Aug 02, 2019
CAUTION: WE HIGHLY RECOMMEND YOU HAVE A LICENSED ELECTRICIAN, OR SOMEONE CERTIFIED TO WIRE YOUR VFD AND MOTOR.
· Look at the nameplate on your motor and make sure your VFD is sized correctly.
· How many full load amps does your motor draw?
· Is your VFD rated for the amount of amps your motor draws?
· How many volts does my motor require (460V or 230V)?
· Locate your breaker panel
· Remove the dead front and the panel cover.
· Install your 3 pole amp rated, volt rated, circuit breaker
· If you can kill power to the breaker panel before you work inside it, we recommend you do so. If you are unable to do so make sure you wear the proper safety equipment. (leather gloves, safety glasses, arch fault gear)
· Make Sure your power wire is rated for the Full Load Amps (14 gage wiring up to 15 amps, 12 gage up to 20 amps, 10 gage wire up to 30 amps, 8 gage wire up to 40 amps, 6 gage wire up to 50 amps, 4 gage wire up to 70 amps, 2 gage wire up to 100 amps and so on).
· If your power wires are #6 up to #2 your ground wire can be #10. For power wires larger than #2 see chart for proper ground wire sizing.
· Use appropriate wiring method in determining your raceway for wires. Options are: Run wiring in EMT Conduit, Rigid Conduit, Flexible metal conduit (Flex), Metal Clad Cable (MC), NMB Cable (Romex) etc.
· Use the same gage wires as you did from the circuit breaker to the VFD
· Use proper raceway as you see fit
· Land wires in conduit box on motor
· Use the wiring diagram on your motor to determine the correct wiring method
· Most 3 phase motors are duel voltage meaning they will accept 480/460 volts or 240/208 VAC.
· The way you make up the motor will be dependent upon the voltage. Be sure to make it up correctly depending on the amount of voltage you are providing.
· Use wire nuts to tie your power wires to the proper wires as shown on the motor name plate.
· Pull on wire nuts to make sure the wires are spliced correctly and tight. If a wire slips out of the wire nut you know you have a problem and need to redo it.
· Fasten conduit box cover to motor
· Terminate your load wires (Wires going to the motor) to the terminals U, V, W.
· Terminate your line wires (Wires coming from the circuit breaker) to Terminals R/L1, S/L2, T/L3
· If you’d like you can use crimp terminals. You can also just put a small hook shape in your stripped wire and land it under the screws.
· Land your ground wires under the green ground screw.
· Land your 3 power wires to the circuit breaker
· Land your ground wire to the ground bus bar
· Put the dead front and panel cover back
· Turn the circuit breaker on
· Program your VFD to your preferred parameters (See also Programing your VFD).
· Use your preferred starting method (i.e. start/stop buttons, Keypad on VFD) to start the motor
· Enjoy the speed control you have with your VFD