Astrosyn is launching the STM23 integrated stepper motor and drive that can optionally be supplied with an encoder mounted on its rear shaft to enable the motor to operate in closed-loop mode and, it is claimed, out-perform servo motors for speeds up to around 1500rpm. It is also said to achieve better acceleration, especially for short-distance applications.
The combined unit is more compact than an equivalent servo motor, as well as being considerably less expensive. Other advantages are long life and high reliability. Taken together these benefits make the STM23 an attractive alternative to servo motors for a wide range of applications.
A size 23 motor and drive are combined in a compact aluminium housing that also acts as a heatsink. Designed from the outset as an integrated package, the STM23 reduces cabling requirements and saves space and costs. It also has excellent EMC properties.
The high-resolution drive is programmable using rich instruction set software via built-in RS232 and RS485 interfaces. Coding can be downloaded to the drive for standalone operation, or the unit can be controlled using serial commands from an attached PC, PLC or other host controller.
Two versions are available from Astrosyn, with single or double stacks. Power supply is 12-80V DC and output current 0.2-5A peak.
For more information, visit www.astrosyn.com
