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4 Parallel Setting
Terminal resistor setting
Each UPS unit is equipped with a terminal resistor "S1" placed on the rear panel (Figure 7) besides
the RJ45 connectors.
• Set the terminal resistor according to the configuration shown in the Table 2
PARALLEL UNITS
2 UNITS
3 UNITS
4 UNITS
Table 2
CAUTION
Only 2 UPS units must have the terminal resistor in ON position. A wrong Terminal Resistor
setting will cause unpredictable failure or UPS burned out. Eventual error can't be detected
automatically by the UPS.
Parallel Function Enable and ID Numbers setting
• Ensure that all the circuit breakers at the input and output are set to off position.
• Turn on the AC input of the UPS to be configured
Turn on only the input breakers CBi connected to the UPS to be checked, and the utility breakers
CB1 on the rear panel of the UPS itself.
DO NOT TURN ON THE INVERTER !
• Enter the UPS in Setup Mode (See single unit check)
• Set the UPS ID . Each UPS must have a different ID number.
CAUTION
One of the UPS must have the "Id01". This UPS will be the default master unit of the parallel
system.
TERMINAL RESISTOR STATUSOUTPUT (CBo)
UPS1
UPS2
ON
ON
ON
Daker DK 4.5-10 kVA
UPS3
ON
OFF
ON
OFF
OFF
UPS4
--
--
--
ON
11
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