AC70T Hoist Special Inverter Overview

AC70T hoisting special frequency inverter is specially designed for the application of the industry. It has perfect functions, good protection effect (resistance to salt spray corrosion), and excellent performance, ensuring the safety, reliability and efficiency of hoisting machinery. It is suitable for the drive of lifting, pitching, trolley, trolley, slewing, luffing, etc. in industries such as port machinery, ship machinery, construction machinery, mining machinery, cranes, gantry cranes, electric hoists, cranes and hoists.


  1. Light load and high speed.
  2. Zero-speed torque maintenance.
  3. Synchronous control of multiple motors.
  4. Anti-collision function.


Stable operation at low frequency and large torque

0.5Hz/150% rated torque output smoothly, to ensure that the lifting equipment runs smoothly during starting, rising and falling.

Excellent current suppression and bus voltage suppression

The current suppression function can avoid frequent over-current alarms of the inverter. When the current exceeds the current protection point, the overcurrent suppression function can continuously limit the current within the current protection point, thereby protecting the safety of the equipment and avoiding overcurrent alarms caused by sudden load or interference.

The overvoltage suppression function can avoid the overvoltage alarm of the inverter during acceleration and deceleration. When the inverter bus voltage reaches or exceeds the protection point during acceleration and deceleration, the overvoltage suppression function can automatically adjust the operating frequency to suppress the rise of the bus voltage, thereby protecting the safety of the equipment. Avoid the overvoltage alarm caused by the increase of the bus voltage of the inverter.

Wide speed range

The output frequency range is 0-320Hz, which meets the requirements of light load notification, heavy load and low speed of lifting equipment, and improves the efficiency of the equipment.

Super overload capacity

150% rated current for 1 minute, 180% rated current for 10 seconds, and 200% rated current for 0.5 seconds.

Stall protection function (closed loop mode)

When it is detected that the actual speed exceeds 115% of the rated speed during operation, the inverter quickly sends out a brake signal to realize emergency braking.

Dedicated brake control logic

Control the brake (brake) of the lifting equipment to open and close in a reasonable time sequence to ensure the safety and reliability of the system.

Wide voltage input range

Automatic voltage stabilization: to ensure that when the grid voltage drops, the output can still meet the torque output requirements of the lifting equipment, and the allowable input voltage fluctuation range is ± 20%.

Industrial Applications for AC70T Hoist Special Inverter

Applications:Port machinery, ship machinery, construction machinery, mining machinery, cranes, gantry cranes, electric hoists, cranes and hoists, etc.

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