SamplexPower EVO-RC-PLUS Owner's Manual page 75

SECTION 4 |
4.4.2.23.3 Operating Sequence
1) AC input power is available – EVO
2) AC input power fails: EVO
3) The battery continues to get discharged. When battery voltage (i) drops to value equal to / lower than the
"BATT LOW VOLTAGE" threshold (Section 4.4.2.9) for period equal to LV DETECT TIME (Section 4.4.2.10)
or (ii) momentarily drops for 1 ms to (i) 9V or below for EVO-1212F/1212F-HW/2212/2212E/3012/3012E
or, (ii)18V or below for EVO-1224F/1224F-HW/2224/2224E/4024/4024E or, (iii) 36V for EVO-4248SP, EVO's
Inverter Section is shut down and displays "Battery low voltage! fault / "Battery ultra low voltage!" fault
conditions respectively (See Srls. 1 and 2 of Table 7.1, Section 7).
As parameter "LV CUT OFF TIME" (Section 4.4.2.11.2) has been set at 0 sec, the EVO
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completely but continues to remain in "Battery low voltage!" / "Battery ultra low voltage!" fault condition
4) AC input power is restored and is within the programmed limits of frequency and voltage
5) EVO exits "Battery low voltage!" / "Battery ultra low voltage!" and starts operating in "Charging Mode"
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(say, "Operating Condition 1")
As soon as "Charging Mode" is activated, the Timer associated with parameter "SAFE CHARGING"
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(Section 4.4.2.23) starts countdown:
The "SAFE CHARGING" Timer will countdown to "0" min if AC input remains on for more than
o
the programmed value of "t" min
The "SAFE CHARGING" Timer will NOT countdown to "0" min if AC input remains on for period
o
less than the programmed value "t" min
6) AC input fails again. The EVO
Timer that recorded the time AC input was available ("Operating Condition 1" mentioned at Srl. 5 above):
"SAFE CHARGING" Timer value has counted down to 0 min: EVO
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Mode". As the batteries were re-charged for sizable time period > the programmed time "t" of
the "SAFE CHARGING" timer, the battery would have charged appreciably higher than the "BATT
LOW VOLTAGE" threshold (Section 4.4.2.9). Hence, there is LESS likelihood that high inrush current
from the AC loads would drag the battery voltage down to (i) 9V or lower for EVO-1212F/1212F-
HW/2212/2212E/3012/3012E or, (ii)18V or lower for EVO-1224F/1224F-HW/2224/2224E/4024/4024E
or, (iii) 36V for EVO-4248SP to trigger "Battery ultra low volt!" fault condition (See Section 7, Srl. 2 of
Table 7.1)
"SAFE CHARGING" Timer value has NOT counted down to 0 min: EVO
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Mode but to "STANDBY" Mode (See Screen No. 1 of STANDBY MODE screens in (i) Fig 3.1(a) for
EVO-1212F/1212F-HW/1224F/1224F-HW or, (ii) FIg 3.1(b) for EVO-2212/2212E/3012/3012E/2224/
2224E/4024/4024E or, (iii) Fig 3.1(c) for EVO-4248SP). As the batteries were re-charged for a short
time period < the programmed time "t" of the "SAFE CHARGING" timer ("Operating Condition
1" mentioned at Srl. 5 above), the battery would NOT have charged appreciably higher than the
"BATT LOW VOLTAGE" threshold (Section 4.4.2.9). Hence, there would be MORE likelihood that
high inrush current from the AC loads would drag the battery voltage down to (i) 9V or lower
for EVO-1212F/1212F-HW/2212/2212E/3012/3012E or, (ii)18V or lower for EVO-1224F/1224F-
HW/2224/2224E/4024/4024E or, (iii) 36V for EVO-4248SP to trigger "Battery ultra low volt!" fault
condition (See Section 7, Srl. 2 of Table 7) that would require manual reset.
If the battery is charged through external charging source (e.g. solar charging through Charge
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Controller connected to the battery directly or, through terminals marked "EXT Charger" on the front
panel of the unit) to voltage threshold set by parameter "RESET VOLTAGE" (Section 4.4.2.7), the
EVO will change to "INVERTING MODE"
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Parameter Setup
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transfers from "Charging Mode" to "Inverting Mode"
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will now operate as follows based on the condition of the "SAFE CHARGING"
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operates in "Charging Mode"
does not shut down
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will operate in "Inverting
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will NOT go to Inverting
TM
SAMLEX AMERICA INC. | 75