Description
Product Brief Introduction
Heavy-duty closed-loop position detection module dedicated to linear and rotary motion control systems. The unit adopts full electromagnetic interference suppression structural design, outputs absolute position data without power-on homing, and supports continuous long-cycle operation in severe industrial workshop environments.
Core Technical Specifications
- Position Sampling Resolution: 16-bit absolute encoding
- Nominal Supply Voltage: 24 VDC, allowable input range: 18 VDC ~ 30 VDC
- Communication Bus Interface: Isolated RS485, native Modbus RTU protocol
- Operating Ambient Temperature: -40 °C ~ +75 °C
- Storage Temperature Range: -50 °C ~ +85 °C
- Protection Grade: Front housing IP65, rear wiring terminal compartment IP54
- Vibration Resistance Index: 10 Hz–2000 Hz, 10 g continuous vibration resistance
- Mechanical Shock Resistance: 50 g, 11 ms half-sine shock withstand
Functional Characteristics
- Retain absolute position coordinate data after power loss, no zero reset required after power recovery
- Integrate independent hardware protection circuits for overvoltage, reverse polarity and short circuit
- Embedded digital jitter filtering algorithm to eliminate position fluctuation caused by mechanical clearance
- Dual redundant signal output channels for safety interlock machinery control loops
- On-board non-volatile memory stores communication address, baud rate and position offset parameters permanently
Fixed Performance Parameters
- Position data refresh cycle: 1 ms fixed update frequency
- Position measurement accuracy: ±0.001° angular error for rotary applications
- Maximum sustainable mechanical rotation speed: 12000 RPM
- Maximum signal transmission distance with shielded twisted cable: 1200 m
- Internal circuit signal isolation voltage: 2000 VAC
Material Composition
- Outer housing: Die-cast aluminum alloy with anti-corrosion black powder coating
- Circuit substrate: UL94 V-0 flame retardant FR4 high-temperature industrial PCB
- Sealing components: Fluorosilicone high-low temperature resistant rubber gaskets
- Terminal conductive contacts: Gold-plated copper alloy with anti-oxidation treatment
Structural Features
- Integrated rectangular modular shell with integrated mounting flange for direct equipment fixation
- Separate isolated cavities for power wiring and signal wiring to avoid crosstalk
- Central hollow shaft mechanical interface for coaxial direct coupling with drive motor shafts
- Built-in cable strain relief structure to prevent wire breakage under long-term vibration
Working Principle
The internal optical absolute encoder sensing unit collects mechanical rotation or linear displacement signals; dedicated ASIC chip converts optical analog signals into standardized digital position data; isolated RS485 transceiver transmits data packets to upper motion controllers. Hardware real-time monitoring circuits continuously track supply voltage and signal state. Once operating parameters exceed factory calibrated thresholds, the module locks fault signals and outputs abnormal state codes through the communication bus.
Core Advantage Highlights
- Ultra-wide temperature range supports outdoor equipment, refrigerated production lines and high-temperature metallurgical workshops
- Dual redundant signal channels eliminate single-point position detection failure risks
- Complete power-signal galvanic isolation eliminates ground loop interference distortion
- Cancel periodic zero calibration to reduce equipment maintenance downtime
- Universal Modbus RTU protocol matches all mainstream industrial PLC and motion controller brands
Applicable Industries
Metallurgical rolling mills, port container lifting cranes, injection molding equipment, CNC machine tools, wind turbine pitch control systems, automatic packaging production lines, hydraulic press closed-loop positioning systems
Standard Installation Requirements
- Mounting base flatness tolerance ≤ 0.02 mm per 100 mm length of contact surface
- Hollow shaft coupling radial runout concentricity error controlled below 0.05 mm
- All signal wiring must adopt shielded twisted-pair cables; cable shielding single-point grounded only at the control cabinet
- Maintain minimum 20 mm surrounding gap for natural heat dissipation air circulation
- Horizontal, vertical and overhead installation are fully allowed; upside-down installation has no performance limitation
Mandatory Operation & Maintenance Precautions
- Never input supply voltage higher than 30 VDC to power terminals
- Cut off power supply before opening terminal cover to avoid electrostatic damage to internal circuit boards
- Do not use high-pressure water jet to flush the module housing directly
- For 24/7 continuous operation equipment, replace fluorosilicone sealing gaskets every 24 months
- Arrange signal cables at least 30 cm away from high-current AC power cables to prevent electromagnetic signal distortion
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