Outback Power Systems VFX Series Programming Manual - Manual (Page 27)

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2. Classic Slave
• Classic Slave is the designation of the second FX in a two-inverter, split-phase system that produces
240 VAC without using an FW-X240 Auto Transformer.
• This FX is plugged into Port 02 of the HUB.
OB Slave L1 and OB Slave L2 designations are used in OutBack Parallel Stacking or OutBack Series/
Parallel stacking
3. OB Slave L1
• In an OutBack Parallel single-phase system, all the Slave FXs on a single 120 VAC leg are designated
OB Slave L1.
• In an OutBack Series split-phase system, which will include an FW-X240 or PSX-240 Auto Transformer,
any FX that runs in parallel to the Master FX is designated OB Slave L1. These FXs must be plugged
into the lowest HUB Ports.
• The OB Slave L1 Stacking is typically used for an entirely off -grid application such as a cabin that
does not require 240 volts.
4. OB Slave L2
• In an OutBack Series split-phase system, any Slave FX that runs in series with the Master FX is
designated OB Slave L2.
5. 3ph Master
• In 3-phase stacking, the Master FX is designated as 3ph Master.
3ph Master and 3ph Slave designation are used in OutBack 3-phase stacking.
6. 3ph Slave
• I n 3 - p h a s e s t a c k i n g, e a c h o f t h e S l ave F X s, w h i c h s h o u l d b e p l u g g e d i n to H U B
Po r t s 0 2 ( p h a s e B ) a n d 0 3 ( p h a s e C ) re s p e c t i ve l y, i s d e s i gn a te d a s 3 p h S l ave.
• W h e n t h e H U B j u m p e r i s s e t b e t we e n Po r t 0 2 a n d Po r t 0 3 , t h e H U B i d e n t i f i e s a
p h a s e fo r e a c h S l ave F X .
Stacking Phases/Assigning FX Status (in order):
1. 1-2ph Master*
2. Classic Slave
3. OB Slave L1
4. OB Slave L-2
5. 3ph Master
6. 3ph Slave *GTVX and GVFX models show “Master” on the screen