Method for Controlling the Rotation Direction of an A6 Servo Motor Using Analog Signals

The A6-RS series servo motors support analog control. We have provided a simple instructional video for your reference:

https://help.stepperonline.com/en/article/practical-demonstration-of-multi-speed-analog-speed-control-functions-on-a6-rs-series-ac-servo-motor-12kcdx0/

In the video, we demonstrate how to easily control the acceleration, deceleration, and speed of the servo motor using analog signals from a potentiometer. But how can the rotation direction be controlled in real-time? We recommend the following solution: use an external switch to control the direction via one of the servo motor's DI ports. The specific steps are as follows:

Select any DI function port and set its function to 17 (Speed Command Direction). The A6-RS series is configured with 8 DI input ports; you can choose any one. For example, let's use DI6 here.

Locate the pin positions for your chosen DI port (e.g., DI6) and the DI common terminal (COM) on the driver's CN1 connector. Referring to the diagram below, find the corresponding pins, for instance, PIN14 (for DI6) and PIN32 (for COM).

(Note: Since we are using the driver's internal 24V power supply for the DI ports, it is also necessary to short-circuit PIN17 and PIN11.)

Connect the positive terminal of your switch to PIN32 (COM) and the negative terminal to PIN14 (DI6).

This completes the wiring for direction control. When the servo motor is running, you can arbitrarily switch the direction by turning the external switch on or off.

Updated on: 29/09/2025

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