HP R12000 XR, User Manual

Page: 76 / 126

UPS operations 76
2.
Select Charger Limit-Gen , scroll to the wattage, and then press Enter .
The default charger limit wattage setting is 0 W.
3.
Select Charger Limit-Uti , scroll to the wattage, and then press Enter .
The default charger limit wattage setting is 555 W.
4.
Select On-Gen Duration , scroll to the time period, and then press Enter .
The default on-generator duration is 30 minutes.
The Management Module can override the default settings for charge power level switching by initiating an
immediate switch to the generator charge power level if the Management Module receives a SNMP request
with an on-generator command from a generator system. The on-generator command must be received
within 15 minutes of the AC input power becomes available again or the power unit will use the default time
periods. The power unit will switch back to the utility charge power level either after an off-generator
command is received or after the defined on-generator period of time expires. To set up the Management
Module to receive generator commands, see the HP DirectFlow UPS Management Module User Guide .
Changing the language
To change the display language on the power unit:
1.
Scroll through the main menu and select Settings .
2.
Select Language .
3.
Press the Up or Down arrow to scroll to the language.
4.
Press the Enter button to save the change.
Working with UPS modes of operation
The UPS modes of operation result from current operating conditions and the parameters that provide power
protection to connected load devices. Some mode options can be set or adjusted using the UPS menu options
(on page
73 ).
The UPS has the following modes of operation:
•
AC mode (on page 76 )
•
Battery mode (on page 77 )
•
Bypass mode (on page 77 )
AC mode
When the UPS operates in AC mode:
•
Power is available at the UPS receptacles.
•
The power unit actively filters and mitigates harmonics and power factor.
•
The power unit charges the batteries as necessary.
•
The UPS transfers to Battery mode (on page 77 ) or Bypass mode (on page 77 ) as necessary.
An audible buzzer sounds briefly to indicate the UPS is powering up when the power unit is connected to
utility power. If no utility power is available, the UPS might enter Battery mode.