12
UDD-SD-112/ Release Date: 25.12.2014/Rev No: 1 /Rev. Date: 18.05.2015
＞Installation procedure:
① Install parallel wires. Two UPS to form an UPS parallel system, in order to ensure the
reliability of the parallel system, there is only one way to wire two UPS, use two parallel wires to
connect two UPS like the diagram showing below, connection looks like a circle. If three or more
than three UPS are needed, the connection is similar, you can refer to the diagram as below. How
many UPS unit, how many parallel wires you need.
Parallel system of two UPS wiring
Parallel system of three UPS wiring
Caution
For three UPS parallel system or more than three unites system type, please remove the short
pin CN3 on the parallel card as following pictures, Only keep the first unit and the last unit shot
pin(CN3) connected and remove the rest ones. Open the UPS cover, find the parallel card, it’s
installed on the rear panel. Take off the short pin CN3, then screw the cover back. It’s advisable
to contact to local dealer to operate, if you have to operate by yourself, please be sure that you
have cut off all the electrical connection, be careful the electric shocks from the UPS inside.
DO NOT OPEN EXCEPT
QUALIFIED TECHNICIAN
DO NOT OPEN EXCEPT
QUALIFIED T ECHNICIAN
USB
EPO
RS232
PARALLEL PORT
INTELLIGENT SLOT
BAT_NTC
ON
USB
EPO
RS232
PARALLEL PORT
INTELLIGENT SLOT
BAT_NTC
ON
USB
INTELLIGENT SLOT
PARALLEL PORT
EPO
RS232
BAT_NTC
INPUT BREAKER
ON
OFF
WARNING
HIGH LE AKAGE CURRENT
EARTH CON NECTION ESSENTIAL
BEFORE CO NNECTING SUPPLY
USB
INTELLIGENT SLOT
PARALLEL PORT
EPO
RS232
BAT_NTC
INPUT BREAKER
ON
OFF
WARNING
HIGH L EAKAGE CURRENT
EARTH C ONNECTION ESSENTIAL
BEFORE CONNECTING SUPPLY
HIGH LEAKAGE CURRENT
EARTH CON NECTION ESSENTI AL
BEFORE CO NNECTING SUPPLY
USB
EPO
RS232
PARALLEL PORT
INTELLIGENT SLOT
BAT_NTC
USB
EPO
RS232
PARALLEL PORT
INTELLIGENT SLOT
BAT_NTC
USB
EPO
RS232
PARALLEL PORT
INTELLIGENT SLOT
BAT_NTC
USB
INTELLIGENT SLOT
PARALLEL PORT
EPO
RS232
BAT_NTC
INPUT BREAKER
ON
OFF
WARNING
HIGH LE AKAGE CURREN T
EARTH CON NECTION ESSENTI AL
BEFORE CO NNECTING SUPPLY
USB
INTELLIGENT SLOT
PARALLEL PORT
EPO
RS232
BAT_NTC
INPUT BREAKER
ON
OFF
WARNING
HIGH LE AKAGE CURREN T
EARTH CON NECTION ESSENTI AL
BEFORE CO NNECTING SUPPLY
USB
INTELLIGENT SLOT
PARALLEL PORT
EPO
RS232
BAT_NTC
INPUT BREAKER
ON
OFF
WARNING
HIGH LEAKAGE CURRENT
EARTH CON NECTION ESSENTI AL
BEFORE CO NNECTING SUPPLY
DO NOT OPEN EXCEPT
QUALIFIED TE CHNICIAN
DO NOT OPEN EXCEPT
QUALIFIED T ECHNICIAN
DO NOT OPEN EXCEPT
QUALIFIED TECHNICIAN
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