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Normal Mode is around 20W. The EVO
TM
has a provision to minimize this “No Load Power Draw”,
if required (Applicable only when the unit is in “Inverter Mode”). This is achieved by enabling
the “Power Saving Mode”.
The unit is shipped in default “Disabled” condition i.e. Power
Saving Mode will be NOT active.
Optional Remote Control EVO-RC-PLUS is required to enable
this mode (Refer to Section 4.8.2.1 of the Owner's Manual for EVO-RC-PLUS). When this mode is
enabled, the unit does not provide continuous output power. Pulsing output power consisting of
only 3 cycles of reduced 48 VAC output voltage that are made available every 0.5 seconds is used
to sense if a minimum load is present or not.
As continuous power is not being supplied, the
“No Load Power Draw” is reduced to less than 8W.
If a load greater than the programmed
value of “Wake-up Point” (Default
–
7W) is sensed, the unit exits Power Save Mode and starts
providing normal continuous output power. If the load drops to the programmed value of “Enter
Point” (Default
–
6W), the unit once again reverts to Power Saving Mode. Programmable and De-
fault Values of “Enter Point” and “Wake-up Point” are shown in Table 6.6. Further details are avail-
able at Sections 4.8.2.1 to 4.8.2.3 of the Owners Manual for the Remote Control EVO-RC-PLUS.
Power Saving Mode should be disabled for the following loads:
Low power loads that draw < 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 specified time.
4.6.4 Power Saving Mode - Transfer Characteristics in Grid
•
Transfer from AC input source to Inverter:
If qualified Grid / Generator AC input power
is available (its voltage and frequency are within the programmed range), the Transfer Relay
remains energized and the AC input power is passed through to the load and at the same
time, the unit operates as a battery charger. If AC input power from Grid / Generator fails
or is not qualified (its voltage and frequency are not within the programmed range), the
Transfer Relay is de-energized and the load is transferred to the inverter. When this transfer
takes place, the inverter initially operates in Normal Mode. If the AC load was greater
than the programmed value of “Wake-up Point” (Default
–
7W), the inverter continues in
Normal Mode. However, if it sees a load less than the programmed value of “Enter Point”
(Default
–
6W) for around 5 sec, it enters Power Saving Mode.
•
Transfer from Inverter to A input source:
As soon as qualified AC input power from
Grid / Generator is available, the inverter will exit Power Saving Mode and will switch over
to Normal Mode. This switch over is necessary for synchronizing the AC output of the
inverter with the AC input before transfer (Synchronization can not be carried out with
pulsing wave form during Power Saving Mode). After synchronization is completed, the
load is transferred to the Grid at zero crossing of the voltage waveform.
4.6.5 Normal (Off-Line), On-Line and Charger Only Modes
i
INFO
Description given below provides general capability of this function. For details of
programming, please refer to sub-headings “ONLINE MODE” (Section 4.4.2.13) and
"ONLINE OPTION" (Section 4.4.2.14) at Section 4.4 in the Owner’s Manual for Remote
Control Model EVO-RC-PLUS.
SECTION 4 |
General Description & Principles of Operations
Summary of Contents for Evolution EVO-1212F
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