Industry First: Smallest integrated drive/control/encoder and microstepping motor in NEMA 11

Written by: LG Motion Ltd | Published:

Arcus Technology, the USA stepper motor innovator, represented nationally by LG Motion, now offers a complete microstepping motor + drive + control + encoder package based around the diminutive NEMA 11 size stepper motor with a 28 mm square housing and length of just over 70 mm for the triple stack motor version.

Capable of a 0.17 Nm stall torque, the DMX-K-SA-11 is the smallest industry package for a distributed motor, driver, controller and encoder solution available today - and is delivered as a true plug and play package for cost effective installation with free of charge intuitive multi-tasking motion programming and set-up software.

With miniaturisation a key factor in many life science and research related applications, the DMX-K-SA-11 is becoming increasingly popular for its compact size and high torque to size performance. A recent application for a film camera equipment manufacturer allowed the installation of the tiny DMX-K-SA-11 package to drive and position a miniature video camera that required precise run and repeat motion sequences in very confined spaces. The compact solution perfectly merged into the tight space and the microstepping smoothness, with almost no vibration and excellent repeatability, provided impressive multiple pass visual effects. In another application a multispectral digital still camera lens system that rotates interchangeable colour-transparent screens for use in forensics, biological identification and many other life science areas was developed with the NEMA size 11 package as a very compact and cost effective solution for commercial use (see image).

The DMX-K-SA-11 features RS485 communication and opto-isolated limit and home inputs with a single digital output. The BASIC-like programming language simplifies high resolution position control with up to 1/16 microstepping in combination with an integrated 256 line incremental encoder.

Also available are NEMA 17 and 23 frame size versions of the DMX-K-SA offering increased torque with additional digital I/O that may be used for high speed position capture and event synchronisation. A 4000 count/rev encoder allows fine resolution, whilst a 'stepNloop' feature provides a closed loop algorithm for high repeatability and accurate positioning. Modbus RTU is also supported.

Other variants of the Arcus DMX series offer a further choice of communication interfaces including USB 2.0, CANopen and Ethernet. LG Motion also offer evaluation kits based on Arcus Technology's DMX-J-SA series as a NEMA 17 frame integrated microstep motor + control + drive for USB 2.0 with everything required to run and evaluate a single axis motion system.

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