MPPT Solar Charge Controller Configuration
The following settings must be programmed using InsightLocal to configure the MPPT Solar Charger Controller to operate in a closed-loop configuration with Discover Lithium batteries over Xanbus.
Most values are automatically communicated by the Discover batteries when connected in a closed-loop. LYNK II does not configure these settings. Some values are dynamic and will change continuously during closed-loop operation and cannot be overridden by the user.
If closed-loop communications fail, the MPPT Solar Charge Controllers will continue to operate in the Last State before communication is lost. The closed-loop operation of the system will resume if communication is re-established.
Charger Settings
Devices > MPPT Charge Controller > Configuration (Advanced) > Charger Settings
InsightLocal > Charger Settings | |
|---|---|
Equalization Voltage Set Point (V) | In a closed-loop system, the BMS disables this property. NOTE: A Lithium battery should never be equalized. |
Equalized Support (Yes/No) | |
Bulk/Boost Voltage Set Point (V) | In a closed-loop system, the BMS programs this property. |
Float Voltage Set Point (V) | |
Recharge Voltage (V) | When SOC Control is enabled for monitoring the battery, this setting is disabled. |
Absorption Voltage Set Point (V) | In a closed-loop system, the BMS programs this property. |
Absorption Time (Minutes) | Recommended: 180 minutes. |
Charge Cycle (3 Stage, 2 Stage) | Recommended: 3 Stage, to provide current for base loads. |
Maximum Charge Rate (%) | Default: 100% If required, use this setting to de-rate the charger output of each device in the system. This is not a system-wide setting. The maximum charging current delivered by the entire system should not exceed the maximum charge current rating of the entire battery system. |
Equalize Now (Yes/No) | In a closed-loop system, the BMS hides this property. |
Charge Mode (Stand-alone, Primary, Secondary, Echo) | Recommended: Primary. This sets PV charging as the priority DC charging source when available. |
Default Battery Temperature (Hot, Warm, Cold) | Default: Warm. When operating in a closed loop, the BMS communicates the internal battery temperature. |
Battery Settings
Devices > MPPT Charge Controller > Configuration (Advanced) > Battery Settings
InsightLocal > Battery Settings | |
|---|---|
Battery Type (Flooded, GEL, AGM, Custom) | Set the value to Custom. Other values conflict with the Battery Type used by the inverter-charger. |
Nominal Battery Voltage (24 V / 48 V) | Set the value to 48 V. Other values conflict with the Nominal Battery Voltage and the value used by the inverter-charger. |
Battery Capacity (Ah) | Set to the number of batteries in the system multiplied by the Discover Lithium battery's rated capacity.
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Battery Temperature Coefficient (mV/°C) | Recommended: 0 mV/°C. In a closed-loop system, the BMS communicates the battery voltage based on the internal battery temperature. |