Eaton
®
9390 UPS (20–80 kVA) and 9390IT (20-40 kVA) Installation and Operation Manual
S
164201603 Rev 4
www.eaton.com/powerquality
9-1
Chapter 9
UPS Operating Instructions
The following procedures provide instructions for operating the UPS or parallel
system. For a description of the UPS control panel functions, see Chapter 8, “Using
the Control Panel.”
NOTE
Before starting the UPS or parallel system, ensure all installation tasks are complete and a
preliminary startup has been performed by authorized service personnel. The preliminary startup verifies all
electrical interconnections to ensure the installation was successful and the system operates properly.
NOTE
Read this section of the manual and have thorough knowledge of parallel and UPS operation before
attempting to operate any of the controls.
NOTE
The UPS displays two minutes of battery runtime at the initial startup. After a 24-hour charging
period, the UPS automatically runs a battery test and the correct battery runtime displays.
9.1
Single Module Operation
9.1.1
Starting the UPS in Normal Mode
NOTE
When starting a 9390IT UPS with internal batteries, remove the battery compartment access panel
by loosening the wing nut at the bottom of the panel and lifting the panel off the retaining hook at the top.
(See Drawing 164201603-12 on page A-67)
To start the UPS system:
1.
Close the UPS input feeder circuit breaker.
2.
If the UPS is dual feed, close the UPS Bypass input feeder circuit breaker.
3.
Observe the UPS control panel display becoming active, indicating logic power.
4.
Press the
CONTROLS
pushbutton on the main menu bar. The System Controls
screen appears.
5.
On the System Controls screen, the power module (PM) status should indicate
SHUTDOWN.
6.
Press the
NORMAL
pushbutton on the System Controls menu bar.
If Auto Bypass is enabled, the critical load is immediately supplied by the bypass
source, in Bypass mode, until the inverter turns on and the UPS transfers to
Normal mode. The status indicator on the UPS control panel indicates the UPS is
in Bypass mode. If Auto Bypass is not enabled, the UPS output remains off until
the UPS transfers to Normal mode.
7.
Observe the following messages appear sequentially on the power module (PM)
status line:
DC STARTING
INVERTER STARTING
INVERTER SYNCING
READY
ONLINE
Figure
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