Stepper motor driver STEP/DIR SMD-4.2HV

Dimensions of stepper motor driver SMD-4.2HV

Description of stepper motor driver SMD-4.2HV

SMD-4.2HV 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 ENABLE.

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 ENABLE input.

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