APPLICATION NOTE: XANBUS ENABLED DISCOVER ADVANCED ENERGY SYSTEMS AND SCHNEIDER ELECTRIC CONEXT INTEGRATION Revision Date Revision Author Description of Change 03/22/2017 C Brendon Sauer Formatting and content update #4 -13511 Crestwood Place, Richmond, BC, V6V 2E9, Canada + 1.778.776.3288 info@discoverbattery.com DOCUMENT NUMBER 885-0001 DOCUMENT REVISION REV C discoverbattery.
885-0001 REV C OVERVIEW This Application Note provides information about the integration of Discover Xanbus enabled AES batteries with the Schneider Electric Conext system and related components. There are some notable performance and configuration differences when comparing your AES installation against conventional lead batteries. Plug and play communications automatically configure the charge and discharge settings of the Inverters and charge controllers.
885-0001 REV C TABLE OF CONTENTS 1. Safety 4 5.3 Off-Grid with DC-Coupled Solar and Generator 12 1.1 Warnings, Cautions, Notes and Symbols 4 5.4 Back-Up with Peak Load Shaving 13 1.2 General Warning 4 6. System Operating Modes 13 1.3 Fire and Electric Shock Risk 4 6.1 Back-Up / Off-Grid 13 1.4 Chemical Risk 5 6.2 Grid Sell 13 1.5 Do’s 5 6.3 Pass Through 13 1.6 Do Not’s 5 6.4 Peak Load Shaving 14 2. Operating Limits 5 6.5 AC Coupled Charging 14 5 6.
885-0001 REV C 1. SAFETY 1.1 Warnings, Cautions, Notes and Symbols ▲ WARNING Important information regarding possible personal injury. ▲ CAUTION Important information regarding possible equipment damage. ▲ NOTE Additional information concerning important procedures and features of the battery. 1.2 General Warning For battery handling, refer to Discover® AES Batteries Product Manual.
885-0001 REV C 1.4 Chemical Risk ▲ WARNING Lithium batteries are chemical risk if misoperated, mishandled or abused. 1.5 Do’s • • • • • • • Do protect terminals from short circuit before, during, and after installation Do wear electrically insulated gloves Do use electrically insulated tools Do wear eye protection Do wear safety toe boots / shoes Do read user manual for battery handling instructions Do secure battery safely 1.
885-0001 REV C ▲ CAUTION Do not install batteries in series. Select the appropriate AES battery model for the voltage of your system. ▲ CAUTION Intentional bypassing of BMS to operate battery outside maximum and minimum limits voids warranty. 3. BATTERY BANK SIZING 3.1 Depth of Discharge Conventional lead acid batteries should be designed to discharge only 50% of their nominal capacity on a regular basis.
885-0001 REV C 3.3 Power and Energy Requirements Energy (Wh) is calculated by multiplying the amount of power (W) used for a given amount of time (hours). This applies to both charging and discharging the battery. Example: A typical coffee pot draws 1000 W of power when in use. If the pot is on for 30 min (0.5 hours) the amount of energy used would equal 500 Wh: Coffee Pot Power (W) × Time in use (hours) = Total Energy (Wh) 1000 W × 0.5 hours = 500 Wh Table 2.
85-0001 REV C Table 5. Worksheet for calculating daily energy requirements Load Watts Hours Per Day Days Per Week Weekly Watt Hours Total Weekly Watt-hours of AC load Divided by Days per Week Average total watt-hours per day Table 6.
885-0001 REV C 4.
885-0001 REV C 4.5 Xanbus Networking Xanbus enabled devices communicate with each other over the Xanbus network sharing settings, activity and other updates. It is a requirement for one AES battery to be connected to the Xanbus network, this battery will communicate battery bank settings, activity and real time status to the other devices on the Xanbus network.
885-0001 REV C The Network Terminators are required for proper functionality of the AEBus network. Care should be taken to ensure they are installed. ▲ CAUTION All AES batteries in a battery bank are required to be connected to the AEBus network. Failure to do so could result in equipment damage. 5. APPLICATION CONFIGURATIONS 5.1 Grid-Tie with DC Coupled Solar This configuration will primarily keep the batteries fully charged from solar. When there is excess solar it will be sold back to the grid.
885-0001 REV C Typical operating modes for this configuration: Back-up/Off-grid, Grid Sell, Peak-Load Shaving, Pass Through, AC Coupled Charging, and Grid Charging. Conext Inverter Conext Combox Conext System Control Panel Mains Load Panel Critical AC Load Panel Xanbus DC AC AC Coupled Solar Power Battery Max Power Grid-Interactive Inverter Critical Load AES Battery Figure 7. Grid-Tie with AC Coupled Solar diagram. 5.2.
885-0001 REV C Automatic Gen Starter Conext Inverter Conext ComBox Conext System Control Panel Critical AC Load Panel Xanbus DC AC Solar Charger Controller AES Battery Figure 8. Off-Grid with DC Coupled Solar and Generator diagram. 5.4 Back-Up with Peak Load Shaving This configuration is typically installed in areas with weak and unstable grids that experience frequent blackouts, or installations that need to limit grid consumption due to tier based pricing based on power and energy tiers.
885-0001 REV C 6.4 Peak Load Shaving 6.5 AC Coupled Charging 6.6 DC Coupled Charging / Auxiliary DC Charging = ~ ~ = Peak Load Shaving can be used when the user wishes to limit the power consumed from the grid. The power to supply the loads is inverted from the batteries. The inverter can be set to consume energy from the batteries when the load demand exceeds the programed level during set hours of the day.
885-0001 REV C 7. CONFIGURATION SETTINGS 7.1 Fixed Settings AES fixed settings are automatically set by AES batteries when they are connected via Xanbus. These settings will automatically be reset by the AES battery if inadvertently adjusted by the user. Table 9. Settings Auto Configured by AES Batteries through Xanbus Network. Nominal System Voltage Settings 24V Low Batt Cut Out (LBCO) 48V 24 V 48 V Batt Type Custom High Batt Cut Out 29.2V 58.4 V Low Batt Cut Out Hyst 1.8V 3.
885-0001 REV C Table 12. Recommended User-Adjustable Settings for the SW Inverter/Charger. Settings Nominal System Voltage Description AC Supp on SoC Enables the SOC monitoring for AC support mode AC Supp Start SoC Sets high SOC value required for AC support to engage AC Supp Stop SoC Sets low SoC value for AC support to disengage ReCharge Volts Setting ReCharge Volts Higher allows for more back-up capacity.
885-0001 REV C 8. BATTERY OPERATION 8.1 Monitoring Discover AES reports to the Conext SCP and/or Combox as a battery monitor (BATTMON) device. The AES batteries provide significantly more accurate battery parameter readings than the inverters and charge controllers are capable of. 8.2 Battery Charging Absorption Balance 100% 57.6 80% 54.4 60% 51.2 40% 48 20% 44.8 Voltage - U Battery Voltage [V] Charge Current % of Bulk Charge C-Rate [%] Bulk Current - I Figure 10.
885-0001 REV C 10. WIRING DIAGRAMS 10.1 Single Battery Wiring Diagram ▲ WARNING Bridging Adapter Xanbus Negative connection to DC terminals of Inverter or combiner box ELECTRICAL SHOCK AND FIRE HAZARD Installation must be done by qualified personnel to ensure compliance with all applicable installation codes. Instructions for installing the batteries are provided in this installation guide for use by qualified installers only.
885-0001 REV C 10.2 Dual Battery Wiring Diagram Xanbus ▲ WARNING Bridging Adapter Network Terminator Fused Disconnect Negative connection to DC terminals of Inverter or combiner box ELECTRICAL SHOCK AND FIRE HAZARD Installation must be done by qualified personnel to ensure compliance with all applicable installation codes. Instructions for installing the batteries are provided in this installation guide for use by qualified installers only.
885-0001 REV C Network Terminator Fused Disconnect Fused Disconnect ▲ WARNING Bridging Adapter Fused Disconnect Fused Disconnect Fused Disconnect Negative connection to DC terminals of Inverter or combiner box ELECTRICAL SHOCK AND FIRE HAZARD Installation must be done by qualified personnel to ensure compliance with all applicable installation codes. Instructions for installing the batteries are provided in this installation guide for use by qualified installers only.
