4 | SAMLEX AMERICA INC.
SAMLEX AMERICA INC. | 5
SeCtIOn 2 |
Features of the SCC-1208l
SCC-1208L is a Series Type of PWM (Pulse
Width Modulation) Charge Controller.
It is based on an advanced design using
a microcontroller for digital accuracy and
fully automatic operation. It can be used
for 12V systems for solar charging. The
PWM battery charging has been optimized
for longer battery life.
Features
• Advanced microcontroller based,
high performance design for digital
accuracy and fully automatic and
intelligent operation
• Designed for 12 V nominal solar
panels and 12 V battery system
• 8 A continuous charging capacity –
enables use of up to 130 W,
12 V Solar Panels with Open Circuit
Voltage of up to 26 V
• Series Mode PWM (Pulse Width Modu-
lation) charging design for low loss,
higher efficiency charging and longer
battery life. See Section 3-1 for details
• 3 Stages of charging for 100% return
of capacity and long battery life – Bulk,
Absorption and float Stages
• Can safely charge 2 types of Lead Acid
batteries – Flooded / Wet Cell (Absorp-
tion Voltage 14.8 V) or Sealed AGM
(Absorption Voltage 14.5 V)
• Very low self consumption of < 9 mA
• MOSFET based reverse current blocking
for night-time battery discharge pre-
vention. This allows much lower losses
as compared to Diode based blocking
• Totally sealed and splash proof design
with Ingress Protection Rating of IP65.
Can be installed in outdoor locations
• Wide operating temperature range of
-40°C to +60°C
• Automatically turns on the loads (like
lights) when dark and turns off at day
time. Ideal for street lights / automatic
night lighting
• Low voltage disconnect protects the
battery against deep discharge when
the load is connected to the Load
Terminals.
• Protected against overload, over tem-
perature, under / over voltage on the
battery side and reverse polarity (see
Specifications)
• EMC compliance to FCC Standard Part
15(B) for Class B Devices and European
Standard eN61000
• Industry leading warranty of 5 years.
PWM Battery charging Algorithm
used in Scc-1208L
Please read Section 3-1 for supplementary
information.
Fig. 2.1 (page 6) represents the 3 stages of
charging used in SCC-1208L. The charging
is carried out in 3 stages:
Stage 1 – Constant Current Bulk
Charging Stage
In this stage, the MOSFET Switch is in
“on” condition continuously till the next
Absorption Stage voltage is reached. As
the MOSFET switch is in “on” condition
continuously, the Solar Panel is connected
to the battery continuously and it
