AMC pm-scc-80 am User Manual

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1.5 Shunt (BCS) 
The Shunt is an optional component and it is required for the Premium MPPT Series 
to achieve to the optimal operation levels and it functions as a hub for connecting 
measurement sensors. The main purpose of the shunt is to allow the Premium MPPT 
Series to measure current drawing into and out of the battery.   
DC load centers is where the Premium 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 Premium MPPT Series requires BTS-3 to be connected for all charging features 
to be available. Premium 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 
negative 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 
charging. Be sure to observe correct polarity when installing voltage sense wires or 
damage will result.   
 
1.8 Wiring Diagram 
Before starting to initiate the Premium MPPT Series, keep all breakers in the OFF 
position. When you are ready to start the Premium MPPT Series, turn on ONLY the 
Battery breaker. Do NOT turn on the PV breaker until the instruction on LCD shows 
during Premium MPPT Series initialization. The internal electric circuit of the 
Premium MPPT Series can only be powered by the batteries. 
The installation environment of Premium MPPT Series should be in an area of good 
ventilation. Never locate the Premium MPPT Series in a poorly ventilated battery area 
because batteries emit the explosive gases. Do not locate the Premium MPPT Series 
within 1 meters of the batteries to ensure the safety condition. 
See next page for the wiring diagram of PM-SCC-80AM as an example.