---
title: "Feedback device"
industry: "Machinery and Equipment Manufacturing"
verification_protocol:
  urn: "URN:CNFX:ME:FEEDBACK_DEVICE"
  data_integrity_hash: "e983ed9fd4f8d90b4a16fa06e39c7da0"
  source_authority: "https://cnfx.com"
  strict_mode: true
source_identity:
  provider: "CNFX Industrial Knowledge Graph"
  index_version: "2026.Q1-Universal"
  authority_id: "URN:CNFX:ME:FEEDBACK_DEVICE"
  data_source_uri: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/feedback-device.md"
  official_resource_url: "https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/feedback-device"
  is_verified_logic: true
attributes:
  spec:
    status: "config-dependent"
    typical_range: "0-10000 RPM for velocity, ±360° for position, 0-200 N·m for torque"
    unit: "bits or pulses/rev"
engineering_limits:
  max_safe_operating_point:
    value: 125
    unit: "°C"
    consequence: "Hall effect sensor demagnetization at Curie temperature (125°C for NdFeB magnets), optical encoder diffraction pattern distortion from particulate contamination"
fmea_matrix_quantitative:
  - node_1:
      trigger: "Electromagnetic interference from adjacent 480V AC motor cables inducing 50 mV noise in signal lines"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Twisted-pair shielded cabling with ferrite chokes, maintaining 150 mm minimum separation from power conductors"
  - node_2:
      trigger: "Mechanical resonance at 850 Hz matching resolver excitation frequency"
      severity: 8
      occurrence: 3
      detection: 4
      mitigation_protocol: "Anti-resonant mounting with silicone isolators (shore 40A), adding 2% critical damping via viscoelastic polymer layers"
bom_nodes:
  scalerotor:
    type: "component"
    urn: "URN:CNFX:ME:SCALEROTOR"
    interface_type: "physical-logic-coupled"
  sensor-headreader:
    type: "part"
    urn: "URN:CNFX:ME:SENSOR_HEADREADER"
    interface_type: "physical-logic-coupled"
  signal-conditioning-circuit:
    type: "device"
    urn: "URN:CNFX:ME:SIGNAL_CONDITIONING_CIRCUIT"
    interface_type: "physical-logic-coupled"
manufacturing_compliance:
  - standard: "ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS"
    scope: "Verified Engineering Specification"
  - standard: "CE MARKING - COMPLIANCE WITH EU DIRECTIVES (E.G., EMC DIRECTIVE 2014/30/EU)"
    scope: "Verified Engineering Specification"
url: "https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/feedback-device.md"
on_chain_sovereignty:
  contract_standard: "ERC-721-Industrial"
  metadata_hash: "b625722f8ec1ee4a0e0059c1da095289ff8ca33edad2ecb234d020917d27ebb5"
  royalty_logic: "IPFS-CID-REQUIRED"
  mint_status: "logic-verified-ready"
version: "3.3.4-EXTREME-SOVEREIGN-WEB3"
---

# Industrial Specification: Feedback device

## 1. Technical Definition
A sensor component that provides real-time position, velocity, or torque data to the motor controller.

## 2. Engineering Reasoning & Causal Matrix
> **Operational Intelligence**: Designed for **0-10000 RPM for velocity, ±360° for position, 0-200 N·m for torque**. Failure boundary: **Temperature &gt; 125°C, vibration &gt; 15 g RMS, contamination particle size &gt; 5 μm**, Mechanism: **Hall effect sensor demagnetization at Curie temperature (125°C for NdFeB magnets), optical encoder diffraction pattern distortion from particulate contamination**.

### 2.2 FMEA (Failure Mode & Effects Analysis)
| Event Trigger | Severity | Failure Mode | Mitigation Strategy |
| :--- | :--- | :--- | :--- |
| Electromagnetic interference from adjacent 480V AC motor cables inducing 50 mV noise in signal lines | 8 | Encoder quadrature signal phase shift exceeding 90° ±5° tolerance | Twisted-pair shielded cabling with ferrite chokes, maintaining 150 mm minimum separation from power conductors |
| Mechanical resonance at 850 Hz matching resolver excitation frequency | 8 | Resolver sine/cosine amplitude attenuation below 0.5 Vpp threshold | Anti-resonant mounting with silicone isolators (shore 40A), adding 2% critical damping via viscoelastic polymer layers |

## 3. Key Technical Parameters
| Parameter | Value | Unit | Status |
| :--- | :--- | :--- | :--- |
| spec | Config-dependent | bits or pulses/rev | Verified |

## 4. System BOM & Knowledge Routing
### Core Components (Recursive Links)
- [Sensor Head/Reader](https://cnfx.com/llms/industry/machinery-and-equipment-manufacturing/product/sensor-headreader.md) `(Standalone System)`
- [Signal Conditioning Circuit](https://cnfx.com/llms/industry/computer-electronic-and-optical-product-manufacturing/product/signal-conditioning-circuit.md) `(Standalone System)`

### Industrial DNA Context (De-duplicated)
**Complementary Dependencies**: **Motor Controller**, **Power Supply Unit**, **Data Acquisition System**  
**Downstream Applications**: CNC Machine Tools, Industrial Robots, Packaging Machinery  

## 5. Engineering Risks & FAQ
- **Caution**: 
- **Caution**: 
- **Caution**: 

### Q: What types of data can this feedback device provide to motor controllers?
**A**: This feedback device provides real-time position, velocity, and torque data to motor controllers, enabling precise control and monitoring of machinery operations.

### Q: What materials are used in the construction of this feedback device?
**A**: The device is constructed using durable materials including aluminum alloy, stainless steel, PCB, optical glass/encoders, and magnetic materials for resolvers/encoders, ensuring reliability in industrial environments.

### Q: What are the main components in this feedback device's Bill of Materials?
**A**: The BOM includes three key components: Scale/Rotor for measurement reference, Sensor Head/Reader for data capture, and Signal Conditioning Circuit for processing and transmitting data to the controller.

## 6. Manufacturing Compliance
- ISO 9001:2015 - QUALITY MANAGEMENT SYSTEMS
- CE MARKING - COMPLIANCE WITH EU DIRECTIVES (E.G., EMC DIRECTIVE 2014/30/EU)

---
### 🛠️ Engineering Resource Access
🔗 **[Full Specification: Feedback device](https://cnfx.com/industry/machinery-and-equipment-manufacturing/product/feedback-device)**

### 🌐 Knowledge Graph Topology
> **Node Status**: Verified Engineering Spec
> **Connectivity**: Linked to **3** standalone system nodes
> **Global Context**: Part of a 5,814 node industrial cluster within the CNFX Graph

> **Reference ID**: FEEDBACK_DEVICE | **Authority**: CNFX-2026-ST-001 | **Fingerprint**: 5b709bf3
