Low-cost microstepping drive has high performance

Along with 5 – 24 VDC opto-isolated I/O for pulse, enable and fault, the drive also includes microstep emulation which allows smooth microstepping motion from low pulse/rev frequency input; and its digital filter prevents position error from command signal electrical noise. With volume pricing set at extremely competitive rates, the drive will suit OEMs and machine builders looking to automate simple processes using PLCs, PACs or pulse generating motion controls - with smooth and precise open-loop motion.

The STR2M has user selectable motor current from 0.25 A to 2.2 A/phase from a 12 to 48 VDC externally supplied power source; allowing typical use with 4- and 8-lead stepper motors from NEMA size 17 to 23 with an upper stall torque capability of around 1.3 Nm for a three-stack size 23 motor. 16 switch selectable resolutions allow microstepping from 200 to 25600 steps/rev.

For drive commissioning, a simple self-test switch sets the motor in a forward/reverse mode whilst status LEDs display faults for motor connection, temperature, current and voltage which trigger the fault output and shut down the drive. The drive is also protected for over- and under-voltage as well motor/wiring short circuits. For applications where rapid start-stop is anticipated, a separate regeneration clamp is available. Measuring just 56 x 93 x 21 mm, with screw terminal connectors the compact drive is easily installed.

As AMP’s exclusive distributor for the UK, Mclennan supplies its complete range of servo and stepper motion components including the STM23 series stepper motors with integrated drives and intelligent controllers which are now available with Ethernet communications. Mclennan represents a select group of global motion control component manufacturers and offers a comprehensive product range that includes brushed and brushless DC and AC servo motors, stepper motors, spur and planetary gearboxes, drives and motion controls – with the capability for in-house designed customised precision mechatronics assemblies.