental encoders, and is primarily used for detecting rotary speed and position. It is a multi-turn application, wherein the encoder contains a special pulse disc and rotary encoder that allow it to detect multiple rotations of the device being measured. This pulse disc stores digital data up to 4096 revolutions, which allows for a resolution of 6400 steps per revolution. The encoder also features a broad voltage range from 4.5VDC to 16VDC, a digital push-pull signal output function, and various PNP / NPN output types.The most essential part of the MA704GQ-P encoder’s working mechanism is the combination of two parts: the rotary encoder and the pulse disc. Firstly, the rotary encoder is able to detect the rotation of the device and then convert it into a digital signal using its various components, such as photoelectric sensors, LED emitters, and receivers. Then, the pulse disc contains an array of evenly-spaced rectangular holes, which enable the rotary encoder’s sensors to detect multiple rotations of the device being measured, thus producing a value that is proportional to the speed or position of the rotation.Although the MA704GQ-P encoder is particularly suited to multi-turn applications, the device can be used in single-turn applications as well. This is possible because the encoder has the capability to start counting from any position without exceeding its maximum resolution.To summarise, the MA704GQ-P encoder is an incremental encoder that is used primarily for detecting rotary speed and position. It utilizes a rotary encoder and a pulse disc to detect multiple rotations of the device being measured and convert the measured value into a digital signal. This digital signal can then be transmitted and used by other systems for high efficiency performance.

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