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consisting of 3, 60 Hz cycles of “reduced 48VAC load search voltage” every 0.5 sec and from there, the power will be
calculated based on the rated output voltage of 120VAC for the Normal Operating Mode]. Operation of the “Power
Saving Mode” is controlled through the following programming parameters:
• 4.6.3.1 Parameter “ENTER POINT” [See Section 4.8.2.2 in the EVO-RC-PLUS Remote Control Manual]
This parameter determines the threshold of power drawn by the load at which the EVO will exit the Normal
Operating Mode (full 120VAC output voltage; No Load Power Draw from the battery will be 25-30W) and “enter”
Power Saving Mode (output voltage consisting of 3, 60 Hz cycles of “reduced 48VAC load search voltage” every 0.5
sec; No Load Power Draw from the battery will be < 8W).
The programmable range of this parameter is 4-50Watts; Default value is 6W.
Whenever the Inverter Section is switched ON with “Power Saving Mode” in enabled condition, it will initially start in
Normal Operating Mode [Full 120VAC output voltage; No Load Power Draw from the battery will be 20W]. It then
measures the power drawn by the load, if any, based on Normal Operating Voltage of 120VAC. If the power drawn
by the load is ≤ the programmed power value of “Enter Point”, the Inverter Section will enter “Power Saving Mode”
(pulsing output voltage consisting of 3, 60 Hz cycles of “reduced 48Vrms load search voltage” every 0.5 sec). It is,
therefore, important to rst determine the running power consumption of your load in Watts and then, ensure that
the programmed value of parameter “ENTER POINT” is > the running power of the load. If the running power of the
load is < the programmed value of parameter “ENTER POINT”, the load may turn ON initially due to higher initial
startup surge power but will turn OFF when it starts drawing lower running power that is < the programmed value
of parameter “ENTER POINT”. (NOTE: The initial startup surge power of AC loads may be up to 10 times higher than
their “running power” depending upon the type of AC load).
• 4.6.3.2 Parameter “WAKE UP POINT” [See Section 4.8.2.3 in the EVO-RC-PLUS Remote Control Manual]:
Once the inverter enters “Power Saving Mode” as described at Section 4.8.3.1 above [Output voltage consisting of
3, 60 Hz cycles of “reduced 48VAC load search voltage” every 0.5 sec; Power draw from the battery will be < 8W],
it will continue to remain in this mode till the time the power drawn by the load is ≥ than the programmed threshold
of Parameter “WAKE UP POINT” [Programmable range is 4-50Watts; Default is 7W]. When the power drawn by the
load ≥ the programmed threshold of Parameter “WAKE UP POINT”, the EVO will wake up and change to the Normal
Operating Mode (full 120VAC output voltage; No Load Power Draw from the battery will be 20W).
INFO
Power Saving Mode should be disabled for the following loads:
• Low power loads that draw less than 5W e.g. digital clocks, satellite receivers, phones / answering
machines etc.
• Audio / video / computing devices that consume normal operating power > 50 W but draw less than
5W on entering Sleep Mode when switched off or , when no activity is seen for a specied time.
• Some devices like small uorescent lights, refrigerators, microwaves, computers and other sophisticated
electronics may not be detected when scanned by the output voltage characteristics of the Power
Saving Mode [Output voltage consisting of 3, 60 Hz cycles of “reduced 48VAC load search voltage”
every 0.5 sec]. These devices have power supplies in their front end that do not present a load until
the full 120VAC line voltage is available.
SECTION 4 | General Description & Principles of Operation
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