| 摘要 |
<p>A variable speed chain hoist has the variable speed control integrated into the housing of the chain hoist and a user control for varying the speed of the hoist that is integrated into the pendant controller. The speed control may include an inverter connected to the motor of the hoist. The user speed control may include a rotary knob or a slider connected to a potentiometer and integrated into the pendant control to vary a voltage signal supplied to the inverter.</p> |
