OPTI-UPS DS20KBT - Manual (Page 11)

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USB port (option)
Connecting the UPS to your computer is accomplished through the USB port on the back
of your computer. USB compliant hardware and operating system will be necessary
including installation of a UPS driver. The serial port cannot be used when using the USB
port. The USB cable is standard and can be bought separately.
6.1 EPO port (emergency power off)
A customer-supplied switch located remotely can be used to open the EPO connection
and allows UPS output receptacles to be switched off. Since the EPO shuts down the
equipment immediately, orderly shutdown procedures are not followed and not by any
power management software. The UPS will have to be manually restarted in order to
regain power to the outlets.
7. User’s guide to operations
DS8000B~DS20000B shutdown procedures:
STEP1:
From the front panel, press and hold “ON/OFF” button for 2 seconds until hear a long
beep sound and see “shutdown” on the screen. Then release on/off button, later you will
see “UPS OFF” text appears and disappears.
STEP2:
While display panel show no text but only backlight, turn off input breaker.
STEP3:
After turning off input breaker, turn off bat breaker until all fans stop to complete the
DS8000B~DS20KB shutdown procedures.
Necessary information for operation of the unit is covered in this chapter.
Normally the UPS runs automatically, but on those few occasions such as
just after installation, all the starting and shutting down procedures are
described herein.
7.1 Starting and shutting down the UPS
Starting the UPS
z Ensure that installation was correct and successful and that the input power cable is
connected to a well-grounded outlet.
z The UPS can be started by pushing the “ON/OFF” button on the front panel.
z The UPS should now start its inspection of: internal functions, main synchronization
and inverter startup. Then power should start to be supplied via the terminal block.
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z During this inspection, the LCD will display “Ready on”. The LED shall light up
when output power has commenced and the LCD will display “Line mode”.
z Switch on the loads.
Shutting down the UPS
z Shut down and turn off the loads.
z Push the “ON/OFF” button on the front panel for two seconds. The alarm will sound
and the UPS will shut down.
z The LCD will display UPS OFF for a few seconds.
z In emergency situations, the EPO located on the back of the unit should be used.