USER MANUAL - LBU-ONL 1.5K/2.25K/3K/4.5K
VER.2211.17-One (ENG)
8
5.
OPERATION MODES
This is a True Online Double Conversion Inverter, and it is designed to offer clean, bump-less, and highest quality power to your
computer related equipment protecting also your valuable data. Power delivered by Inverter is 100% sine wave as main line.
According to AC main service, and how Inverter has been configured, it may operate in following modes:
ONLINE NORMAL Mode
: When Inverter is off by selecting ON push button in front panel Inverter enters ONLINE NORMAL mode if AC
main service is inside acceptable input range. Under this mode
Unit’s internal
inverter powers outputs and the energy is taken from DC
voltage coming from AC/DC converter. Batteries are charged by AC Line if required.
BATTERY Mode:
If in ONLINE NORMAL mode Inverter detects a problem in AC input Line, it enters in battery mode. Under this mode
Inverter takes energy from batteries to feed inverter that generates power for the output. There are no transfers neither micro-cut on
Inverter output as inverter was already working. The only difference is that energy is now coming from batteries instead of rectifier
output. Transfer time is actually Zero (0ms). Inverter also can enter in battery mode when it is turned on without an acceptable AC input.
STATIC BYPASS (INTERNAL BYPASS):
This mode can be adopted if Inverter configuration allows BYPASS mode and any of 3 below
conditions is present:
Under bypass mode, Inverter AC output is feed from Inverter AC input. When Inverter is in bypass mode, in case AC input is interrupted,
output will be interrupted also, and Inverter will power off. No battery mode can be adopted from bypass mode.
Bypass mode can be caused by any of below conditions:
1-
Bypass mode is adopted, in case ON button has not been activated as soon as Inverter detects a valid AC input on its
terminals. (If bypass mode is not enabled, Inverter will simply light its LCD. Outputs will keep powered off)
2-
Bypass mode is adopted as soon as a problem is detected in its internal circuitries.
3-
Bypass mode is also activated in case an external overload is detected in Inverter output. It happens when equipment
connected to Inverter output requires a power higher than max. power of the Inverter
Additionally, this Inverter can adopt other operation modes under operator demand as described:
FREQUENCY CONVERSION:
This Inverter offers a very sophisticated function named frequency conversion (CF) that allows Inverter to generate power output at
determined frequency value (50Hz or 60Hz) no matter input frequency value. Inverter will be able to generate output at 50Hz even input
source is at 60Hz or generate 60Hz even if connected to 50Hz source.
This function can be configured and activated by LCD. Check configuration section of this manual.
IMPORTANT NOTES:
1.- Under CF mode, Inverter will disable BYPASS mode. Since Inverter has been configured to generate output with frequency value
different to input frequency, BYPASS mode is disabled to avoid a not acceptable frequency value at output.
2.- When CF function is activated, maximum power output is de-rated to 60% of maximum nominal capacity. For example, for a 3K
model, when CF is activated, maximum output is decreased to 1.8K.
ECO:
Under this mode, Inverter powers outputs from the AC input. This is a kind of supervised BYPASS mode. As soon as AC input is out of
acceptable input range for ECO mode (as defined on LCD configuration menus), Inverter switch Inverter from ECO to ONLINE mode or
battery mode. Online mode is adopted if input range is acceptable for ONLINE mode. Switching from ECO to other mode takes about
4ms to10ms.
ECO mode must be activated on LCD according to configuration section of this manual.
