Arrangement of Main Power Circuit Terminals The arrangement of terminals on the inverter main circuit terminal block is shown below. Terminal symbol Terminal name Description R/L1 L1 Main power supply input terminal Connect the DC input power supply. For single-phase 200-V type Inverters (Model: 3G3MX2-AB£££-V2), connect these to the L1 and N terminals, respectively. S/L2 T/L3 N U/T1 Inverter output terminal Connect a 3-phase motor. V/T2 W/T3 +1 DC reactor connection terminal Remove the short-circuit bar between the terminals +1 and P/+2 (for switching the inverter’s built-in filter function) and connect an optional DC reactor.
P/+2 P/+2 Braking resistor connection terminal Connect an optional braking resistor (if a braking torque is required). RB P/+2 Regenerative braking unit connection terminal Connect optional regenerative braking units (if a braking torque is required and that produced by the built-in braking circuit is insuffi- cient). N/- G Ground terminal This is the ground terminal. Connect this terminal to the ground. 200-V class should be connected under type-D grounding conditions; 400-V class should be connected under type-C grounding conditions.
For 200-V class models with a capacity of 3.7 kW or lower and 400-V class models with a capacity of 4.0 kW or lower, the ground terminal is located on the cooling fin.