There are two common systems of driving a stepper motor: constant current drive and constant voltage drive. The circuitry for the constant voltage drive is simpler, but it is relatively more difficult to achieve torque performance at high speeds. The constant current drive, on the other hand, is now the most commonly used drive method, …
Problem: Intermittent or erratic stepper motor or stepper driver function.Solution: This is the most common cause of failure and one of the most difficult to detect. Start by checking to insure that all connections are tight between the stepper motor and the stepper driver and controllers. Evidence of discoloration at the terminals / connections, may …
A stepper motor is equipped with a permanent magnet rotor and a stator with at least two windings. When the rotor is magnetically aligned with the stator winding, the second winding will be driven. The two windings turn on and off alternately, which will cause the motor to lock in the desired step position. The …
Stepper motors and stepper-based linear actuators are often selected for open-loop motion control devices and equipment. These can be found in a wide range of products and systems such as: laboratory equipment, medical devices, vision systems, analytical equipment, office products, semiconductor equipment, aerospace, communications systems and light industrial equipment. Two Basic Types of Stepper Motor …
Bipolar stepper motor drivers For operating 4 or 8 lead bipolar stepper motors and stepper-based linear actuators. Unipolar stepper motor drivers For operating 6 or 8 lead unipolar steppers and actuators (typically L/R type drives). Non-programmable stepper drivers Requiring digital “pulse” and “direction” inputs from a controller (and some include an “output enable” digital input). …
A stepper motor driver receives low-level signals from a controller/indexer and converts them into electrical winding currents to run a stepper motor. One step pulse into the driver is required for every step of the motor shaft. In full-step mode, with a standard 200 step motor it takes 200 step pulses to complete one revolution; …
