G-Tec Saturn, Руководство пользователя

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INTRODUCTION
UPSs can be connected in parallel to increase both load reliability and available output power. Up to 6 UPS units for three-phase
output UPSs models with the same power, or up to 4 UPS units for single-phase output UPSs models ) with the same power, can
be connected together in parallel.
The load applied to a multi-unit system in parallel can be greater than that sustainable by each single unit thanks to automatic
power distribution. Increased reliability can be obtained only on condition that the total power of the system with a dea
c tivated
unit remains greater than that requested. This condition is obtained by always adding a redundant unit.
The redundant unit is created by adding one UPS more than the minimum number of elements required to feed the load so that,
when a failing unit is automatically excluded, the correct supply continues uninterrupted. UPSs connected in parallel are co-
ordinated through a card that allows information interchange. Information is exchanged between UPSs through a cable connecting
them in ring form. This ring connection supplies a redundancy in the connecting cable, thus increasing system reliability. It also
allows insertion and disconnection when the UPS is on. The UPS control units communicate with each other through the data
bus. The cable transmits signals from the “Master” UPS to the other “Slave” units with an opto-isolator system in order to keep
the control systems electrically isolated from each other. The operating logic is that the first unit activated becomes the “Master”
UPS, taking control over the other “Slaves”. If the “Master” UPS fails, a “Slave” automatically obtains “Master” status.
ALL OPERATIONS DESCRIBED IN THIS MANUAL MUST BE PERFORMED BY QUALIFIED PERSONNEL
ONLY.
Our Company assumes no liability for damages caused by incorrect connections or operations not
contained in this manual.
INSTALLATION
“P
ARALLEL
S
YSTEM
”
CARD DIAGRAMS
DESCRIPTION
J1 System card internal connection
J2
Internal connection for latch-bypass
disconnecting circuit
J4
Communication line output (RJ45-
OUT)
J5 Communication line input (RJ45-IN)
SW1 Start or Continue switch
SW2
Communication bus terminal
resistance switch (setting depends on
number of UPSs in the system)
SW3
ON
IN Communication line ring
closure (default)
OFF
IN Communication line ring
opening
SW4
ON
OUT Communication line ring
closure (default)
OFF
OUT Communication line ring
opening
Y Led On = SW1 start position
G Led On = Card powered
12
12
SW4
SW3
CONT
START
SW2
Green Led
Yellow Led
SW1