6 Wire Stepper Motor Sequence

The bipolar series connections are shown here.

6 wire stepper motor sequence. Speaking specifically of holding torque the datasheet shows that if you turn the motor on a unipolar driver it loses 30 of the torque. This shows that the stepper motor in general starts at a low rpm and the torque decreases as the speed increases. The buildbotics cnc controller does not support unipolar motors. Two wire leads connect to either end of one phase with a third wire connected to the center point between the coils as shown in figure 1.

6 wire motor this motor only joins the common wires of 2 paired phases. A 6 wire stepper motor is similar to a 4 wire configuration with the added feature of a common tap placed between either end of each phase as shown in figure 2. This wiring configuration is best suited for applications requiring high torque at relatively low speeds. If you can see the led pattern is correct then just measure the resistance of the windings.

These two wires can be joined to create a 5 wire unipolar motor. If your stepper motor has 4 wires it is a bipolar stepper motor. A typical 6 wire stepper motor connection diagram is shown in figure 1. 6 wire motors have two center tapped coils and expose the ends of the coils and the center tapped conductor of the coil.

Or you just can ignore them and treat it like a bipolar motor. Since coils a and b on the diagram above are not connected the resistance between leads a1 and b1 or between a1 and b2 will be infinite. In the full step sequence two coils are energized at the same time and motor shaft rotates. Unipolar configuration 6 wire motors have three wires per phase.

Bipolar stepper motors have two windings which are not connected to each other wired internally like this. The order in which coils has to be energized is given in the table bel ow. As a unipolar motor. Namely full step sequence half step sequence full step sequence.

Stepper motors with these center taps are often referred to as unipolar motors. 6 wire motors can be configured as either unipolar or bipolar series motors. 0110 6 0011 3 etc etc. It can be driven in several ways.

Step sequence of stepper motor stepper motors can be driven in two different patterns or sqeunces. As already said we will talk mostly on unipolar stepper motors which is most common type of stepper motor available in the market a simple example of 6 lead step motor is given below and in 5 lead step motor wire 5 and 6 are joined together to make 1 wire as common. This third wire is commonly referred to. This is a datasheet of a nema 17 6 wire which can be connected as bipolar or as unipolar.