Omron SYSDRIVE 3G3MV

2-27
D Installing a Noise Filter on the Power Supply Side
The Inverter’s outputs utilize high-speed switching, so noise may be transmitted from
the Inverter to the power line and adversely affect other devices in the vicinity. It is rec-
ommended that a Noise Filter be installed at the Power Supply to minimize this noise
transmission.Conversely,noisecanalsobereducedfromthepowerlinetotheInverter.
Wiring Example
Power
supply
3G3MV-PFI
Noise
Filter
3G3MV
SYSDRIVE
Programmable
Controller
Other controllers
Note Use a special-purpose Noise Filter for the SYSDRIVE 3G3MV. A general pur-
pose noise filter will be less effective and may not reduce noise.
Please, use the noise filters as explained in Chapter 9-2.
H Wiring on the Output Side of the Main Circuit
D Connecting the Terminal Block to the Load
Connect output terminals U/T1, V/T2, and W/T3 to motor lead wires U, V, and W.
Check that the motor rotatesforward with the forward command.Forward means shaft
of the AC motor rotates in CCW (Counter Clock Wise), if you look from shaft to motor
end.Switchoveranytwooftheoutputterminalstoeachotherandreconnectifthemotor
rotates in reverse with the forward command.
D Never Connect a Power Supply to Output Terminals
Never connect a power supply to output terminals U/T1, V/T2, or W/T3.
Ifvoltageisappliedtotheoutputterminals,theinternalcircuitoftheInverterwillbedam-
aged.
D Never Short or Ground Output Terminals
Iftheoutputterminalsaretouchedwithbarehandsortheoutputwirescomeintocontact
withtheInvertercasing,anelectricshockorgroundingwilloccur.Thisisextremelyhaz-
ardous.
Also, be careful not to short the output wires.
Design Chapter 2