SECTION 7 SERIES OPERATION
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PART 5: SERIES SYSTEM OPERATION
Invert Mode
The two inverter•chargers will operate strictly as a pair in Invert mode. Before
each cycle of AC output, the two units confer over the sync cable to verify that
the other unit has no errors and is ready to put out the next cycle. A number of
conditions must be met for the pair of inverter•chargers to invert:
• Invert mode must be enabled on both displays.
• No errors can be present in either unit.
• The sync cable must be good.
• One (or both) sides of the AC input (shorepower) must be outside the
transfer limits you have configured (e.g., low voltage).
If shorepower becomes valid on both phases when the PROsine is inverting,
both units will synchronize to it and, as a pair, transfer to shorepower. Any
transfers or shutdowns, etc. will occur on both phases within one cycle of each
other.
Charge Mode
Both phases of the shorepower must be “good” before either unit will transfer
to shorepower and be able to charge. Therefore neither unit will charge unless
both phases of shorepower are good. However it is not necessary that both
units have Charge mode enabled for one to operate.
NOTE
If both inverter•chargers are connected to one battery bank and are configured as
primary/secondary, the charge operation is somewhat different than normal:
• The primary charger performs the entire charge cycle.
• The secondary charger completes the Bulk stage only, allowing the primary
charger to accurately finish the charging cycle.
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