ALD550 high-performance vector inverter is specially developed for fans, water pumps, assembly lines, machine tools, small air compressors and conveying machinery. It is a general heavy-duty frequency converter. With strong overall compatibility, it matches three-phase asynchronous motors and features stable voltage regulation and speed adjustment. It complies with industrial voltage standards of many countries at home and overseas, widely adopted for energy-saving renovation and original equipment matching in small and medium-sized factories.
1. High starting torque: 150% rated starting torque at 0.5Hz under sensorless vector control heavy machinery
2. Ultra-fast torque response: Torque response less than 20ms under sensorless vector control
3. Stall prevention protection: Overvoltage stall and overcurrent stall functions are equipped, automatically adjust output frequency during acceleration and deceleration to reduce tripping failures
4. Torque limit for machinery protection: Set maximum torque limit to prevent mechanical damage caused by load impact
5. Fast current limiting function: When sudden load surge or grid interference generates large current, rapidly clamp current within protection threshold to avoid frequent overcurrent alarms
1. Virtual DI/DO terminals: Support 5 groups of virtual I/O terminals; status of virtual DI can be set via
2. High-precision multi-channel analog ports: Each AI1~AI3 supports 4-point self-defined calibration curve with 20mV calibration accuracy; AI3 is isolated input port compatible with PT100/PT1000 motor temperature sensors; AO output supports on-site linear calibration of zero drift and gain
3. Graded overheat protection for motor: After connecting temperature sensor, output reminder signal when temperature exceeds warning threshold, trigger fault stop when temperature exceeds protection threshold
4. Momentary power loss ride-through: When instantaneous power failure or voltage drop occurs, rely on load feedback energy to compensate DC bus voltage and maintain continuous operation for a short time
5. Open-loop vector control for synchronous motors: Drive PMSM without encoder, reduce supporting cost of synchronous motor systems
6. Dual parameter backup & restore: Support restoring factory default parameters and user self-saved parameters, avoid permanent parameter loss caused by wrong commissioning operation
1. Self-developed RS485 field bus protocol built-in, support bus communication expansion to connect all kinds of peripheral industrial control equipment
2. Supporting upper computer software: Realize batch upload and download of inverter parameters; built-in real-time oscilloscope for visual waveform observation to facilitate troubleshooting and commissioning
1. Independent air duct cooling design: Improve overall protection performance, adapt to harsh working conditions with dust and humidity, extend service life; match flange wall-through installation to optimize heat dissipation inside control cabinet
2. Multiple installation modes (based on G-type general model): 0.75kW~160kW support wall-mounted and flange wall-through installation; 200kW~400kW adopt floor-standing installation
3. Detachable cooling fan: Easy disassembly and assembly for daily dust cleaning and spare parts replacement, reduce maintenance difficulty
4. Wide voltage hardware design: Tolerate ±15% grid voltage fluctuation, suitable for overseas and remote factory areas with unstable power supply
Models 0.75kW~18.5kW are standard equipped with built-in braking unit; 22kW~37kW models support optional built-in braking unit. Dynamic braking can be realized only by connecting matched external braking resistor, no extra external braking cabinet required to save installation space.
