AH21 series simple servo controller is a product produced by PowerMax. This series of products adopts a vector control method without current sensor, which is better than traditional BLDC control method, with lower noise and vibration. AH21 can accurately realize the stop needle, the automation level is higher. The sewing equipment with AH21 controller can achieve high efficiency and energy saving (according to the sewing institute test results: energy saving exceeds 50%).
The AH21 series is a simple servo controller designed for industrial flat‑seam equipment. It uses a sensor‑less vector control method with permanent‑magnet synchronous motors, offering low noise, low vibration and energy savings of over 50% compared with traditional clutch or electronic motors.
The manual includes a block diagram of the system, a table of features and specifications for each model variant, mechanical dimensions, mounting details, and a list of compatible head‑unit sensor adapters for various machine brands such as Juki, Brother and Mitsubishi. This manual is written in Chinese.
| Motor Type | PMSM |
|---|---|
| Voltage Range | AC 220±20% V 50/60HZ |
| Output Power | 550W |
| Maximum Speed | 5000rpm |
| Maximum Torque | 3Nm |
| Overload Protection | Yes |
| Weight | 7Kg |
| Controller Dimensions | 220 mm × 160 mm × 80 mm |
It uses a permanent‑magnet synchronous motor (PMSM).
Yes, overload protection is listed among its features.
The controller measures 220 mm × 160 mm × 80 mm.