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Copyright 2003 OutBack Power Systems, Inc. FX & VFX “E” Series Inverter/Charger System Installation & Programming Manual
19009 62
nd
Ave NE, Arlington WA 98223 USA
Tel 360 435 6030 Fax 360 435 6019 Rev 7.0 07/02/04
Page 19
FX SYSTEM CONFIGURATION - PARALLELED DUAL FX SYSTEM
Paralleled Dual FX System
The following diagram illustrates a typical paralleled FX installation using two FX’s. For this type of installation, use of OutBack Power
Systems PS2 system is recommended. The bypass kit for the PS2 system with two FX’s is an AC-IOB-30D using four CBI breakers
with a bypass mechanism. Please specify CBI breakers when ordering this bypass kit. The dual FX system will require two additional
CBI 30 amp breakers for the AC input. Additional breakers can be purchased and installed in the PS2AC if necessary. The AC wiring
from the AC source and to the AC loads must handle 60 amps AC or more. All other AC wiring must handle a capacity of 30 amps AC
or more. This type of FX system can continuously power 4-6KW of loads depending on which model is used. Connecting more power
than the continuous rating of the FX may cause breakers to trip or the FX to shut off its AC output. A HUB and a MATE must be
connected to stack these FX’s in parallel. A MATE (through the HUB if one is needed) must be connected to adjust any parameters or
to display any meters. Once the FX has been programmed using the MATE, the MATE can be disconnected. The programming will be
saved within the FX’s non-volatile memory even if the FX is completely shut down.
The diagram below represents parallel stacking of two FX’s.
Program the top FX as Master (1-2PH MASTER) and the lower FX as an OutBack L1 Slave (OB SLAVE L1)
NOTES:
The AC OUTPUT NEUTRAL IS NOT BONDED TO THE CHASSIS OR THE GROUND TERMINAL of the FX system. This connection
is to be made by the installer either in the AC service entrance or within the AC load distribution panel of the electrical system.
The AC input, AC output and DC terminals are isolated from the metal chassis of the FX. Proper grounding of these circuits and the
chassis of the FX is the responsibility of the installer.