SAMLEX AMERICA INC. | 121
SECTION 7 |
Fault Messages and Troubleshooting Guide
Srl.
No
Fault Message
Symptoms and Troubleshooting
2
Battery ultra low
voltage!
•
EVO™ is in
FAULT MODE
because the battery voltage has
dropped momentarily 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 or below for EVO-4248SP.
•
The Inverter Section will be switched OFF and message “Battery ultra low voltage!” will be
displayed. Red LED marked “Fault” will be steady ON, Blue LED marked “Status” will be switched
OFF and the buzzer in EVO
TM
will beep steady.
The unit will get locked in this condition and will be
required to be switched off as follows:
o
The unit will automatically switch off after expiry of time set by parameter “LV CUT OFF
TIME”
(Section 4.4.2.11)
[LCD display / LED / Buzzer will be OFF]
or,
o
In case the time set by parameter “LV CUT OFF TIME”
(Section 4.4.2.11)
has not expired,
switch off the unit manually (
See Section 3.2.2)
•
While in “Battery ultra low voltage!” fault condition, if qualified AC input is made available
before expiry of time set by programming parameter “LV CUT OFF TIME”
(Section 4.4.2.11)
,
the unit will automatically reset to “Charging Mode”
provided the battery voltage is (i) >9V
for EVO-1212F/1212F-HW/2212/2212E/ 3012/3012E or, (ii) >18V for EVO-1224F/1224F-
HW/2224/2224E/4024/4024E or, (iii) >36V for EVO-4248SP
o
In case it is desired that the unit should
NOT
switch off due to “Battery ultra low voltage!”
fault condition after expiry of time set by parameter “LV CUT OFF TIME” (Section 4.4.2.11)
but should automatically reset to “Charging Mode” on availability of qualified AC input
voltage with battery voltage (i) >9V for EVO-1212F/1212F-HW/2212/2212E/ 3012/3012E or,
(ii) >18V for EVO-1224F/1224F-HW/2224/2224E/4024/4024E or, (iii) >36V for EVO-4248SP,
the value of time set by parameter “LV CUT OFF TIME” should be
changed to 0 sec
(Refer
to Section 4.4.2.9.2)
•
If the batteries are charged by external charger connected directly to the batteries or through
the External Charger Input
(3, 4 in Fig 2.1 in the EVO
TM
Owner’s Manual)
and
the battery voltage
recovers to the set threshold of parameter “RESET VOLTAGE”
(Section 4.4.2.7)
before the expiry
of time set by parameter “LV CUT OFF TIME”
(Section 4.4.2.11)
while in “Battery ultra low
voltage!” fault condition, the Inverter Section will restart and “Battery ultra low voltage!” fault
condition will be cleared.
NOTE:
Momentary low voltage threshold of (i)9V or lower for 1 ms for EVO-1212F/1212F-HW/2212/2212E/
3012/3012E or, (ii)18V or lower for 1 ms for EVO-1224F/1224F-HW/2224/2224E/4024/4024E or, (iii)
36V or lower for EVO-4248SP that triggers
“Battery ultra low voltage!”
fault is likely to be reached
under the following operating conditions:
a) The threshold of parameter “BATT LOW VOLTAGE”
(Section 4.4.2.9)
has been set at very
low Depth of Discharge – slightly above the lower programming limit of (i)9V for EVO-
1212F/1212F-HW/2212/ 3012/3012E, (ii)or slightly above 18V for EVO-1224F/1224F-
HW/2224/2224E/4024/4024E or, (iii) slightly above 48V for EVO-4248SP. When the battery
voltage approaches this low level of discharge,
its internal resistance will be considerably higher
as
compared its internal resistance at higher State of Charge
b) AC load(s) being powered are of a type that draw very high starting surge current spikes.
Examples of such types of loads are (i) Switched Mode Power Supply (
SMPS
) based devices like
Battery Chargers / AC to DC Adapters/ AC to DC Drivers for LEDs (iii) Compact Fluorescent Lamps
(CFL), (iv) Quartz Lamps, (v) Ceramic Heaters, (vi) Compressors, (vii) Motors and (viii) Laser Printers
etc.
c) When the above type of AC loads
[See (b) above]
are switched on in Inverting Mode, the high
starting surge current spikes will produce considerably higher voltage drop across higher internal
resistance of the battery because of operation at deeply discharged level approaching threshold
set by parameter “BATT LOW VOLTAGE” threshold
(Section 4.4.2.9)
. When this momentary drop
is equal to 9V/18V/36V or lower, the unit enters
“Battery ultra low voltage!”
fault condition
Содержание EVO-RC-PLUS
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