| 摘要 |
A material conveyance device that has an inverter converting a frequency of an alternating-current source and a suction air source having an electric motor driven by the inverter and pneumatically conveys a material by the suction air source through a pipe for conveying the material, includes: a physical quantity detector that detects a physical quantity related to an output of the inverter; and a controller that controls an air volume or an air speed by the suction air source based on the physical quantity detected by the physical quantity detector. |
