Parallel Ups Connections; Input & Output Connections; Communication Connection; Interface Set-Up And Configuration - ABB DPA 250 S4 Operating Manual

9 I N S TA L L AT I O N
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9.5 Parallel UPS connections

To ensure protection of personnel during the in-
—
9.5-1: Communica-
stallation of UPS make sure that the connections
tion connection
are performed under the following conditions:
• No mains voltage is present
• All Loads are shut down and disconnected
• UPS units are shut down and voltage-free
• UPS Modules are fitted in correct position
• External Maintenance Bypass is open and in
the OFF position
• Remove terminal cover of the UPS units
• Connect the ground-wire coming from the lo-
cal power grid source to the terminal X7-PE
(PE) of each UPS units in the parallel system.
9.5.1
The input and output UPS connections in a paral-
lel system shall be implemented as the stand-
alone UPS connection described in chapter 9.4.
9.5.2
If the UPS system consists of parallel UPS units,
the installation of the "parallel cable" between
them is required as follow:
1. Start connecting one end of the parallel cable
to JD1 connector mounted on the first UPS unit
2. Connect the other end of the parallel cable to
JD2 connector mounted on the second UPS
unit.
3. If more UPS units are present on the parallel
system, continue connecting the additional
parallel cables on the same way until the last
one.
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9.5-1
Input & output connections

Communication connection

4. The last parallel UPS unit must be connected to
the first UPS unit (JD1 to JD2) to close the ring
communication bus.
9.5.3

Interface set-up and configuration

Parallel board (NW40140) - DIP SW1:
SW1 1
UPS Unit 1 ON
Other UPS unit OFF
Standalone UPS OFF
Customer interface (NW40085) - DIP SW1:
SW1 1
UPS Unit 1 OFF
Other UPS unit
OFF
Standalone UPS
OFF
Jumpers: Parallel board
(NW40140)*
JP1 ON
JP2 NOT USED
JP3 NOT USED
JP4 NOT USED
JP5 ON
JP6 OFF
JP7 NOT USED
JP8 ON
JP9 ON
JP10 ON
JP11 ON
JP12 ON
*Jumper on CN59=ON
** With external output breaker JP8=OFF.
7 7
SW1 2 SW1 3
ON ON
ON ON
OFF OFF
SW1 2
OFF
ON
OFF
Customer interface
(NW40085)
NOT USED
ON
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
**ON
NOT USED
ON (PIN 1-2)
ON (PIN 1-2)
NOT USED