UPS471-02-00 PW9000DPA User Manual UK Dated 06/08/14
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3: Installation
3.9
Multi-cabinet configuration and paralleling cables
In a multi-cabinet system a series of communication bus cables must be connected between each cabinet to enable
various parallel control functions to operate. Each module must also be configured to identify its position within the parallel
system – e.g ‘first’, ‘middle’ or ‘last’ module. The module set up to be the ‘first’ module in the chain acts as the ‘master’
module in relation to the inter-module parallel control logic.
Figure 3.17 Cabinet interface board
Setting the configuration DIP Switch SW1-9
DIP Switch SW1-9, located on the UPS interface board (see Figure 3.17), is used to configure the position of the cabinet
in the parallel UPS chain. Using this switch you can define the cabinet’s position as:
• the
first
(‘master’) cabinet in the chain (e.g.
cabinet 1
in Figure 3.18).
• the
middle
cabinet in the chain (there may be more than one
middle
cabinet).
• the
last
cabinet in the chain (e.g.
cabinet n
in Figure 3.18).
1. Set DIP Switch SW1-9 of each cabinet according to the table below:
Key Point:
This section is required only if two (or more) cabinets are to be connected in a multi-cabinet parallel
configuration, as described paragraph 2.3.3.
WARNING:
Before making the following connections ensure that all the UPS cabinets are powered down
and all parallel isolators (IA2) are open.
First UPS
Middle UPS
Last UPS
Single UPS
SW 1a 1
ON
OFF
ON
ON
SW 1b 2
OFF
OFF
ON
ON
SW 1c 3
ON
OFF
OFF
ON
SW 1d 4
ON
OFF
ON
ON
SW 1e 5
ON
OFF
ON
ON
SW 1f 6
ON
OFF
ON
ON
SW 1g 7
ON
OFF
ON
ON
SW 1h 8
ON
OFF
ON
ON
SW 1i 9
ON
OFF
ON
ON
SW1-9 Multi-Cabinet Configuration Switch
For paralleling cabinets fit optional adapter:
JD5 Parallel BUS - Input Connector
JD6 Parallel BUS - Output Connector
JD8 Parallel BUS connector