Table of Contents
Advertisement
1.5 Shunt (BCS)
The Shunt is an optional component and it is required for the OPTI-Solar SC MPPT
Series to achieve to the optimal operation levels and it functions as a hub for connect-
ing measurement sensors. The main purpose of the shunt is to allow the OPTI-Solar
SC MPPT Series to measure current drawing into and out of the battery.
DC load centers is where the OPTI-Solar SC MPPT Series Shunt is recommend to be
placed at. Or installing it in an electrical enclosure is also acceptable. Locating the
Shunt is essential for safety. Please note that the capacity of the Shunt is 50mV,
500Amp. See page 2-3 for wiring connection terminal.
1.6 Battery Temperature Sensor (BTS-3)
The battery temperature sensor BTS-3 is used to compensate charging by adjusting
charging voltage up or down according to the temperature detected by the sensor, see
page 2-3 for wiring connection terminal.
The OPTI-Solar SC MPPT Series requires BTS-3 to be connected for all charging
features to be available. OPTI-Solar SC MPPT Series is able to operate without the
sensor but Absorption Trigger set points will be lower and equalization stage will be
disabled. BTS-3 can be mounted on the battery posts.
1.7 Battery Voltage Sensing (BVS)
Connecting the red wire to a battery positive bus and the black wire to a battery nega-
tive bus within the DC load center, see page 2-3 for wiring connection terminal. Two
sense wires may be connected to compensate possible battery cable loss during charg-
ing. Be sure to observe correct polarity when installing voltage sense wires or damage
will result.
1.8 Wiring Diagram
Before starting to initiate the OPTI-Solar SC MPPT Series, keep all breakers in the
OFF position. When you are ready to start the OPTI-Solar SC MPPT Series, turn on
ONLY the Battery breaker. Do NOT turn on the PV breaker until the instruction on
LCD shows during OPTI-Solar SC MPPT Series initialization. The internal electric
circuit of the OPTI-Solar SC MPPT Series can only be powered by the batteries.
The installation environment of OPTI-Solar SC MPPT Series should be in an area of
good ventilation. Never locate the OPTI-Solar SC MPPT Series in a poorly ventilated
battery area because batteries emit the explosive gases. Do not locate the OPTI-Solar
SC MPPT Series within 1 meters of the batteries to ensure the safety condition.
See next page for the wiring diagram of SC-80 as an example.
1-2
Advertisement
Table of Contents
