INDUSTRY COMPONENT

Sensor/detector

Precision sensor for measuring angular position, speed, and direction in rotary encoders and resolvers.

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Component Specifications

Definition
A critical sensing element within rotary encoders and resolvers that detects mechanical rotation and converts it into precise electrical signals (digital pulses or analog sine/cosine waves) for position, velocity, and direction feedback in closed-loop control systems.
Working Principle
Operates on optical, magnetic, or inductive principles. Optical types use a light source, code disk with patterns, and photodetectors to generate pulses. Magnetic types use Hall-effect sensors and magnetized rotors. Resolvers use inductive coupling between rotor and stator windings to produce sine/cosine outputs proportional to shaft angle.
Materials
Housing: Aluminum alloy or stainless steel; Sensing elements: Silicon photodiodes (optical), rare-earth magnets (magnetic), copper windings (resolvers); Code disk: Glass or polymer with chrome patterning (optical); Bearings: Stainless steel or ceramic.
Technical Parameters
  • Accuracy ±1 arc-second to ±5 arc-minutes
  • Resolution Up to 24-bit absolute, 10,000 PPR incremental
  • Output signal A/B/Z pulses (incremental), SSI/SPI/BiSS (absolute), 1Vpp sine/cosine (resolver)
  • Supply voltage 5VDC, 12-24VDC
  • Operating speed Up to 30,000 RPM
  • Protection rating IP65 to IP69K
  • Temperature range -40°C to +120°C
  • Electrical interface Push-pull, line driver, HTL, TTL
Standards
ISO 13849-1, IEC 60034, DIN 40050, EN 60529

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Sensor/detector.

rotary encoder sensor resolver detector position feedback sensor angular measurement optical encoder sensor magnetic encoder industrial sensor motion control feedback Sensor/detector Sensor/detector in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Rotary Encoder/Resolver

A sensor that converts the angular position or motion of a shaft to an analog or digital signal.

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Engineering Analysis

Risks & Mitigation
  • Signal degradation from contamination (optical types)
  • Electromagnetic interference affecting accuracy
  • Mechanical wear in bearings
  • Temperature extremes beyond specification
  • Moisture ingress damaging electronics
FMEA Triads
Trigger: Contamination on optical code disk
Failure: Signal loss or erroneous position reading
Mitigation: Use sealed housings (IP67+), regular cleaning protocols, or switch to magnetic sensing in dirty environments
Trigger: Bearing wear or shaft misalignment
Failure: Increased mechanical error, vibration, eventual seizure
Mitigation: Proper installation alignment, use of flexible couplings, scheduled bearing replacement per maintenance guidelines

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Position accuracy within ±0.001° to ±0.1° depending on grade; repeatability <1 arc-second for high-precision models
Test Method
Laser interferometer calibration per ISO 230-2, electrical signal verification with oscilloscope and encoder tester, environmental testing per IEC 60068-2

Buyer Feedback

★★★★☆ 4.9 / 5.0 (8 reviews)

"Testing the Sensor/detector now; the technical reliability results are within 1% of the laboratory datasheet."

"Impressive build quality. Especially the technical reliability is very stable during long-term operation."

"As a professional in the Machinery and Equipment Manufacturing sector, I confirm this Sensor/detector meets all ISO standards."

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Frequently Asked Questions

What is the difference between incremental and absolute sensor types in rotary encoders?

Incremental sensors output pulse trains (A/B channels) for relative position changes and require a reference point. Absolute sensors provide a unique digital code for each shaft position, retaining position after power loss.

How do resolver sensors differ from optical encoder sensors?

Resolver sensors use inductive coupling between rotor and stator windings to produce analog sine/cosine signals, offering high robustness in harsh environments. Optical sensors use light patterns for higher resolution but are sensitive to contamination.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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