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communication of the units switched in parallel takes place
via the 25-pin parallel operation cable(s) included in the scope
of delivery.
For this purpose, first remove the parallel port covers
(no. 5, p. 26/27) and connect the UPS units with each other
with one parallel operation cable each. Use one
parallel
operation cable for 2 units and two
parallel operation cables for
3 units (do not create a ring structure!).
(Communicative) parallel operating connection
... for 2 units: ... for 3 units:
After connecting the parallel operation cables, fasten the
previously removed parallel port covers. Turn these by 180°
so that the slot of the cover is facing downwards.
The hardware-related installation is now complete.
9.3 Operation of the UPS in a parallel system
The start-up process is uncomplicated, does not require any
prior knowledge and is basically oriented to the procedure
described in chapter 6. If you have obtained the parallel
operation board from AEG Power Solutions, you can find
further special instructions there. The displays in the parallel
system function the same way as described for the individual
UPS units in chapter 8.
9.3.1 Start-Up
1. Make sure that all connections have been made
according to the installation instructions.
2. Make sure that all loads are switched off.
3. Make sure that all “maintenance switch” manual
bypass switches (no. 3, p. 26/27) on the back of