Micromech
01376 333333

RTA - SAC - Open Frame, Stepping Motor Drive

Introduction

  • Series of ministep bipolar chopper drives, suitable for driving medium power two-phase stepping motors, with four, six or eight terminals.
  • Compact, easy to use and cost effective solution. This system is designed for easy mounting inside a metallic electrical cabinet.
  • Equipped with power supply and particularly suitable for stand-alone applications (AC input).
  • Target: medium and medium-low power applications without special configuration requirement, but needing great dynamic performance, high reliability, low acoustic noise and mechanic vibrations reduction .

Highlights

  • Microstepping function up to 4.000 step/rev.
  • Electronic damping facility for further acoustic noise and mechanic vibrations reduction at low and medium speed.
  • Separated connectors for logic signals and power connections.
  • Optoinsulated and differential input and output signals ease interfacing with the most commonly used control systems.

Technical Specifications

  • Version: open frame drive in 101 x 125 x 35 mm, equipped with AMP connectors.
  • Range of operating voltages: 24-50 VAC.
  • Range of current: 1,7-6,0 Amp. Setting up to four possible values by means of dip-switches.
  • Microstepping: 400, 800, 1.600, 3.200 and 500, 1.000, 2.000, 4.000 steps /revolution. Setting by means of dip-switches.
  • Automatic current reduction at motor standstill.
  • Protections:
    - Protection against under-voltage and over-voltage.
    - Protection against a short-circuit at motor outputs.
    - Overtemperature protection with thermal sensor.
  • Optoinsulated inputs compatible with differential control signals.
  • Possibility to switch off motor current with an external logic signal.
  • Operation with a single external supply voltage.High efficiency CHOPPER with MOSFET final stage output.
  • Electronic damping facility for further acoustic noise and mechanic vibrations reduction at low and medium speed.
  • Warranty: 24 months.

Model Name Drive Type Bus Voltage Range (Volt.) Phase Current Range (Amp.)  Dimensions (mm.) Suggested Motors (Flange size) 
SAC 25 STEP/DIR  24 - 50 VDC 1.7 - 3.0 Open frame drive 101 x 125 x 35 mm AMP connectors NEMA 17, NEMA 23, 60 mm. NEMA 34, 
SAC 26 STEP/DIR  24 - 50 VDC 3.4 - 6.0 Open frame drive 101 x 125 x 35 mm AMP connectors NEMA 17, NEMA 23, 60 mm. NEMA 34, 
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RTA - SAC