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SECTION 4 |
b1) The unit will automatically switch to "Charging Mode" only under the following conditions:
i. If qualified AC input is available that is within the limits of voltage (Sections 4.6 and 4.7) and frequency
(Sections 4.5.2.4 and 4.5.2.6)
ii. If the battery voltage at the time of qualified AC input availability is higher than "Battery ultra low voltage!"
fault threshold of 9V for EVO-2212/2212E/3012/3012E or 18V for EVO-2224/2224E/4024/4024E (Section 7,
Srl. 2 of Table 7.1).
b2) Automatic switching over to "Charging Mode" has 2 options selectable through programming parameter
"INPUT RECOVERY" (Section 4.5.2.11) as follows:
i. Option 0=Buffered (Default): Under this option, the unit will initially start in "Inverting Mode", synchronize
with the AC input and then transfer to "Charging Mode". However, if a user programs the value of
"BATTERY LOW VOLTAGE" (Section 4.4.2.9) very close to the "Battery ultra low voltage!" fault threshold of
9V for EVO-2212/3012/2212E/3012E or 18V for EVO-2224/4024/2224E/4024E (Section 7, Srl. 2 of Table
7.1), a larger load / larger starting surge of the load may drag the battery voltage to 9V / 18V or below for 1
ms and trigger "Battery ultra low voltage!" fault (Section 7, Srl. 2 of Table 7.1). Under this condition, the user
may change to Option 1=Direct
iii. Option 1=Direct: Under this option, the unit will directly start in "Charging Mode"
4.4.2.9.3 Programming Steps for Parameter "BATT LOW VOLTAGE"
Enter Key
ð
A N Y O P E R A T I N G
M O D E
S C R E E N
4.4.2.10 LV DETECT TIME (Table 4.1, Parameter Setup Screen No.10)
To prevent "Battery low voltage!" fault and shut down of the inverter due to momentary dips in battery voltage as
a result of high power, short duration AC loading (e.g. motor starting, inrush current etc.), a timer is used to qualify
"BATT LOW VOLTAGE"condition only if the battery voltage drops to or below the set "BATT LOW VOLTAGE" threshold
for the set "LV DETECT TIME". The timer starts as soon as the battery voltage drops to the set threshold of "BATT LOW
VOLTAGE" described at Section 4.4.2.9.
4.4.2.10.1 Programming Steps for Parameter "LV DETECT TIME"
Enter Key
ð
A N Y O P E R A T I N G
M O D E
S C R E E N
4.4.2.11 LV CUT OFF TIME (Table 4.1, Parameter Setup Screen No.11)
4.4.2.11.1 Value of "LV CUT OFF TIME": 1 to 7200 sec
Even when the Inverter Section is shut down due to "Battery low voltage!" fault condition as described at Section
4.4.2.9, there will still be some power drawn from the battery to keep the other circuitry in the EVO™ Inverter/Charger
alive so that the inverter can be switched on when the fault gets cleared automatically after the battery has been
recharged to the "RESET VOLTAGE" (Section 4.4.2.7) or when AC input voltage is available. However, if the fault is
not cleared over a long period of time, the battery may get completely discharged. Hence, a timer is used to record the
duration of "Battery low voltage!" condition. The EVO™ Inverter/Charger will be completely shut down (LCD Display /
LED / Buzzer will be OFF) when the duration of the "Battery low voltage!" fault condition as described above is equal
to the "LV CUT OFF TIME".
Parameter Setup
Enter Key
ð
S E L E C T
G R O U P
B U L K C U R R E N T
C H A R G E
C U R V E
Enter Key
ð
S E L E C T
G R O U P
B U L K C U R R E N T
C H A R G E
C U R V E
Up Key x 8 times
ð
B A T T
L O W V O L T A G E
4 0
A
1 0 . 5 0
V
Up Key x 9 times
ð
L V
D E T E C T
4 0
A
1 0
s e c
Enter Key
ð
K E Y
I N
P A S S W O R D
0 0 0 0
Password 8052
See Section 4.3.1
Enter Key
ð
T I M E
K E Y
I N
P A S S W O R D
0 0 0 0
Password 8052
See Section 4.3.1
ð
B A T T
L O W V O L T A G E
1 0 . 5 0
V
See Table 4.1, Parameter
Setup Screen No.9 for
programming range
ð
L V
D E T E C T
T I M E
0 1 0
s e c
See Table 4.1, Parameter
Setup Screen No.10 for
programming range
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