OMD10078 rev F
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5.2.15 “Load-Sync-Bus” kit for single unit
The “Load-Sync-Bus” function for single unit is available only for two UPSs. This is a
special operating mode which allows to have the UPS outputs synchronized in the
different operating statuses. With regard to the load management, the UPS units
behave as if they were single units independent of each other. So NEVER CONNECT
THEIR OUTPUTS TOGETHER.
If one or more UPS units have the emergency line available, which must be the
same for all the systems, the UPS configured with the lowest position will synchronize
with the emergency line. All the other UPS units will synchronize with such UPS, so they
will be synchronized in their turn with the emergency line whether it is present on the
UPS or not.
The emergency line will be available as an alternative power source only for the
systems where it is present.
Picture 40 – Example of UPS units in Sync-Load configuration – single configuration