The input signal terminal of the stepper motor driver adopts optocoupler isolation technology. For the step pulse signal, some of the isolation side optocoupler diodes are from the off to the conduction step (ie, the pulse signal input from the negative terminal of the diode is reduced by bfvg along the effective edge). ). Some are isolated-side optocouplers that are active from turn-on to turn-off (ie, the rising edge of the pulse signal input from the negative terminal of the diode). When it is indicated that the motor drive pulse signal is valid on the rising edge or the falling edge, the pulse signal input from the negative side of the isolation side photocoupler diode is taken as the standard.
Some of the motor driver input signals are independent, and some are internally amp-amplified. Therefore, some of the outward lead wires are 4 and some are 3 (only the pulse and direction signals are counted),
as shown in the figure:
Each motor driver interface of the RDC644XG series motherboard provides a direction signal, a pulse signal, and a 5V signal for common male connection. The pulse signal and direction signal are both OC outputs.
Moreover, the RDC644XG only supports the common anode connection method, and cannot be connected in the common cathode or differential mode. Among them, the polarity of the direction signal can be set by the PC, and the pulse signal is valid for the rising edge or the falling edge, and can also be set by the PC.
The wiring diagram of the RDC6442 controller and driver is as follows:
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