User Manual EM303B General Purpose Inverter 3.2 Wiring Main Circuit Terminals 3.2.1 Main Circuit Terminal Block The main circuit terminals of EM303B are located on the control PCBA: 3-phase AC input terminals: R,S,T Grounding terminal: DC bus terminal: 、 Wiring terminal for braking resistor: PB Output terminals of inverter(For connecting to motor): U, V, W See Figure 3-2 for main circuit terminal block. PB + ○ ○ - R S T U V W ○ (a) Main Circuit Terminal Block of EM303B-015 or below T S R W V U (b) Main Circuit Terminal Block of EM303B -018 ～ 075 (c) Main Circuit Terminal Block of EM303B -090~200 23