Why are motors available with 4/6 or 8 connection leads?
Support » FAQ » Stepper motors
The number of leads on a motor says something about the operation in which or with which positioning control this motor can be operated - unipolar, bipolar parallel, bipolar serial or with one winding half. The possible modes of stepper motors with 8 leads are extremely diverse as they are suitable for all types of positioning control and, hence, can be deployed very flexibly for the most different applications. Due to their flexible wiring the 8-lead motors are frequently also available ex warehouse.
2 or 4-phase stepper motors with 8 connection leads can be operated in unipolar as well as in bipolar control (parallel, serial, one half of the winding. (For the difference between unipolar and bipolar, see Animation link.)
The stepper motor with 6 connection leads can be operated in unipolar as well as in bipolar serial or in bipolar one winding half. In the case of open middle tappings, both connectors must be separately insulated. (Animation link)
2-phase stepper motors with 4 connection leads can only be operated in bipolar control. Due to the lower performance yield (only a half of the copper of the windings is used), Nanotec does not offer any unipolar final output stages.
