2-2 Wiring •When using a regenerative braking unit, be sure to include a sequence whereby the power supply for the Inverter will be turned off in the event of abnormal overheating. Not doing so may result in fire. For a regenerative braking unit: Use the error contact output (MA, MB). Molded-case circuit breaker (MCCB) MC 2 Magnetic contactor (MC) Inverter 3G3JX R/L1 (L1) * S/L2 (L2) T/L3 (N/L3) Power supply Design MC XB OFF ON N/- P/+2 +1 MC SA AL1 N P AL2 DCL DC reactor MC P RB R1 R2 SA Regenerative braking unit * The items in parentheses indicate terminal symbols for 3G3JX-AE ††† .
Installing a Noise Filter on the Input Side •The Inverter's output uses high-speed switching, so noise may be transmitted from the Inverter to the power line, affecting peripheral devices. •It is recommended that a noise filter be installed on the input side to minimize noise transmission.
(Installing a noise filter on the input side can also reduce the noise from the power line to the Inverter.) 2-18 Name Model Specifications Regenerative braking unit 3G3AX-RBU21 3G3AX-RBU22 3/1-phase 200 V For general use (with built-in resistor) For heavy instantaneous regenerative power (with built-in resistor) 3G3AX-RBU41 3-phase 400 V For general use (with built-in resistor) General EMC-conforming 3G3AX-NFI 3G3AX-EFI