The “NEMA 34” designation indicates a frame size of 3.4 inches (approximately 86.36 mm) square. The closed-loop system includes sensors that monitor the motor’s position and adjust its operation in real-time to maintain accuracy and performance.

nema 34 stepper motor closed loop
Definition of Open Loop and Closed Loop in Closed-Loop Motor and Open Loop Motor: Open Loop means that the output is not detected and the output is not corrected. The closed loop is to detect the output results and make corrections according to the differences between the output results and the theoretical requirements. If it is accurate, it must be that the open-loop accuracy is lower, because it does not consider the actual output results, while the closed-loop accuracy is higher because of the feedback.
◆ Closed-loop motor products cover 20~86 frame, installation size is fully compatible with the same type of stepper motor
Built-in incremental photoelectric encoder (2500 or 1000 lines optional)
◆ Large output torque and high speed
◆ Small heating, low noise, high efficiency
◆ Stable and fast stop at high speed, smooth operation without zero speed oscillation, low vibration noise
Quick response speed, suitable for frequent start and stop occasions