Section 5 - Samlexpower Evolution Series Owner's Manual

SECTION 4 |
• Temperature compensated charging
• Programmable Charging Profiles for Lead Acid, Nickel-Zinc (Ni-Zn) and Lithium Batteries
Please see details under Section 5 titled "Battery Charging in Evolution
4.6 MODES OF OPERATION
4.6.1 Charging Mode
As long as the external AC input power is available and is within the programmed limits of voltage and frequency, it
is passed through to the AC load through the Transfer Relay Section. At the same time, the Battery Charger Section
converts the external AC input power from the Grid/Generator to DC power to charge the DC Battery Source.
4.6.2 Inverting Mode
If at any instant, the external AC input power is interrupted or is not within the programmed limits of voltage and
frequency, the Transfer Relay is de-energized and the load is transferred to the Inverter Section and internal battery
charging is terminated. This is called the Inverting Mode.
4.6.3 Power Saving Mode
Power Saving Mode related to inverters is a function designed to conserve battery power when the inverter is in ON
condition and no AC loads are connected to it or, AC loads are connected to it but have been switched OFF. This
condition is also called "No Load Condition".
When an inverter is operating under "No Load Condition", it will consume a small amount of input power from the
battery to keep all internal circuits alive and be ready to deliver the full rated output voltage and power to the load
once the load is switched ON. This input power drawn from the battery when no load is being supplied by the inverter
is called the "No Load Power Draw" (also called "Idle Power" or "Self Power Consumption). This "No Load Power
Draw" is proportional to the size of the inverter e.g. a 150 Watt inverter may have "No Load Power Draw" of around
6W and a 3000W may have "No Load Power Draw" of around 30W. This power is wasted and drains the battery
unnecessarily. It is, therefore, desirable to reduce the "No Load Power Draw" to the minimum.
The "No Load Power Draw" of EVO-1212F/1212F-HW/1224F/1224F-HW in the Normal Operating Mode is around 20W.
The EVO has an optional programmable operating mode called "Power Saving Mode" that is designed to reduce this
"No Load Power Draw" to less than 8W during conditions where the Inverter Section is ON but is not supplying any
load [Applicable only when the unit is operating in "Inverting Mode"].
Enabling / disabling of "Power Saving Mode" is carried out using optional Remote Control Model EVO-RC-PLUS. The
EVO is shipped with the "Power Saving Mode" option in "Disabled" condition [Programming Parameter "POWER
SAVING" is set at "0=Disabled" in the Default condition – See Section 4.8.2.1 of the EVO-RC-PLUS Remote Control
Manual].
When "Power Saving Mode" is enabled, the Inverter Section will NOT provide full rated output voltage of 120 VAC
of Normal Operating Mode but pulsing output voltage consisting of 3, 60 Hz cycles of "reduced 48Vrms load search
voltage" every 0.5 sec. This output voltage is used to "search" if a load is being powered and also to measure the
power drawn by this load [The power drawn by the load will be initially measured based on pulsing output voltage
General Description & Principles of Operation
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