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Integrated stepper motor and drive

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article image Three choices of frame size, each in three motor lengths.

AUSTRALIAN Baldor has released a range of micro-stepping motors with onboard drive electronics. Their compactness is useful wherever space saving or simplicity of installation is important, such as in instrumentation, test, medical devices and machinery adjustment applications. The DSM series includes three choices of frame size, each in three motor lengths, offering a choice of nine torque ratings spanning 22.6Ncm to 749Ncm.

The range can simplify both development and machine building for OEMs, eliminating the need to find space in the equipment for drives and drive to motor cabling, reducing potential problems from electrical noise. Baldor supports the new motor-drives with its NextMove range of motion controllers. These offer developers the option of PCB modules for system integration in Eurocard or PCIbus form-factors, or ready-to-use packaged controllers. All of these options provide multi-axis control facilities using the Mint motion language. A typical example is NextMove-ESB, which offers a three-axis servo motor control solution combined with control for four stepper axes, in a rugged enclosure with a USB interface.

The three choices of Baldor DSM motor/drives have NEMA frame sizes of 17, 23 and 34. Each frame size can also be selected with one, two or three winding stacks. This provides developers with a choice of holding torque ratings of 22.6Ncm, 42Ncm, 52.9Ncm, 64Ncm, 102Ncm, 169.269Ncm, 406Ncm or 749Ncm.

Users can also select from a number of configurations to optimise the motor/drive for an application, including single or dual shafts with an optical encoder or control knob, and flying lead or connector interfaces. The 1.8º stepping motor can be configured for operation in any of 14 step sizes from 1/2 to 256 micro-steps per full step, using a Windows utility and a motor-to-PC setup cable. The chosen setting is stored in nonvolatile memory, and may also be modified on the fly by the motion controller if required.

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