19
ONLY PEOPLE WHICH HAVE BEEN
TRAINED BY SERVICE TECHNICIANS OF
THE MANUFACTURER OR HIS CERTIFIED
SERVICE PARTNERS ARE ALLOWED TO
START UP AND COMMISSIONING THE UPS
SYSTEM.
The control and monitoring communication for
the parallel UPS units are secured by using a
ring-bus communication. The ring-bus technique
loops back the parallel communication cable from
the last frame in the system. This introduces an
alternative communication path in case one cable
in between two UPS units is disconnected for
whatever reason.
—
3.3.3-1
—
3.3.3-1: Ring
communication for
parallel UPS units
3.3.3
Parallel UPS configuration
The UPS system consisting of parallel UPS units requires:
• Master UPS unit equipped with system graphical display, N x UPS modules (N > 0 and < 6) and
parallel cable kit (5 mts).
• N parallel UPS unit equipped with parallel cable kit (N < 6)
FRAME 1
FRAME 2
…
FRAME 5
FRAME 6
System graphical display
•
Parallel Cable Kit
•
•
•
•
3 S Y S T EM D E S C R I P T I O N
