Brief description：

Digital I/O Expansion board is used to expand the digital input and output terminals. SL-3X2Y、SL-5X、SL-5Y provide 3 channels digital input terminals, 2channels digital output terminals, 5 channels digital input terminals, 5 channels digital output terminals.

Input side AC reactor can inhibit ultraharmonics of inverter input current and improve the input side power factor.
Out put side AC reactor can reduce the inverter output harmonics; prevent the motor insulation out of damage; reduce the common-mode interference in output side and reduce the motor shaft current.