How can we get feedback from a nema 34 stepper motor?


How can we get feedback from a nema 34 stepper motor?

Usually we use CTs to check the status of a motor, but stepper motors are usually small dc motors, and hall effect sensors do not scale down well. The alternative method that is used in automation quite often is an end switch. Rotary actuators will often have sets of NO/NC contacts that change state at preset degrees, say 5 or 85 degrees. Some also offer an analog output back to your controller, so after an initial command of 10Vdc to the analog input terminals, the actuator will produce a steadily rising analog output back, depending on the current position of the actuator as it rotates to full.

So a series of cams on the stepper motor's output shaft and momentary roller switches placed at intervals around it will give you a set of binary shaft positions as feedback.

You want a more fluid, analog value? You can also set an IR transceiver aligned with a reflector on the output shaft, and then use a counter ic or accumulator logic to determine the number of rotations or speed of rotations. Get extra fancy, put a gradient in the IR reflective band along the axis of rotation, and now an IC can tell you current shaft position, speed of rotation, AND direction of rotation. This could be the basis for a very precise electronic differential transmission.

Cloudray Stepper Motor Series has set the standard for quality, reliability, and durability in stepping motors. The precision of our Torque Power motors is matched only by the dependability of their performance. All Torque Power motors are bi-directional and totally enclosed with permanently lubricated ball bearings for long-lasting, smooth operation.

High Torque, High Precision and Long life is Cloudray's core advantage
Low vibration,Low heating, No loss of step
Fast Response,Better Acceleration Performance
Thanks to a robust design they can be selected for the harshest environments. Precise, open-loop, speed and position control can be achieved with the application of full step, half step, or microstepping electronics.
Higher Resolution,Avoidance of Resonance Regions
Stepping angle is adjustable( rang in 18°±5%), 0.9 °stepper motor's stepping angle is smaller, fineness is higher and positioning is more accurate.Avoiding vibration,runs more smoothly and gets lower noise.
Sturdy structure, extremely long life
High quality materials including bearings and shaft made in Japan
Robust assembly, high speed range, and exceptional performance in even the harshest environments make Cloudray Stepper Motors the perfect solution for demanding positioning applications.
Short length and light weight allow them to be used in highly integrated systems
Cloudray stepper motor factory video
Stepper motor application
Cloudray stepper motor and Stepping Motor Driver are widely used in engraving machine, cutting plotter, textile machine, 3D printer, medical devices,stage lighting equipment, robot, CNC machine, music fountain and other industrial automatic equipment.

Leave a comment

All blog comments are checked prior to publishing
You have successfully subscribed!