Conext™ SW Inverter/Charger Conext SW 2524 120/240 Split-phase (865-2524) Conext SW 4024 120/240 Split-phase (865-4024) Conext SW 4048 120/240 Split-phase (865-4048) Owner’s Guide 975-0638-01-01 Rev E 7-2015 TM solar.schneider-electric.
Conext SW Inverter/Charger Conext SW 2524 120/240 Split-phase (865-2524) Conext SW 4024 120/240 Split-phase (865-4024) Conext SW 4048 120/240 Split-phase (865-4048) Owner’s Guide solar.schneider-electric.
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About This Guide Purpose The purpose of this Owner’s Guide is to provide explanations and procedures for operating, troubleshooting, and maintaining the Conext SW Inverter/Charger. Scope The Guide provides safety guidelines, as well as information about operating and troubleshooting the unit. It does not provide details about particular brands of batteries. You need to consult individual battery manufacturers for this information.
About This Guide Abbreviations, Acronyms, and Symbols AC Alternating Current AGS Automatic Generator Start SCP System Control Panel BOS Balance of System SW Sine Wave DC Direct Current VAC Volts, Alternating Current PPE Personal Protective Equipment VDC Volts, Direct Current PV Photovoltaic IP20 Ingress protection rating Reference to see guide (or manual) for more information Ground AC DC LED Light Emitting Diode Denotes a steady LED Denotes a flashing LED Inv Enabled
Important Safety Instructions READ AND SAVE THESE INSTRUCTIONS - DO NOT DISCARD This guide contains important safety instructions for the Conext SW Inverter/ Charger that must be followed during operation and troubleshooting. Read and keep this Owner’s Guide for future reference. Read these instructions carefully and look at the equipment to become familiar with the device before trying to install, operate, service or maintain it.
Safety Safety Information DANGER ELECTRICAL SHOCK AND FIRE HAZARD Installation must be done by qualified personnel to ensure compliance with all applicable installation and electrical codes and regulations. Instructions for installing the Conext SW are provided in a separate installation guide for use by qualified installers only. Failure to follow these instructions will result in death or serious injury.
Safety DANGER ELECTRIC SHOCK HAZARD • For indoor use only. This inverter/charger is designed for off-grid, solar, backup, and hybrid applications. See the installation guide for information. • Do not operate the inverter/charger if it has been damaged in any way. • Do not operate the inverter/charger with damaged or substandard wiring. Wiring must be done by qualified personnel to ensure compliance with all applicable installation codes and regulations.
Safety Precautions When Working With Batteries IMPORTANT: Battery work and maintenance must be done by qualified personnel knowledgeable about batteries to ensure compliance with battery handling and maintenance safety precautions. WARNING BURN AND FIRE HAZARD • Always wear proper, non-absorbent gloves, complete eye protection, and clothing protection. • Remove all personal metal items, like rings, bracelets, and watches when working with batteries. • Never smoke or allow a spark or flame near batteries.
Safety NOTICE RISK OF INVERTER/CHARGER DAMAGE Do not exceed the maximum inverter load limit (power) on either single phase (L1/N or L2/N). See “Inverter Specifications” on page 6–2. Failure to follow these instructions can result in damage to equipment. NOTICE RISK OF INVERTER/CHARGER DAMAGE Never place the Conext SW Inverter/Charger unit directly above batteries; gases from a battery will corrode and damage the inverter/charger. Failure to follow these instructions can result in damage to equipment.
Safety FCC Information to the User This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.
Contents Important Safety Instructions Safety Information - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -vi Precautions When Working With Batteries - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - viii FCC Information to the User - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - x 1 Introduction Materials List - - - - - - - - - - - - - - - - - - - - - - - -
Contents Using the Standby Button - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - SCP Navigation - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Startup Screen - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Viewing the SCP Home Screens - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Viewing Other Screens - - - - - - - - - - -
Contents 6 Specifications Inverter Specifications- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Charger Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - AC Transfer Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Physical Specifications - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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Figures Figure 1-1 Figure 1-2 Figure 1-3 Figure 1-4 Figure 1-5 Figure 1-6 Figure 1-7 Figure 2-1 Figure 2-2 Figure 2-3 Figure 2-4 Figure 3-1 Figure 3-2 Figure 3-3 Figure 3-4 Figure 3-5 Figure 3-6 Figure 3-7 Figure 3-8 Figure 4-1 Figure 4-2 Figure 4-3 Figure 4-4 Figure 4-5 Figure 4-6 Figure 4-7 Figure 4-8 Figure 4-9 Figure 4-10 Figure 4-11 Figure 4-12 Figure 5-1 Figure 6-1 Materials List - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1–2 Load Shavi
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Tables Table 3-1 Table 3-2 Table 3-3 Table 3-4 Table 4-1 Table 4-2 Table 4-3 Table 4-4 Table 4-5 Table 4-6 Table 4-7 Table 4-8 Table 4-9 Table 4-10 Table 4-11 Table 4-12 Table 4-13 Table 4-14 Table 4-15 Table 4-16 Table 4-17 Table 4-18 Table 4-19 Table 5-1 Table 5-2 Table 5-3 Table 5-4 Front Panel LEDs - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3–4 Conext SW Home Screen States - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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1 Introduction The following topics will be covered in this chapter.
Introduction Materials List Congratulations on your purchase of the Conext SW Inverter/Charger (called Conext SW). The Conext SW has been designed to give you premium true sine wave power, ease of use, and outstanding reliability for your off-grid and power backup applications.
Key Features Key Features The Conext SW Inverter/Charger is a true sine wave inverter/charger that can be used for off-grid, backup, solar, and hybrid applications. The Conext SW Inverter/ Chargers are designed to operate with a wide variety of generators and are capable of operating in parallel with a generator for short durations to assist with starting large loads. The Conext SW is a convenient combination of an inverter, multi-stage battery charger, and transfer switch in one electronic device.
Introduction Key Features Explained Built-in Charge Formulas For the unit to perform at the highest level, the batteries must be charged correctly. The Conext SW has optimized algorithms for flooded, gel, and AGM batteries. Battery Temperature Sensor Since battery temperature is a key factor in correct charging, the charging formula must be adjusted (automatically and in real time) according to the actual battery temperature to ensure that batteries are fully charged, but not overcharged.
Basic Protection Features Multiple Unit Charging Two Conext SW Inverter/Chargers synchronize charging stages to ensure efficient charging of the battery bank. When a single unit transitions from bulk to absorption so does the other unit. In absorption, the two units must complete the absorption stage before transitioning to the next stage. Note that the two units do not load share when charging except during the bulk stage.
Introduction Grid-interactive and Other Features Load Shaving Load shaving (Load Shave) allows the Conext SW to support (or assist) the AC source in powering local loads during a defined window of time (LoadShaveStart and LoadShaveStop). See “Time-of-Use Metering” on page 1–7. It allows the inverter to control how much current can be drawn from the AC source.
Grid-interactive and Other Features NOTE: Current is regulated by placing a limit (Load Shave Amps) on the current of the AC source. Grid or Generator 10 A AC IN Conext SW 5A 15 A AC OUT AC Loads SCP DC Battery Bank Figure 1-2 Load Shaving in Action Time-of-Use Metering Utilities use time-of-use metering to set utility charges during peak usage hours and to impose a surcharge.
Introduction AC Support allows the Conext SW to support local loads by converting excess power from external DC sources connected to its battery bank. Examples of external DC sources are MPPT solar charge controllers. When local loads demand more energy from the external DC sources then extra current can be pulled in from the AC source as a last resort.
Grid-interactive and Other Features controlled by the MPPT charger so that they can control the state-of-charge of the batteries. AC power from the grid is utilized only when load demand exceeds power available from the MPPT charger for charging and supplying the loads. < 2 A* Grid AC IN Conext SW > 13 A Solar Array MPPT Solar Charge Controller AC OUT AC Loads SCP DC NOTE: Entry and exit into Enhanced AC Support is determined by the MPPT.
Introduction BULK ABSORPTION FLOAT 29 2300 BATTERY VOLTAGE 27 25 POWER CHARGE CONTROLLER OUTPUT POWER 1300 23 21 BATERY VOLTAGE 1800 800 19 300 POWER TO BATTERY 17 AC SUPPORT POWER 11:20 11:50 12:20 12:50 -200 13:20 13:50 TIME 14:20 14:50 15 Figure 1-5 Enhanced AC Support Charge Cycle Enhanced AC Support Charging Stages • BULK Phase - During this phase, all PV energy from the charge controller is diverted to the battery for maximum charging.
Grid-interactive and Other Features < 2 A* Grid NOTE: Entry and exit into AC Support Mode is determined by the battery voltage. In this case, AC support mode is engaged because actual battery voltage is above the AC support voltage level.
Introduction LOAD SHAVE set start FLOAT starts ABS starts ABS FLOAT FLOAT 2-hour delay starts LOAD SHAVE actual start PLSDelay : : : : : : Figure 1-7 Load Shaving 2-Hour Delay Example The feature also ensures that self-consumption of harvested solar energy is optimized.
Grid-interactive and Other Features Consult the manufacturer's specifications to determine if your PV inverter is compatible with Active Frequency Shift Power Curtailment. Conext SW’s AC coupling function is enabled by default (see “Advanced Features Menu” on page 4–33). NOTICE AC COUPLED PV INVERTER COMPATIBILITY AC power generated by AC coupling PV inverters with Conext SW must be consumed by AC loads or used to charge batteries.
Introduction Low Battery Cut Out Hysteresis Low battery cut out (Low Batt Cut Out) (LBCO) preserves battery life by stopping the inverter when battery voltage drops down to the LBCO value for a few seconds (see LBCO Delay below), then battery charging commences. When charging starts, the voltage level jumps a little but enough that inverting might resume abruptly. Then, battery voltage goes down again and charging starts abruptly.
2 Components and Mechanical Features The following topics will be covered in this chapter.
Components and Mechanical Features System Components The Conext SW uses Xanbus, a network communications protocol developed to send Conext SW’s operational settings and status to other Xanbus-enabled devices. You can configure and monitor the Conext SW and every Xanbusenabled device in the system using an optional System Control Panel (SCP).
System Components Xanbus-enabled Products and Other Accessories 1 / 6 9 7 10 8 4 11 2 0.9 m cable 7.
Components and Mechanical Features Conext SW Inverter/Charger Mechanical Features 1 2 TOP TOP 3 7 7 4 6 5 Figure 2-2 Conext SW Front and Side Panels Conext SW Front and Side Panels Before you begin to operate the Conext SW, review the front panel features shown in Figure 2-3 and described in the next table. A detailed view of the lights and buttons on the front panel is also shown.
Conext SW Inverter/Charger Mechanical Features Item Description 4 AC Ground terminals. See “AC and DC Terminals, Network and Communication Ports Panel” on page 2–6. 5 AC line terminals. See “AC and DC Terminals, Network and Communication Ports Panel” on page 2–6. 6 Two variable-speed cooling fans maintain a cool internal temperature of critical components. The two fans control airflow through the transformer and power compartments of the unit.
Components and Mechanical Features Conext SW AC/DC/Ports Side Panel DANGER ELECTRICAL SHOCK AND FIRE HAZARD Installation must be done by qualified personnel to ensure compliance with all applicable installation and electrical codes and regulations. Instructions for installing the Conext SW are provided in a separate installation guide for use by qualified installers only. Failure to follow these instructions will result in death or serious injury.
3 Operation The following topics will be covered in this chapter.
Operation Start Up Behavior When the Conext SW is powered up (energized) or has been reset (using the Reset button on the front panel), all of the front panel LEDs illuminate and remain on for a minimum of five seconds. During this interval, the fans also turn on as the unit executes internal diagnostics. The Conext SW inverter function is initially disabled (meaning the unit will not invert even if there is sufficient battery voltage) every time the Conext SW is energized for the first time.
Inverter Operation Using the Front Panel Inverter Operation Using the Front Panel IMPORTANT: Review the “Important Safety Instructions” on page v before operating the inverter/charger. Once the inverter/charger is installed, you can operate it in invert mode. The steps below will test the unit for normal operation using the front panel. To test the inverter using the front panel: 1. Press the Inv Enable button on the Conext SW on the front panel. The Inv Enabled LED illuminates. 2.
Operation Table 3-1 Front Panel LEDs Icon LED Status Action (or Status Item) Steady Green If generator or grid AC is unavailable You can run your appliances from and operating conditions are met, the inverter. the Conext SW will produce AC voltage to power loads. Flashing Green The inverter is in AC Support or Load Shave mode. You can run your appliances from the inverter.
Inverter Operation Using the Front Panel Operating Limits for Inverter Operation Temperature The Conext SW series of inverter/chargers will operate at rated power continuously at 77 °F (25 °C) with some models capable of continuous operation at much higher ambient temperature. However, the continuous power rating at elevated ambient temperature may differ between models. See “Environmental Specifications” on page 6–5 for full details.
Operation Battery power during AC bypass When sufficient AC is detected by the inverter/charger and the battery is sufficiently charged, the AC is automatically passed through to the loads. However, if the battery is less than 12 V (for 24-volt models), 24 V (for 48-volt model), or had been disconnected, the inverter/ charger will not pass grid AC through to the loads. NOTICE EQUIPMENT DAMAGE Do not energize and operate the inverter/charger with an AC source before connecting a battery.
Inverter Operation Using the Front Panel Operating Limits for Charger Operation By default, the maximum charger output current is the rated charger output current for the particular model. Using the SCP, you can reduce the total output if you change the maximum charge rate (Max Chg Rate) on the Conext SW Basic Settings menu or Charger Settings menu under Advanced Settings. The charger can charge batteries when the AC input voltage line-to-neutral is within the minimum and maximum range of 95 to 135 VAC.
Operation Inverter/Charger Operation using the System Control Panel (SCP) This section contains detailed information and procedures for using your Conext SW in conjunction with the SCP. If you’re using the SCP to operate or monitor the status of the unit, you may also refer to the System Control Panel Owner’s Guide. WARNING LI LIMITATIONS ON USE Do not use in connection with life support systems or other medical equipment. Failure to follow these instructions can result in death or serious injury.
Inverter/Charger Operation using the System Control Panel (SCP) SCP Features 7 Fault/Warning Standby 1 6 Enter 2 Exit 3 4 5 Feature Description 975-0638-01-01 Rev E 1 Fault/Warning light indicates a device has a fault detection or warning condition and requires attention. The light flashes when a warning occurs and turns on steadily when a fault detection occurs. 2 Enter button confirms selection of a menu item or displays the next screen.
Operation Using the Standby Button The Standby button has two functions, depending on how it is pressed. First, when only the Standby button is pressed, it can disable inverting and charging for all Conext SW units in the system. Second, when it is pressed simultaneously with the Exit button, this action puts the entire system into Standby mode. Pressing the Standby button produces the same result as disabling “Invert” and “AC Charge” from the System Settings menu on the SCP.
Inverter/Charger Operation using the System Control Panel (SCP) Viewing the SCP Home Screens The top level screens on the SCP are the Startup screen, the System Status screen, and the Device Home screens. After power is applied and the Startup screen appears, the SCP displays the System Status screen. You can view the Device Home screens for the Conext SW and other devices in the system by pressing the up and down arrows, as shown in Figure 3-2.
Operation IMPORTANT: If you are uncertain which SCP screen or menu you are viewing, you can always return to the starting point—the System Status screen—by pressing Exit repeatedly until the screens stop changing. The System Status screen displays: • Qualified AC source (if applicable) and total power to and from the source • Battery capacity and voltage level • Net battery input or output current • Total inverter loading • Time and date System Status Battery 13.8A BatLev Load AC1 240V menu 24.
Inverter/Charger Operation using the System Control Panel (SCP) Pressing the down arrow button from the Conext SW Home screen displays the Home screens for other Conext SW units and other Xanbus-enabled devices in the system. Table 3-2 Conext SW Home Screen States Conext SW Status Displayed When... Invert The Conext SW is supplying power to loads by inverting power from the batteries. AC input from the AC generator or grid is absent or out of nominal range.
Operation Viewing Other Screens This section describes the next level of screens and menus on the SCP. Select Device Menu The Select Device menu displays a list of Xanbus-enabled devices in the system, including the Conext SW and the SCP. The Select Device menu is where you can access the Setup menus for each device in the system. The length of the Select Device menu depends on how many Xanbus-enabled devices are installed.
Inverter/Charger Operation using the System Control Panel (SCP) Meters Screen The Meters screen displays total system power production, generator voltage and current status, and load voltage and current status. To view the Meters screen: ◆ On the Conext SW Setup menu highlight Meters, and then press Enter.
Operation Changing Operational Settings The following table shows the various settings you can change to effectively operate the Conext SW inverter/charger. To navigate to the Conext SW Setup menu: 1. From the System Status screen (see 1A), press Enter to view the Select Device menu. Go to step 2. Or From the Conext SW Home screen (see1B), press Enter. The Conext SW Setup menu appears. 2. Highlight the Conext SW device name, and then press Enter. 1A System Status Battery 13.
Inverter/Charger Operation using the System Control Panel (SCP) Table 3-4 Conext SW Setup menu Menu Item Description Inverter Enables or disables the inverter. See “To change an operational setting” on page 3–18. NOTE: When changing the operational setting for Inverter, remember that enabling the inverter is not the same as the inverter being turned on. An “enabled” inverter can either be on or off, that is inverting or not inverting, respectively. A “disabled” inverter cannot be turned on.
Operation CSW4024 00: Setup Meters [Enabled] Inverter [Disabled] Search Mode [Enabled] Charger [Bulk] Force Chg State [Disabled] Equalize [Operating] Mode Clear Faults/Warnings View Device Info Basic Settings [*Enabled] [Disabled] [*Enabled] [Disabled] [*Enabled] [Disabled] [*Bulk] [Float] [NoFloat] [*Enabled] [Disabled] [*Operating] [Standby] Figure 3-8 Conext SW Setup Menu Operational Settings To change an operational setting 1.
4 Configuration via SCP The following topics will be covered in this chapter.
Configuration via SCP Viewing the Firmware Revision Number You may need to view the firmware revision number (F/W Rev.) of the Conext SW when troubleshooting the unit with authorized service personnel. To view the firmware revision number: 1. From the System Status screen, press the Enter button. The Select Device menu screen appears. 2. From the Select Device screen, press the Enter button. The System Settings menu screen appears. 3.
Setting the Time and Date Setting the Time and Date The system time and date are set using the SCP. Time-stamped events such as fault detections and warnings and logged historical data require that the system be set to the correct time. The SCP has an internal clock that controls the time for all Xanbus-enabled devices in the system. You can set the time, time format, and date on the Clock menu. The Clock menu is accessible on the Select Device menu. To set the time and date: 1.
Configuration via SCP Viewing the Basic and Advanced Settings Menus Basic Settings menu The Conext SW configuration settings can be viewed in Basic and Advanced formats. The Basic Settings include configuration items you may have to adjust routinely or as part of initial setup. The Basic Settings option appears by default on the Setup menu screen. The Conext SW Basic settings include menus for configuring: • Battery type setting (see page 4–7). • Battery capacity setting (see page 4–7).
Viewing the Basic and Advanced Settings Menus Advanced Settings menu The Advanced Settings option gives you access to the full range of Conext SW settings, including everything displayed on the Basic menu. As a safeguard against unintended Advanced configuration, the SCP displays the Basic settings by default. To view the Advanced settings, you must perform a special keypress. NOTICE EQUIPMENT DAMAGE The advanced settings are intended for qualified installation/service personnel only.
Configuration via SCP Additionally, from Conext SW Advanced settings, you can: • Restore factory defaults • Access other advanced features To view the Advanced Settings menu: ◆ From the Setup menu, with Advanced Settings highlighted, press Enter. See Figure 4-2.
Configuring Basic Settings Configuring Basic Settings An overview of the Conext SW Basic Settings menu structure is shown below. [*Flooded] [Gel] [AGM] [*250Ah] [50Ah] to [1000Ah] CSW4024 00: Basic [Flooded] Batt Type [220Ah] Batt Capacity [80%] Max Chg Rate [3Stage] Charge Cycle [25.0V] ReCharge Volts [30.0A] AC In Breaker Low Batt Cut Out [21.0V] [*80%] [10%] to [100%] [*3Stage] or [2StgNoFloat] [*25.0V] [*30.0A] [*21.0V] [22.0V]to [29.0V] [5.0A] to [30.0A] [20.0V]to [24.
Configuration via SCP Table 4-2 Basic Settings Max Chg Rate Sets the percentage of the maximum DC output current that is available to the charger. The maximum DC output current for different models is: SW 2524 120/240 — 65 ADC SW 4024 120/240 — 90 ADC SW 4048 120/240 — 45 ADC If multiple Conext SWs are charging the same battery bank, set each inverter's Max Chg Rate to 1/n of the desired charge rate (where n is the number of inverter/ chargers).
Configuring Advanced Settings Configuring Advanced Settings NOTICE RISK OF DAMAGE TO CONNECTED DEVICES The advanced settings are intended for qualified installation/service personnel only. Before changing advanced settings, you must be familiar with the settings and the system-wide impact of changing those settings. Setting parameters incorrectly could damage connected equipment (such as batteries) or could severely affect the performance of your system.
Configuration via SCP Table 4-4 Inverter Settings Description Item Description Low Batt Cut Out Same description as “Basic Settings” on page 4–7. LBCO Hysteresis See “Low Battery Cut Out Hysteresis” on page 4–11. LBCO Delay LBCO Delay controls how long the inverter is allowed to operate at or below the Low Batt Cut Out level before turning off due to a low battery voltage condition.
Configuring Advanced Settings Using the Low Battery Cut Out and LBCO Delay Settings The Low Batt Cut Out setting is the lowest battery voltage level acceptable for use by the inverter. When the batteries discharge to the Low Batt Cut Out setting and are held at or below this level for the LBCO Delay time, the inverter output shuts down and transfers any available AC source (like an AC generator) to the charger to bring the battery level back above the Low Batt Cut Out setting.
Configuration via SCP Multiple units Search mode is automatically enabled in multiple unit installations with two paralleled Conext SW units. Only the master Conext SW operates, and the slave unit comes online only when the load exceeds approximately 60% of the rated output of the master unit. When the load drops below 20% of the master’s rated output, the slave unit turns off.
Configuring Advanced Settings Setting the Inv Block Start and Inv Block Stop to the same time disables Inverter Block. Disabling Inverter Block means that inverting is allowed to occur at any time when the right conditions for inverting exist. NOTE: In a multiple unit configuration, set the same Inverter Block settings to both the master and slave units. Charger Settings Menu The Charger Settings menu provides options for configuring the Conext SW to operate from your battery bank.
Configuration via SCP Table 4-5 Setting Defaults and Ranges Model 24-Volt Models Item Default Min 48-Volt Model Max Default Min Max ReCharge Volts 25.0V 22.0V 27.0 50.0V 44.0V 58.
Configuring Advanced Settings Table 4-6 Charger Settings Menu Description Item Description Auto Charge Enable When this setting is enabled, it overrides the “Charger” function to begin charging automatically when qualified AC is present. This happens even when the charger function is previously disabled. Chg Block Start Sets the time to halt charging. See “Using Charger Block” on page 4–18 for more information. Chg Block Stop Sets the time to resume charging.
Configuration via SCP Table 4-7 Preset Bulk Voltage Settings for Different Battery Types Absorption Stage Battery Type 24-Volt Models Preset Bulk Voltage 48-Volt Model Preset Bulk Voltage Custom 28.8V (changeable) 57.6V (changeable) LithiumIon 29.0V (changeable) 58.0V (changeable) Absorption charge is the second stage of battery charging and provides the batteries with a controlled, constant voltage. During this stage, the current drawn by the batteries slowly decreases.
Configuring Advanced Settings NOTE: The battery voltage can increase above the float voltage when using an external charging device such as PV arrays, wind turbines, or micro-hydro generators. Be sure to include appropriate charge management equipment with all external DC sources. Table 4-9 Preset Float Voltage Settings for Different Battery Types Two-Stage Battery Type 24-Volt Models Preset Float Voltage 48-Volt Model Preset Float Voltage Flooded 27.0V 54.0V Gel 27.6V 55.20V AGM 26.8V 53.
Configuration via SCP Table 4-10 Preset Equalization Voltage Settings for Different Battery Types Battery Type 24-Volt Models Preset Equalization Voltage 48-Volt Model Preset Equalization Voltage Custom 32.0V (changeable) 64.0V (changeable) LithiumIon not applicable not applicable To start equalizing the batteries: ◆ On the device Setup menu, highlight Equalize and select Enabled. NOTE: Only flooded or vented batteries should be equalize-charged.
Configuring Advanced Settings If the charger is operating (that is, in Float, Absorption, Bulk, or Equalize stage) at the Chg Block Start time, charging stops immediately and the charger enters an idle state identical to No Float (see “Two-Stage” on page 4–17). When the Charger Block period is over, the charger does not resume the charge stage that Chg Block Start interrupted. Instead, if the batteries are above the ReCharge Volts setting, the charger remains idle.
Configuration via SCP Table 4-11 Setting Defaults and Ranges Model 24-Volt Models 48-Volt Model Item Default Min Max Default Min Max Absorb Voltage 28.8V 24.0V 32.0V 57.6V 40.0V 64.0V Float Voltage 27.0V 22.0V 32.0V 54.0V 50.0V 64.0V Batt Temp Comp -54mV/C -0mV/C -90mV/C -108mV/C -0mV/C -108mV/C The Custom Battery Settings menu can be viewed if Custom is selected as the Batt Type.
Configuring Advanced Settings LithiumIon Battery Settings Menu WARNING BATTERY TYPE HAZARD When using Lithium Ion batteries, ensure that the battery pack being used includes a Battery Management System (BMS) with safety controls. Failure to follow this instruction can result in property damage, death or serious injury. LithiumIon Settings appears only when Batt Type is set to LithiumIon.
Configuration via SCP Table 4-13 Setting Defaults and Ranges Model 24-Volt Models 48-Volt Model Item Default Min Max Default Min Max DisChgImax Timer 10s 1S 300s 10s 1s 300s The LithiumIon Settings menu can be viewed if LithiumIon is selected as the Batt Type. This menu allows you to adjust charging and equalization voltage for batteries with specifications that fall outside the default settings for the battery types the Conext SW offers.
Configuring Advanced Settings CSW4024 00: Adv CSW4024 00: AC Inverter Settings Charger Settings AC Settings AC Support Multi Unit Config Restore Defaults Adv Features ACIn ACIn ACIn ACIn ACIn Breaker Lo Volt Hi Volt Lo Freq Hi Freq [30.0A] [190.0V] [270.0V] [55Hz] [65Hz] [*30A] [5A] to [30A] [*190.0V] [156.0V] to [230.0V] [*270.0V] [250.0V] to [280.
Configuration via SCP Table 4-16 AC Settings menu Item Description ACIn Hi Volt Sets the maximum acceptable AC input voltage level from the AC source (generator or grid). ACIn Lo Freq Sets the minimum acceptable AC input frequency from the AC source (generator or grid). ACIn Hi Freq Sets the maximum acceptable AC input frequency from the AC source (generator or grid).
Configuring Advanced Settings Table 4-17 AC Support Menu Description and Valuesa Setting Description Default Range Load Shave Enables or disables the load shaving feature. When in this mode, the Conext SW operates until the batteries discharge to the Low Batt Cut Out threshold, after which the unit starts charging the batteries. The charger is automatically blocked during the load shaving time window.
Configuration via SCP AC Support Mode Setting When AC Support Mode is enabled, the Conext SW does not ordinarily draw a large amount of current from the grid. If the Conext SW is drawing more current than expected, notice that it cannot distinguish between real power and reactive power. Large current draw will only affect reactive power and not real power, and utility companies generally only charge by real power consumed.
Configuring Advanced Settings an From AC Support -> AC Support on SOC Press Enter, then select Enabled using the up and down arrow buttons. Press Enter. CSW4024 00: AC Support LoadShaveStart [12:00 AM] LoadShaveStop [12:00 AM] [Enabled] AC Supp on Soc AC Supp Start Soc [80%] 4. Set the battery SOC thresholds for when AC support mode is engaged. From AC Support -> AC Supp Start Soc Press Enter, then select a value using the up and down arrow buttons. Press Enter.
Configuration via SCP 2. Set the load shaving amps. From AC Support -> Load Shave Amps Press Enter, then select a value of 10 using the up and down arrow buttons. Press Enter. CSW4024 00: AC Support [Enabled] AC Supp Mode AC Supp Voltsp [Disabled] [Enabled] Load Shave [10A] Load Shave Amps 3. Set the load shaving start and stop times. From AC Support -> LoadShaveStart Press Enter, then a time of 6:00 AM using the up and down arrow buttons. Press Enter.
Configuring Advanced Settings Enhanced AC Support Setting Self-consumption The goal of the enhanced AC support (EnhancedACSup) feature is to make sure that the power system self-consumes the power it harvests from a PV array. It does this by keeping the battery bank charged up and ready to supply power to the loads. When EnhancedACSup is enabled, the Conext SW supports local loads by converting excess capacity from external DC sources connected to its battery bank.
Configuration via SCP CSW4024 00: Adv CSW4024 00: Multi Inverter Settings Charger Settings AC Settings AC Support Multi Unit Config Restore Defaults Adv Features Dev Name Dev Number Invtr Mode AC In Battery [CSW4024] [00] [Master] [Gen1] [HouseBatt1] [*Master] [Slave] [*Gen1] [Grid1] [*HouseBatt1]...[HouseBatt5] Follow procedures on “To select and change a configurable setting:” on page 4–6 to change the settings.
Configuring Advanced Settings When installing a multiple unit system, every setting on the Multi Unit Config menu (except for Dev Name) must be configured for each of the two Conext SW units in the system. The settings should be configured in the following order: Dev Number then Invtr Mode. AC In setting The Conext SW accepts only a single AC source - either from the grid or from a generator.
Configuration via SCP 4. When the correct character is shown, press Enter to select it. 5. After pressing Enter to select the last character of your customized device name, press Enter again to return to the menu. Setting the Device Number Setting the device number gives a Xanbus-enabled device a unique identity when several devices of the same type are installed in the networked power system.
Configuring Advanced Settings Restoring Factory Default Settings The Restore Defaults command returns the Conext SW to factory default settings. After using the Restore Defaults command, the Conext SW is no longer configured for the power system. NOTICE EQUIPMENT DAMAGE Do not use the Restore Defaults command while the Conext SW is operating. De-energize the power system and disconnect the Conext SW AC input before using the Restore Defaults command.
Configuration via SCP Table 4-19 Adv Features Description and Valuesa Item Description Default Range StoreInv State See “Storing the State of the Inverter Mode” on page 1–13. Enabled Enabled, Disabled AcCouple For information on this feature refer to the AC Coupling Solutions Guide. Disabled Enabled, Disabled Enhanced ACSup See “Enhanced AC Support” on page 1–8.
Configuration Sheet Configuration Sheet SETTING DESCRIPTION DEFAULT 24-volt DEFAULT 48-volt Inverter Settings Low Batt Cut Out Select battery voltage below which batteries will be cut out 21.0V 42.0V LBCO Delay Select the time delay before low battery cut out is engaged 10sec 10sec Hi Batt Cut Out Select the voltage above which batteries will be cut out 29.0V 58.
Configuration via SCP SETTING DESCRIPTION DEFAULT 24-volt DEFAULT 48-volt Multi Unit Config Select unique device Name for each unit CSW4024 CSW4048 Dev Name CSW2524 Dev Number Select unique device number for each unit 00 Invtr Mode Select Master or Slave designation for each unit Master Master AC In Select AC source type Gen1 Gen1 Battery Identify batteries HouseBatt1 HouseBatt1 Restore Defaults Restore Defaults Restores all system default settings -- -- Advanced Features Euro
5 Troubleshooting The following topics will be covered in this chapter.
Troubleshooting General Troubleshooting Guidelines This section will help you narrow down the source of any problem you may encounter. Please read the following troubleshooting steps: 1. Check for a warning or fault detection message on the SCP or a fault code on the inverter information panel. If a message is displayed, record it immediately. 2. As soon as possible, record the conditions at the time the problem occurred.
Inverter Applications Inverter Applications The Conext SW performs differently depending on the AC loads connected to it. If you are having problems with any of your loads, read this section. Resistive Loads Resistive loads are the easiest and most efficient to drive. Voltage and current are in phase, which means they are in step with one another. Resistive loads generate heat in order to accomplish their tasks. Toasters, coffee pots, and incandescent lights are typical resistive loads.
Troubleshooting View Device Info Logs When troubleshooting, it sometimes becomes necessary to look at information logs the Conext SW keeps inside its onboard memory. Each log entry is generated automatically when a “condition” occurs and recorded accordingly in one of the information logs.
Troubleshooting the Conext SW via the SCP Troubleshooting the Conext SW via the SCP The Conext SW is designed with a number of protection features to provide efficient operation. If, however, you have any problems operating your inverter/ charger read this troubleshooting chapter. If you cannot resolve the problem, record the necessary information. This information will help Customer Service to assist you better when you contact them. DANGER ELECTRICAL SHOCK HAZARD Do not disassemble the inverter/charger.
Troubleshooting Table 5-1 Fault Detection Types and Behaviors Fault Detection type Behavior Escalating automatic Clears automatically if the fault condition goes away, just like an automatic fault detection. However, if an escalating automatic fault detection occurs several times within a defined time period, the escalating automatic fault detection becomes a manual fault detection, requiring user intervention.
Troubleshooting the Conext SW via the SCP Table 5-3 provides a detailed description of the fault detection messages and solutions. If you are unable to resolve the problem after referring to this table, contact customer service. Table 5-3 Fault Detection Messages Code Message Type Cause Solution F1 AC Output under voltage Escalating Auto fault detection. Must occur 3 times in 30 seconds before becoming a manual fault detection. Inverter voltage is under 210 volts. Remove excessive load.
Troubleshooting Table 5-3 Fault Detection Messages Code F47 Message DC Under Voltage (Immediate) Type Automatic Cause Solution Immediate battery Check battery condition under voltage fault. (short or open cells) and ensure correct voltage. Battery state charge or capacity is so low that the DC voltage collapses when inverter load is applied. Inverter load is so large that the DC voltage collapses when inverter load is applied.
Troubleshooting the Conext SW via the SCP Table 5-3 Fault Detection Messages Code F57 Message FET1 Over Temperature Type Automatic Cause Solution Ambient temperature may be too high. Ensure adequate ventilation around the Conext SW. Operating too large of a load for too long while inverting. Remove excessive inverter loads. Inverter cooling fan may have stopped working. If the temperature is above 104 °F (40 °C), the fan should be on.
Troubleshooting Table 5-3 Fault Detection Messages Code Message Type Cause Solution F73 Transformer Temp unreadable Automatic Temperature sensor is damaged. Service required. F74 Other Unit Invert Fault Automatic In a Multi Unit configuration—if one of the units detects a fault that needs to be resolved. Clear the primary fault on the unit that caused this fault to be detected.
Troubleshooting the Conext SW via the SCP Table 5-3 Fault Detection Messages Code Message Type Cause Solution F89 Battery Discharge Over Current Escalating There is an excessive load on the Li-ion battery. This fault applies only to Li-ion batteries. Change the default threshold of the max battery discharge current limit or reduce the load. F90 External BMS Disconnected Automatic Communication has been lost with the Battery Management System of the Liion battery.
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6 Specifications NOTE: Specifications are subject to change without prior notice.
Specifications Inverter Specifications NOTE: All inverter specifications are at nominal conditions: ambient temperature of 77 °F (25 °C), 24 VDC, unless otherwise specified.
Charger Specifications DC Input SW 2524 120/240 SW 4024 120/240 SW 4048 120/240 No-load power draw (Inverter On) 21 W 26 W 27 W Low battery voltage shutdown cut-off (other values selectable) 21.0 V (default) 21.0 V (default) 42.0 V (default) High battery voltage shutdown 33.0 V cut-off (default) (other values selectable) 33.0 V (default) 62.
Specifications DC Output SW 2524 120/240 SW 4024 120/240 SW 4048 120/240 With a battery temperature sensor (provided) The temperature compensation coefficients on a 24-volt battery are as follows: Flooded: 54 mV × (25 °C – BTS °C) Gel: 54 mV × (25 °C – BTS °C) AGM: 42 mV × (25 °C – BTS °C) The temperature compensation coefficients on a 48-volt battery are as follows: Flooded: 108 mV × (25 °C – BTS °C) Gel: 54 mV × (25 °C – BTS °C) AGM: 42 mV × (25 °C – BTS °C) AC Input SW 2524 120/240 SW 4024 120/240 S
Physical Specifications Physical Specifications SW 2524 120/240 SW 4024 120/240 SW 4048 120/240 L×W×H 15.2×13.5×7.6 in (387×343×197 mm) 15.2×13.5×7.6 in (387×343×197 mm) 15.2×13.5×7.6 in (387×343×197 mm) Unit Net Weight 50.7 lbs. (23 kg) 67.2 lbs. (30.5 kg) 67.2 lbs. (30.
Specifications Regulatory All Models Safety UL 1741 Ed. 2, UL 1778 Ed. 4 CSA C22.2 NO. 107.1-01, CSA C22.2 NO.
Index Numerics Exit button 9 2-stage charge mode 17 F A ABS Finish 13 Absorption 13 absorption charging stage 16 AC bypass 6 AC settings menu description 22 AC Support 13 Ac support menu description 24 ACGood 13 Adjustable frequency 3 Advanced menu 5 automatic generator start 11 fault/warning LED Xanbus System Control Panel) 9 Float 13 float charging stage 16 H High surge capacity 3 I Information about Your System form ii Invert 13 inverter serial number ii Inverter Block, start and stop 12 inverter s
Index R restore default settings 33 S Schneider Electric web site iv search mode 17, 9, 10, 11 serial number ii standby button 9, 10 system home screen 11 system standby mode 10 T Temperature-controlled 3 troubleshooting general guidelines 2 motor loads 3 problem loads 3 resistive loads 3 True Sine Wave output 3 two-stage charge mode 17 U Up arrow button 9 X Xanbus SCP device setup menus 14 features 9 select device menu 14 Xanbus-enabled 3 IX–2 975-0638-01-01 Rev E
Schneider Electric solar.schneider-electric.com As standards, specifications, and designs change from time to time, please ask for confirmation of the information given in this publication. © 2014 Schneider Electric. All rights reserved.
