Delta Electronics VFD-G manual Main Circuit Connection, Terminal Symbol

Chapter 2 Installation and Wiring

2.3 Main Circuit Connection

For 460V series, 20hp and below

			DC Reactor	Brak e Resistor
			(Opti onal)
				(O pti onal)
			Jumper		BR
	NFB	MC	+1 +2/B1		B2	-
R/L1			R/L1			U/T1
				VFD-G
S/L2			S/L2			V/T2
T/L3	NFB		T/L3			W/T3

Motor

IM 3~

For 460V series, 25hp and above

DC Reactor (O pti onal)

Jumper

	Brak e
V FDB B1	Unit (Opti onal)
P N B2	Brak e
	Resistor
	(O pti onal)

	NFB	MC	+1	+2	-
R/L1			R/L1		U/T1
				VFD-G
S/L2			S/L2		V/T2
T/L3	NFB		T/L3		W/T3

Motor

IM 3~

Terminal Symbol

R/L1, S/L2, T/L3

U/T1, V/T2, W/T3

+1, +2

+2/B1~B2

+2~ -, +2/B1~ -

Explanation of Terminal Function

AC line input terminals

AC drive output terminals motor connections Connections for DC Link Reactor (optional) Connections for Braking Resistor (optional) Connections for External Braking Unit (VFDB series) Earth Ground

2-8 Revision July 2008, EG03, SW V1.06