Eaton Power Xpert 9395 UPS Installation and Operation Manual 164201725—Rev 15
197
1.
Press the
CONTROLS
pushbutton on the main menu bar of the UPS to be shut down. The System Status
screen is displayed.
2.
On the System Status screen, select either the
UPS
or the
BYPASS
command.
3.
Press the
CONTROLS
pushbutton on the System Status menu bar. The UPS or Bypass Control Command
screen is displayed.
4.
On the Control Command screen, select
LOAD OFF
.
5.
Press the
SELECT
pushbutton on the Command menu bar.
The Load Off screen is displayed, providing a choice to proceed or abort the shutdown.
All power to the critical load is lost when LOAD OFF is selected in the following step. You should use this
feature only when you want to de–energize the critical load.
6.
To shut down the UPS, press
LOAD OFF
from the Load Off menu bar, and hold for three seconds. To
abort the shutdown, press
CANCEL
.
When LOAD OFF is selected and held for three seconds, the input, output, battery, and bypass backfeed
contactors open, and the power module is turned off on the UPS.
7.
If another UPS is to be shut down, proceed to that UPS and repeat Steps 1 through 6.
Do not attempt to restart the system after the Load Off until the cause of the shutdown has been identified and
cleared.
8.
Restart the UPS after pressing the
LOAD OFF
pushbutton by following the procedure in paragraph
Starting the Distributed Bypass System in Online Mode
or
Starting the Distributed Bypass System in Bypass Mode
Power is present inside the UPS cabinet until the upstream input feeder circuit breaker is opened.
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A UPS emergency power-off is initiated by the
REPO
pushbutton switch. In an emergency, you can use this
switch to control the UPS output. The REPO switch de–energizes the critical load and powers down the UPSs
immediately, without asking for verification.
The UPS, including Bypass, remains off until restarted.
All power to the critical load is lost when the REPO switch is activated in the following step. You should use
this feature only when you want to de–energize the critical load.
NOTE
The following instructions are for the Eaton-supplied REPO switch. If a customer-
supplied REPO switch is used, it may not activate in the same manner; refer to the
operating instructions provided with the switch.
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Страница 175: ...152 Eaton Power Xpert 9395 UPS Installation and Operation Manual 164201725 Rev 15 Understanding UPS Operation ...
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