stepIM Nema 23
Wednesday, 09 September 2015

stepIM – integrated closed loop stepper motors

Servotronix introduces a new series of integrated stepper motors with CANopen communication interface

For many years customized stepper motor solutions from Servotronix have been used in textile manufacturing, milling and grinding, woodworking, surgical robots and other medical devices, as well as renewable energy applications.


To meet the market’s growing demand for greater machine efficiency and cost reduction, Servotronix recently introduced a series of closed loop, integrated stepper motors as an off-the-shelf product. With a superior closed loop control and a cost-effective design, stepIM provide an efficient and affordable solution for applications that require the performance of a servo at the price level of a stepper.

The closed loop commutation significantly enhances the performance of the stepper motors, when compared to conventional open loop control. The integrated electronics control the stepper motor as a two phase BLDC motor, implementing position, velocity, and DQ current control loops, as well as advanced control algorithms. With its integrated magnetic 12 bit absolute encoder and an update rate of 16 kHz stepIM ensures accurate positioning and optimal torque utilization at any speed.

stepIM is currently available in several sizes: NEMA 23 in three lengths and NEMA 34 in two lengths. Its operating voltage ranges from 14 to 48 VDC. Depending on motor length, the torque ranges from 7 to 1 Nm.  Furthermore, stepIM offers four digital inputs, two digital inputs and one analog input.stepIM controls the axis via CANopen fieldbus according to CiA 402 protocol, and supports six standard CANopen modes of operation: profile position, profile velocity, torque profile, homing, and cyclic synchronous position.

The stepIM series significantly reduces cost, space and machine complexity and as such is perfectly suited for decentralized machine architectures. The integrated design of motor, control and power electronics minimizes the effort and expense associated with machine installation, as wiring and cable routing are reduced. Besides the ease of installation, machine complexity is reduced as fewer components and less electrical cabinet space is required.


For more information about the stepIM, visit website:
or download the stepIM data sheet:


stepIM image for web PR


About Servotronix: Servotronix Motion Control develops and manufactures standard and customized automation solutions with a focus on motion control. With over 28 years of experience, the company has developed four generations of high performance servo drive families and motion control solutions tailored to customer needs and designed to meet the form, fit, functionality, and cost specifications of a wide range of applications and industries. With a global customer base of leading machine builders and automation system suppliers, Servotronix guiding principles are providing its customers with high-quality products, cost effective solutions, and on-time deliveries.


For more information: Servotronix Motion Control Ltd.,