RELIANCE 57411-2 high-precision resolver input module
June 01, 2026

RELIANCE 57411-2 high-precision resolver input module

The RELIANCE 57411-2 is a high-precision resolver input module from Reliance Electric, designed for the AutoMax/DCS 5000 automation platform. It captures rotary shaft position and velocity data from resolvers, delivering accurate, high-resolution feedback for motion control systems. Built with industrial-grade components and a rugged enclosure, it ensures stable, long-term operation in harsh factory environments.

Description

Product Overview

The RELIANCE 57411-2 is a high-precision resolver input module from Reliance Electric, designed for the AutoMax/DCS 5000 automation platform. It captures rotary shaft position and velocity data from resolvers, delivering accurate, high-resolution feedback for motion control systems. Built with industrial-grade components and a rugged enclosure, it ensures stable, long-term operation in harsh factory environments.

Model Definition

RELIANCE is the brand. 57411 denotes the resolver input module series, defining core hardware and function. The suffix 2 indicates the hardware revision and performance grade, distinguishing it from 57411-1 by enhanced sampling flexibility and compatibility with extended resolver types.

Technical Parameters

  • Resolution: 12-bit per revolution, plus 2-bit revolution counter.

  • Sampling Time: 500 microseconds to 32.767 seconds, software-configurable.

  • Power Consumption: Approximately 10W.

  • Operating Temperature: -10°C to +60°C; storage: -40°C to +85°C.

  • Shock/Vibration: Industrial-grade resistance for continuous operation.

  • Certifications: UL, CE compliant.

Interface and Communication Configuration

  • Resolver Input: D-Sub or terminal connector for direct resolver wiring.

  • Backplane Interface: Plugs into AutoMax/DCS 5000 rack backplane for power and data exchange.

  • Status Indicators: Five front-panel LEDs for power, OK, fault, and signal status.

  • Configuration: Two 6-position keyslots for hardware setup.

  • Communication: No independent fieldbus; data transmitted via backplane to the host controller.

Core Functions

  • Precision Position Sensing: Converts resolver analog signals to digital angular position data.

  • Velocity Calculation: Derives shaft speed from position samples for closed-loop motion control.

  • High-Speed Sampling: Supports fast, configurable sampling for dynamic applications.

  • Signal Conditioning: Filters noise, isolates circuits, and provides overvoltage/overcurrent protection.

  • System Diagnostics: Onboard self-test; LEDs indicate operational status and faults.

Application Scenarios

  • Motion Control: High-precision positioning in CNC machines, robotics, and servo systems.

  • Motor Drives: Rotor position feedback for large AC/DC motors in metallurgy, mining, and paper industries.

  • Process Automation: Conveyors, winders, and rotary machinery requiring accurate speed/position control.

  • AutoMax/DCS 5000 Systems: Native integration with Reliance’s flagship control platform.

Operation and Maintenance Instructions

  • Pre-Installation: Inspect for damage; verify resolver and rack compatibility.

  • Wiring: Power off the system before connecting resolver cables to avoid short circuits.

  • Installation: Insert into the rack, secure with screws, and connect the resolver.

  • Operation: Keep the area dry, ventilated, and free of heavy dust or corrosive gases.

  • Maintenance: Check terminals quarterly for looseness or aging; clean LEDs and connectors.

  • Troubleshooting: If the “OK” LED flashes, power off and re-seat the module; do not open the enclosure.

  • Replacement: Use only Reliance 57411-2 or compatible units to ensure system accuracy.


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