1.1 Requirements for use environment Normal working environment temperature: 5℃-45℃ Normal working environment humidity: 10% 90% (non-condensing) Rated voltage: 220V±10% 50(60)HZ Working environment: The working environment of the control system should not contain flammable, explosive, toxic, water mist or corrosive media Instantaneous power failure: under rated voltage, less than 20ms System ground: less than 4Ω 1.2 Product Specifications Motor output power (Power): 550W, 750W Sewing Speed: 100r/min-4500r/min can be set Speed regulation method: infinitely variable speed, can also automatically run at a fixed speed Solenoid Signal Output Port: 4 channels, including thread sweeping, thread trimming, presser foot lifter, and suction electromagnet Fault protection: over current, short circuit, stalled rotor, etc. Stall protection judgment time: 3 seconds