LIN Engineering and Trinamic Motion Control, represented in Australia by Switches Plus Components , has released the MiniPak, combining a Lin size-11 step motor and a drive/control board using the Trinamic TMC222 drive chip.
The Nema size 11, 1.8° motor measures 709mm2 and is available with a length of 31.496mm. It provides high torque in a small package.
The TMC222 uses an I²C interface and has a programmable coil current of up to 800mA, a voltage operating range from 8V to 29V dc and is capable of 2x to 16x microstepping. The driver board contains a fixed-frequency PWM current control with automatic selection of fast and slow decay mode as well as a built-in ramp generator for autonomous positioning and speed control. It is also capable of on-the-fly alterations of target position.
The MCU unit, which is sold separately, adds RS485, homing, two-module handling, parameter storage, constant velocity mode, two demo modes and an ASCII interface. When the MiniPak is used along with the MCU board the user can daisy chain up to 32 axes.
The MiniPak Designer’s Kit includes the MCU board, the UBS485 as well as the necessary cables for easy installation. The MiniPak is suitable for medical, robotics and communications applications.