EM500 Open-Loop Vector Control Inverter User Manual S R U V W T 风机电源板 控制回路 电源 Fan Power Panel Power Supply Control Circuit 冷却风扇 Cooling Fan c) EM500-022G/030P-3B~ EM500-075G/090P-3B d) EM500-022G/030P-3~EM500-200G/220P-3 e) EM500-220G/250P-3~ EM500-560G/630P-3 Figure 3-3 Internal Main Circuit of Inverter 3.2.4Standard Wiring of Main Circuit The standard wiring of the main circuit of EM500 inverter is shown in Figure 3–4. EM500-0R7-3B - EM500-018-3B EM500-022-3 - EM500-560-3 制动电阻 （选配件） Braking resistor (optional) 制动电阻（选配件） Braking resistor (optional) PB 制动单元（选配件 ） Braking unit (optional) R S U V M R S U V M W T T W Figure 3-4 Standard Wiring of Main Circuit 39