ACS Product Catalog

The ACS Scientific MCR Catalog Page

The ACS Scientific Product Catalog

Advanced Control Systems Corporation designs, manufactures and supports a wide variety of application specific and general purpose motion control systems. In this catalog you should find exactly what you need.


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Science In Motion

Dependable, durable, low noise generating motion control systems for demanding synchrotron environments.

Science In Motion

Modular motion control systems, motor amplifiers & power supplies that conform to laboratory needs and budget.

Science In Motion

Customer demand driven and application specific new product & solution development.

Science In Motion

The Step-Pak Modular Motion Control System. Your system, your specification, your motor type on your budget.

Science In Motion

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The ACS Scientific MCB & SMC Series Integrated Stepping Motor Driver/Controllers allow for easy drive and control for up to four motors from a single board. Up to 8 MCB boards in a 19" rack can provide addressable drive and control for up up 32 motors.

The ACS Scientific Step-Pak™ Modular Motion Control System is used in laboratory and industrial environments around the world as an ideal solution for modular, flexible multi-axis stepping and servo motor drive and control.


The ACS Scientific MCR Series Integrated Stepping Motor Driver/Controllers provide simple rack or table mount 4 or 8 axis stepping motor power, drive and programmable control for a weath of applications. Ethernet communications make networking quick and easy.

Here For Support

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Call us at any time to speak with a real live engineer, or contact us by e-mail for product information, quotations and/or product support. 781-562-0475

Design & Manufacturing

Made In The USA

All ACS Scientific Controllers, Motor Drivers, Servo Amplifiers, Interface Modules and Power Supplies are designed, developed, manufactured and assembled with great care, quality and efficiency at our facilities in the United States of America.

Product Catalog

MCR-4 / MCR-8

4 and 8 Axis Stepping Motor Intelligent Motion Driver/Controllers

The MCR series Intelligent Motion Driver/Controllers are 4 and 8 axis integrated stepping motor controllers that drive and control 2-phase stepping motors with phase currents from 0.25 to 3.0Amps/phase, simultaneously. MCR controllers perform indexing functions without the need of a host computer, or can operate under the direction of a host. The MCR’s internal non-volatile memory will store and execute a programmed instruction set. High efficiency, low noise motor drivers provide ideal remote control for multi-axis positioners, beamline shutters and other laboratory control instrumentation.

Find full driver support for the MCR Series Driver/Controllers in Certified Scientific Software's spec X-Ray Diffraction and Data Acquisition software

 and the EPICS Experimental Physcis and Industrial Control System


MCR Series Controller Features


Powers, Drives and Controls up to 4 (MCR-4) or 8 (MCR-8) 2-Phase Stepping Motors with Stepping Rates up to 50,000 Steps/Sec.

Adjustable Motor Winding Current 0.25 – 3.0 Amps/Phase

High Efficiency, Low Noise Motor Drivers Designed for Laboratory Applications

Nonvolatile Memory for Control Variables & Comprehensive Motion Instruction Set

Quick Adjust Front Panel Controls for Setting & Changing Motor Current, Idle Current and Stepping Mode

Front Panel LED Indicators for Home, Limits and Motor Busy Status

Certified Scientific Software – spec Driver Support

EPICS Driver Support

Ethernet & RS-232 Serial Communications

Circular Connectors
Motor 5-Pin Conxall/Switchcraft Type
Limits 7-Pin Conxall/Switchcraft Type

Optional External Manual Jog Control

MCR Series Controller Specifications


Motor Drive Current 0.25 – 3.0 Amps/Phase
Motor Idle Current 0 to 3.0 Amps/Phase
System Power Supply – 120VAC Standard               
                                         220VAC Optional
Motor Requirements
2-Phase Bi-Polar Stepping Motors, or
4-Phase Motors Connected as 2-Phase
4, 6 or 8 Leads
0.25 – 3.00Amp Winding Current

Motor Operating Mode
Low Noise Bi-Polar Chopper Drive
Full Stepping
Half Step with Torque Compensation
Quarter Step with Torque Compensation
Eighth Step with Torque Compensation

Operating Temperature 0C – 50C (32F – 140F)
Storage Temperature -20C – 70C (-4F – 160F)
Humidity <95% Non-Condensing

Width – 19.00” (482.60mm)
Depth – 15.25” (387.35mm)
Height – 3.469” (88.11mm) / 2U Rack Spacing
Circular Connectors for Motor and Limits Wiring

Download the MCR Series Product Brief Here...

 Download the MCR Series User's Manual Here...



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