Stepper motor driver SMD‑4.2HV

SMD-4.2 is designed as a circuit plate with electronics elements, installed on a heatsink plate and covered with a metal case. Besides electronic components, there are indicating and control elements, connection terminals and connectors on the board:

• terminal screws for power supply, stepmotor windings and control circuit connection
• LED for indication of the driver status
• switches SW1 – SW2 to set the microstepping mode
• switch SW3 – to set full or reduced holding current
• switch SW4– for inversion logic signal « EN »

The SMD-4.2HV driver receives logic signals “Step”, “Direction” and “Enable” and convert them into motor commutation. The motor’s shaft moves one angle step (or microstep) as the driver receives one “Step” signal. One step (or microstep) executes as the front edge of the voltage pulse on the “STEP” input. Rotation direction depends on the voltage level and switches by changing voltage level on the “DIR” input. The motor can be urgent stopped by the active signal on the “EN” input.

Maximum phase current and microstepping mode are set by switches at the driver frame.