User Manual EM303B General Purpose Inverter (d) Main Circuit Terminal Block of EM303B -220~400 Figure3-2 Main Circuit Terminal Block Remarks: 1. EM303B -090 or above: Power input terminals R, S, and T are on the top, and power output terminals are at the bottom of the inverter. 2. EM303B -220 or above: There are 2 wiring screws for each terminal. 3.2.2 Main Circuit Terminal Functions The main circuit terminal functions of EM303B are listed in Table 3-1. Please wire the terminals correctly as per corresponding function. Table 3-1 Main Circuit Terminal Functions 24 Inverter Model No.
W W 1 W2 W3 EM303B-090～132 33 - - - EM303B-160～200 39 - - - EM303B-220～280 88 2 2 88 22 EM303B-315～400 104 2 6 101 23 Terminal Fu nction AC R、S、T (Te power input terminals for connecting to 3-phase AC power. rminal L1, L2 for AC220V 1-phase input inverter) U、V、W Inv erter AC output terminals for connecting to 3-phase induction motor. Pos ext itive and negative terminals of internal DC bus for connecting to ernal braking unit. Co 、PB the nnecting terminals of braking resistor, one end connected to and other to PB. Gro unding terminals