Immediate shortcircuit protection activated on fault to safeguard the drive and connected equipment. Maximum output frequency: 0400 Hz, enabling a wide range of motor speeds for diverse applications. External controller compatibility: can be connected to an external controller to realize speed regulation control via 05V/010V analog input and 020mA current signal input. Multifunction capabilities: frequency converter with multifunction relay transmission, function, pressure watersupply function. Quick response and strong lowspeed performance for smooth and reliable operation. Internal protections: the product includes protective functions such as under, over, overcurrent, and overheat protection, among others. Practical applications: Conveyor systems in manufacturing lines requiring precise speed control via external analog or current signals. Water pumping or pressurecontrolled water supply setups where speed is adjusted through 05/010 V or 020 mA control signals. Machinery and automation tasks needing fast response and reliable protection during variable load conditions. Key attributes at a glance: flexible control through analog or current inputs, wide speed range up to 400 Hz, protective features for safe operation, and additional relaybased or functionspecific capabilities for integrated automation.