1. Operating parameters: The SEFOWOD STD3922S constitutes a new generation of all-digital stepper motor driver by combining an advanced digital signal processing (DSP) chip with self-developed patented technology. Working voltage: AC110V - 220V.Signal voltage: Fully compatible from 5V to 24V. Signal frequency: Less than or equal to 150Khz. Trigger mode: Triggered by falling edge by default and can be modified to be triggered by rising edge. Working mode: Single pulse by default, double pulse and speed input/output (requires setting).

2.Performance Characteristics: The STD3922S micro-step driver of SEFOWOD offers precise current and subdivision configurations. The current setting range is from 1.7 to 9.0A. The subdivision setting range is from 400 to 60,000, aiming to achieve a more stable operation of the motor.

3.Size＆weight:STD3922S volume:200x148x70mm(7.87x5.83x2.76inch).  Weight: 2.87 lbs.

4.Application scope: The STD3922S, a new generation of all-digital stepper driver, Applicable to the entire 3-phase stepper motor series. This product is widely applied in large and medium-sized CNC equipment with high resolution, such as SMT peripheral equipment, engraving machines, medium-sized CNC machine tools, computer embroidery machines, and packaging machinery.

5.Precautions:

A. The input voltage shall not exceed AC240V.

B. By default, the falling edge of the pulse signal is effective. For rising edge control, the internal parameters of the driver need to be set.

C. If the temperature of the driver exceeds 75 degrees, the driver will activate the overheat protection function. The fault indicator light ALM will light up. The fault indicator light ALM will go out only when the temperature of the driver drops to 50 degrees or below. The driver needs to be powered on again to resume operation. In case of overheat protection, please install a heat sink.

D. In case of overcurrent (load short circuit), the fault indicator light ALM will light up. Please check the motor wiring and other short circuit faults. After troubleshooting, the driver needs to be powered on again to resume operation. 

E.  To obtain the best performance, please select the stepper motor adapted by our company.