1-4
1.5 Optional Available
Three optional components can be added to the standard SunStar controller at any time.
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Battery Temperature Sensor (BTS)
If the temperature of the system battery varies more than 5°C during the year,
temperature compensated charging should be considered. Because the battery’s
chemical reactions change with temperature, it can be important to adjust charging to
account for the temperature effects. The BTS will measure the battery temperature, and
the SunStar uses this input to adjust the charging as required.
The battery charging will be corrected for temperature as follows:
Charger Setpoint Temperature Compensation Chart
System Voltage
Battery Type
12VDC 24VDC 48VDC
Lead Acid
–30mV/ºC
–60mV/ºC
–120mV/ºC
Nicad –20mV/ºC
–40mV/ºC
–80mV/ºC
The BTS should be used only for battery charging and diversion control. Do not use the
BTS for load control. The charging parameters that are adjusted for temperature include:
• PWM regulation
• Equalization
• Float
• High Voltage Disconnect
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Remote LCD Meter
One Remote LCD Meter can be added to the SunStar at any time during or after
installation. The display is a 2x16 LCD meter with backlighting. One pushbuttons is
used to scroll through the displays function.
There are a series of display screens that provide information such as:
• Operating information and data
• Reset Amp-Hours
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RJ-45 Communication Cable
RJ-45 Communication Cable is used to connect the SunStars to CombiPlus or
SuperCombi Inverter/Charger. The connection of CombiPlus or SuperCombi and
SunStars can become a power management control system of standalone PV charger.
When connecting CombiPlus or SuperCombi to SunStars in parallel, the maximum units
can go up to 10 SunsStars. The optional RJ-45 Communication Cables can be supplied
in the following length.
• RJ-45-01 (1 Meter long Communication Cable)
• RJ-45-03 (3 Meter long Communication Cable)
• RJ-45-05 (5 Meter long Communication Cable)
• RJ-45-10 (10 Meter long Communication Cable)
