Eaton 9PX 8000i Manuel D'installation Et D'utilisation page 23

5. Operations
5.1 UPS parallel system start-up
In "Redundancy Only" mode, verify that the total equipment ratings do not exceed the capacity of one
UPS to prevent an overload alarm.
In "Parallel Operation" mode, verify that the total equipment ratings do not exceed the capacity of two
UPS to prevent an overload alarm.
1. Check the two UPS are correctly connected to the ModularEasy
(see "4. Power cables connection", page 14).
If the UPS is equipped with outlets, those outlets can no longer be used (loads can only be connected to
the ModularEasy outlets or the ModularEasy Output terminal blocks)
Check that two UPS are connected together with the 9PX parallel cable.
2. Check that the ModularEasy terminal blocks are connected to the AC source,
and to the Bypass AC source (*)
3. Check that the ModularEasy manual Bypass switch is to the "UPS" position
4. Set the UPS output switch of the ModularEasy to the "I" position (On) for 9PXMEZ6Ki.
Set the two UPS output switches of the ModularEasy to the "I" position (On) for 9PXMEZ11Ki
5. Set the AC source upstream circuit breaker (not provided) to the "I" position (On) to switch on the utility
power (see "3.4 Tower installation", page 10).
Set the Bypass source upstream circuit breaker (not provided) to the "I" position (On) to switch on the
Bypass power (*).
6. Check that the two UPS are correctly powered (UPS display panel lighted)
7. Check the two UPS display "1UPS + 1UPS redundant". Do not continue to the next step if it is not
displayed and check the two following features :
a) The two UPS are connected together with the parallel cable, PN: 744-A2675
b) The UPS firmware version is parallel compatible :
Screen menu
If "// Ready" doesn't appear just next to the UPS firmware number, contact your Eaton reseller to
download the latest firmware.
8. Choose the mode "Redundancy Only" or "Parallel Operation"
by the Screen menu
• "Parallel Operation" is the default mode. "Parallel Operation" cancels the audible alarm when the load
power is more than the maximum power of one UPS.
• "Redundancy Only" set an audible alarm when the load power is more than the maximum power of one
UPS .
9. Press the "ON" button of any one of the two UPS to start the parallel system.
(*) only in case of Bypass AC source option connected (9PXMEZ11Ki only).
Page 20
Identification UPS/NMC firmware.
Settings In/Out settings
PN: 744-A2675
Redundancy mode.
614-09354-01_EN