Outback Power FX and VFX Series Programming Manual

5. 3-Phase

• Three—and only three— FXs are connected, one to each of three 120 VAC output legs that produce

208 VAC between any two legs of the system.

• The HUB requires a jumper between the two Slave FXs for this stacking to function (see HUB

Manual).

• The AC input source (generator or grid) must be a 120 VAC/208VAC 3-phase source.

Stacking and Assigning FX Status

Use the MATE to establish the order or hierarchy of all the system FXs by designating each as one of

the following:

• 1-2ph Master (OutBack Parallel, OutBack Series, or Classic Series stacking)

• Classic Slave (Classic Series stacking)

• OB (OutBack) Slave L1 (OutBack Parallel, OutBack Series, or OutBack Series/Parallel stacking)

• OB (OutBack) Slave L2 (OutBack Parallel, OutBack Series, or OutBack Series/Parallel stacking)

• 3ph Master (3-Phase stacking)

• 3ph Slave (3-Phase stacking)

1. 1-2ph Master

• This is the default ranking of every FX. It applies to one-phase and two-phase systems.

• One Master FX is established for every multiple FX system.

*A&B

A&C

B&C

Any two

legs*

208 VAC

6kW

3 kW 120 VAC

LOAD

3-phase, all

three legs,

9kW

3 kW 120 VAC

Phase B

120 VAC

3kW

Phase A

120 VAC

3kW

Phase C

120 VAC

3kW