Stepper motor driver MD3

for DC motorsmotion controller

The MD3 is a stepper motor driver with an integrated motion controller that is capable of driving size 14 to 42 stepper motors from 2 to 256 microsteps per step. Peak motor currents are selectable from 0.5 to 7.0 Amps per phase for the H-option version. The L-option provides selectable current from 0.05 to 1.8 Amps per phase. The MD3 is powered by a single supply voltage from 9 to 50 VDC. The MD3 can be configured and controlled using the open MODBUS RTU protocol over an RS485 bus. US Digital's free MD3 Setup and MD3 Demo program can be used to configure and control the drive using a graphical user interface. The MD3 can be configured to be mostly compatible with US Digital's existing MD2S-D and MD2S-P motor drivers. The pre-wired connector plugs from these existing products can be plugged in as-is to the larger MD3 connectors. The register interface is published so that user can write their own control software for the MD3. Multiple MD3 units can be connected to the same RS485 bus since each unit can be assigned a unique device address. The MD3 has built-in thermal shutdown to protect the drive from overheating and is firmware updatable by the end user.