How Do You Control The Speed Of An AC Motor?
The most efficient and inexpensive method for controlling the speed of an AC motor is a frequency drive inverter. Besides helping you conserve electric power, the inverter offers precise speed control. Whether your motor is single phase or three phase, you can find an economical means for speed control. Install the frequency drive in the location specified by the manufacturer. Generally this will be an isolated area away from high heat, moisture and dust. Another concern is that the drive does not interfere with other electrical signaling devices such as two-way radios or wireless communications. Be sure to follow all grounding requirements as stated in the specifications. Improper grounding may cause the drive to malfunction. Use the wire strippers to remove three-quarters of an inch of the outer insulation from the incoming power wires and the wires leading to the motor. The incoming power wires will be connected to the terminals marked L1, L2 and L3. Single-phase wiring will use onl
