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3. Installation and Setup
3.6.3 Parallel Function Setting
1. For input and output wiring, make sure to follow the instructions in section 3.6.1.
2. For the parallel board setting, make sure to follow the instructions in section 3.6.2.
Confirm no power is applied to either UPS at this time.
Once the two steps above and the battery configuration have been completed correctly, proceed with the following steps:
1. Do not connect Parallel Cable until informed.
2. Set the input breakers (Q1) of two UPS systems to the "ON" position. Make sure to keep the output breakers (Q3) of two UPS systems
set to the "OFF" position.
3. Turn on the battery breaker.
4. Turn on the external AC source breaker to apply the AC input source to both UPS systems.
5. Wait for the the power-cycles to complete. Proceed to set UPS 1.
6. Use the LCD panel on UPS 1 to set up the parallel function. Enter the "PARALLEL" menu in the "SETUP" page (refer to section 4.2.5.5
Setup-Parallel Screen for more information).
7. Enable "UPS Parallel" function of UPS 1 (ignore the "Parallel UPS Cable Loose" warning).
8. Choose the battery configuration as "independent" or "common" battery, depending on your preference.
9. To save your settings, select the "Save Setting" icon in the "General" screen of the "SETUP" page.
10. Proceed to set up UPS 2.
11. Set up the parallel function through the LCD panel on UPS 2. Enter the "PARALLEL" menu in the "SETUP" page (refer to section
4.2.5.5 Setup-Parallel Screen for more information).
12. Enable the "UPS Parallel" function of UPS 2 (ignore the "Parallel UPS Cable Loose" warning).
13. Choose the battery configuration as "independent" or "common" battery, depending on your preference.
14. To save your settings, select the "Save Setting" icon in the "General" screen of the "SETUP" page.
15. Turn off the external AC source breaker and wait for complete shutdown of both UPS systems.
16. Turn off the battery breakers.
3.6.4 Parallel Cable Connection
There are two connectors at the end of each parallel cable: one is a 16-pin connector and the other is a 2-pin connector.
Note: If the 2-pin connector is disconnected by accident, the UPS will prompt a fault: "Warning! Parallel UPS Cable Loose". Insert the 16-pin connector into
CN7 and the 2-pin connector into CN10 of the Parallel Board of UPS 1. Connect the other end of the parallel cable into the Parallel Board of UPS 2, again
connecting the 16-pin connector into CN7 and the 2-pin connector into CN10.
For the UPS with two parallel boards, use any one of the two boards.
Figure 3.10 UPS 1 Parallel Board
Figure 3.11 UPS 2 Parallel Board
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