AS38-H39E-B13S

Series:	--
Part Status:	Active
Encoder Type:	Optical
Output Type:	Binary (Absolute)
Pulses per Revolution:	--
Voltage - Supply:	5V
Actuator Type:	Hole for Shaft
Detent:	No
Built in Switch:	No
Mounting Type:	Chassis Mount, Motors
Orientation:	--
Termination Style:	Wire Leads
Rotational Life (Cycles Min):	--

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Overview of Encoders

Encoders are devices used to measure the angular position of a rotating shaft, in either electrical or mechanical terms. They are classified according to the type of output they provide, which can be digital or analog. Digital outputs are usually pulse-width modulated (PWM) signals, while analog outputs can take the form of voltage, current, or various combined waveforms.

AS38-H39E-B13S

AS38-H39E-B13S is a type of optical encoder which measures the absolute angle of the shaft. The output of the encoder is a series of three square wave signals (A, B, and Z). These signals are used to define the exact position of the shaft at any point in its rotation. The encoder is also available with a differential Quadrature (Quad) output which combines two signals.

Application Field

The AS38-H39E-B13S is commonly used in applications such as servo-motors, robotics, machine tooling, motion controls, and programming languages. It can be used to measure the rotational speed, acceleration, and position of the shaft, as well as the direction of rotation.

Working Principle

AS38-H39E-B13S is an absolute angle encoder, meaning that it does not have to repeat the same conditions to generate valid output. The device consists of two components: a disk-type code wheel and an optical detector. The disk-type code wheel has two rings of transparent marks that allow light to pass through in specific points. The optical detector consists of a photocell in the middle of a circuit that is sensitive to the presence of the markings on the code wheel. When illuminated by the passing marks, the light activates the photocell and the voltage output of the detector is amplified and processed by an external circuit to produce the three square wave signals. The output signals are used to define the exact angle of the shaft, relative to a reference starting point. The signals also determine the direction of rotation. The first (A) and second (B) signals are related to the direction, while the third (Z) signal is used to provide an indication when the exact position is reached.

Conclusion

The AS38-H39E-B13S is a type of optical encoder that can be used to measure the angular position of a rotating shaft. The signals generated by the encoder can be used to accurately define the position and direction of the shaft at any point in its rotation. The encoder is commonly used in applications such as servo-motors, robotics, machine tooling, and motion control. It operates based on a disk-type code wheel and an optical detector, both of which need to be accurately aligned and installed for the encoder to operate properly.

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