US FREE！1PC Nema23 Stepper motor driver DM542A peak 4.2A 18-50VDC 128 microstep

Description

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This item includes:
1 pc Stepper motor driver DM542A, peak 4.2A,18-50VDC, 128 MICSTEPS
1. Stepper motor driver
Introduction:
DM542A is a type of two-phase hybrid stepping motor driver, The drive voltage of which is from 18VDC to 50VDC. It is designed for use with 2-phase hybrid stepper motor of all kinds with 42mm to 86mm outside diameter and less than 4.0A phase current. This circuit that it adopts is similar to the circuit of servo control which enables the motor run smoothly almost without noise and vibration. Hording torque when DM542A run under high speed is also significantly higher than the other two-phase driver, what’s more, the positioning accuracy is also higher. It is widely used in middle and big size numerical control devices such as curving machine, CNC machine, and computer embroider machine, packing machines and so on.
Features:
High performance, low price
Average current control, 2-phase sinusoidal output current drive
Supply voltage from 18VDC to 50VDC
Opto-isolated signal I/O
Overvoltage, under voltage, overcorrect, phase short circuit protection
15 channels subdivision and automatic idle-current reduction
8 channels output phase current setting
Offline command input terminal
Motor torque is related with speed, but not related with step/revolution
High start speed
High hording torque under high speed