RELIANCE DSA-MTR12A2

RELIANCE DSA-MTR12A2

Product Introduction The DSA-MTR12A2 is a high-performance industrial servo drive manufactured by Reliance Electric, designed for precision closed-loop motion control in automated machinery. It delivers stable torque output and supports multiple control modes to match synchronous and asynchronous servo motors. This drive integrates comprehensive fault diagnosis and protection circuits, and it is widely deployed in factory automation lines, material handling equipment and special machine tools.

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Description

RELIANCE DSA-MTR12A2

Technical Specifications

  • Product Type: Servo amplifier / motor drive
  • Rated Output Current: 12 A
  • Input Supply Voltage: 230 VAC single phase
  • Control Modes: Position control, speed control, torque control
  • Communication Interface: RS485 Modbus RTU
  • Enclosure Protection Rating: IP20
  • Operating Ambient Temperature: -20 °C to +40 °C
  • Storage Temperature: -40 °C to +85 °C
  • Relative Humidity: 5% to 95%, non-condensing
  • Mounting Method: DIN rail cabinet mounting
  • Motor Compatibility: Up to 3 HP servo motors
  • Response Bandwidth: High dynamic response for fast positioning cycles

Functional Features

  1. Closed-loop vector control algorithm provides smooth speed regulation and high torque at low speed.
  2. Built-in overcurrent, overvoltage, undervoltage, overheat and motor overload protection.
  3. Real-time fault detection and fault code display for rapid troubleshooting.
  4. Supports electronic gear function for flexible positioning ratio configuration.
  5. RS485 Modbus RTU communication enables connection with PLC and upper monitoring systems.
  6. Compact cabinet design saves control cabinet installation space.
  7. Parameter backup and restore function via dedicated software.
  8. High anti-interference capability to resist industrial electromagnetic noise.
  9. Dedicated encoder feedback port for real-time rotor position reading.
  10. Fast emergency stop response for machine safety protection.

Application Scenarios

  • Automated assembly lines
  • Packaging machinery positioning axes
  • Material handling and conveying equipment
  • Metal cutting special machine tools
  • Printing and labeling automation equipment

Material Composition

  • Housing: Flame-retardant engineering plastic casing
  • Main PCB: FR4 high-reliability printed circuit board with conformal coating
  • Power components: IGBT power modules, high-frequency rectifier diodes
  • Terminal block: Spring-type copper alloy wiring terminals
  • Heat sink: Aluminum alloy extruded heat sink
  • LED indicators: Status LEDs for power, run and fault signals

Structural Characteristics

  • Standard vertical DIN rail modular structure.
  • Front panel equipped with LED status indicators and operation keypad.
  • Lower section contains power wiring terminals and control signal terminals.
  • Rear side with DIN rail locking buckle.
  • Internal layout separates high-power power circuit and low-voltage control circuit for isolation.
  • Aluminum heat sink mounted on the back side for power device heat dissipation.

Working Principle AC input power is rectified into DC bus voltage inside the drive. The IGBT power module converts DC voltage into variable-frequency three-phase AC power to drive the servo motor. The encoder feeds back motor rotor position and speed signals back to the drive controller. The internal CPU compares the command value and actual feedback value, adjusts PWM output in real time to realize closed-loop position, speed or torque control. The protection circuit continuously monitors voltage, current and temperature parameters and triggers shutdown action once abnormal conditions are detected.

Installation Requirements

  • Install on DIN rail inside independent industrial control cabinet.
  • Maintain sufficient ventilation clearance around the drive for heat dissipation.
  • Separate power cables and encoder feedback cables, use shielded cables for feedback wiring.
  • Cabinet protective earth connection must be completed with qualified grounding resistance.
  • Input power must be equipped with circuit breaker and fuse protection.
  • Keep the cabinet ambient temperature within -20 °C to +40 °C.
  • Complete parameter commissioning and motor auto-tuning before machine operation.

Usage Notes

  • Do not plug or unplug wiring terminals when power is active.
  • Do not exceed rated continuous current and peak torque limits.
  • Keep the cabinet free from dust, oil mist and corrosive gas.
  • Motor insulation test must disconnect wiring from the servo drive.
  • Store spare units in dry, anti-static warehouse environment.
  • Perform regular inspection of terminal tightness and heat sink cleanliness.
  • Modify motion parameters only after confirming machine safety status.

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