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AR-BC4E20EU series USB Four Motor 0.15 to 2 Amp Current Regulating Stepper Motor Controller

AR-BC4E20EU series USB Four Motor 0.15 to 2 Amp Current Regulating Stepper Motor Controller

  • 24276


The AR-BC4E20EU is a complete USB controlled Bipolar dual stepper motor controller system. When configured with its preprogrammed PotRouter firmware, it includes the capability of driving one to four bipolar stepper motors using a single USB connection.  It may also be controlled via RS232, if you use our RS232ToTTL Serial Adapter board.

The current that is sent to the motors is regulated by the controller using a simple "chopper drive". This technique normally allows for a higher top speed from the motors than you would get operating them at their "nominal" voltage (that is to say, the voltage that would be required to attain the motor's rated current if run through the coils).  The actual current used is controlled by your application, with the top current that is available being based on which option your order for the controller:

  • 312 mA: Specifies  20 to 312 mA as the supported current range per winding
  • 700 mA: Specifies  150 to 700 mA as the supported current range per winding
  • 2000 mA: Specifies 150 to 2000 mA (2 amps) as supported current range per winding

    If you are going to be operating at currents above 900 mA, or if you are going to leave the windings on continuously, you will need to cool the board with an 8-10 CFM fan assembly.  We do offer that as a separate product, or you can provide your own.

    The two connector options ("MTA-100" and  "Screw Terminal") control how you connect most TTL I/O and motor wires to the board.

    • The 'MTA-100' option specifies use of latching Amp MTA-100 connectors, and  is recommended for any production system.  When the cables are correctly produced, the MTA-100 is vibration resistant, and is easier to use in a production environment. 
    • The "Screw Terminal" option specifies use of screw terminals for direct wire connection to the board.  This is suggested for anyone who is just doing experiments or is connecting to just one or two motors

    The board has ESD protection on most of the TTL inputs (except for the RST line).  Note that the protection is only active when the board is connected to a properly grounded power supply, such that the GND connection on the board power connector goes to true earth ground.

    If your signal sources for the TTL inputs need to be optically isolated (such as signals whose voltage range is in the range of 5 to 24 volts), you may elect to use our AR-OPTOISO4CHAN product to act as an input buffer.

    The firmware that is used describes the "personality" of the board.  You can reprogram the board with either of these firmwares at any time using the supplied firmware update tool.   If you like, you may use the cart comments field to request a particular firmware (remember: the BC4E20PotRouter firmware is installed by default, so you only need to do this if you would prefer the BC4ENCRouter firmware to be preinstalled on your board.)

    • BC4E20PotRouter (click to see the manual) allows for simultaneous independent asynchronous motion between the motors.  This is normally the firmware preprogrammed onto  the board at the time of your order.
    • BC4E20NCRouter (click to see the manual) allows for pen-plotter-like control, wherein perfect rate scaling is automatically performed between the motors in order to generate the equivalent of straight-line motion if a pen plotter were to be attached.

    The AR-BC4E20EU is a member of our current regulated controller line.  The entire line consists of:

    Product
    Motors
    Max Current
    USB or RS232
    2
    2.0
    RS232
    2
    2.0
    USB
    4
    2.0
    USB
    6
    2.0
    USB
    6
    2.5
    USB
     

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