Conext SW 4048-120 Manual Addendum

ManualsBrandsSchneider Electric ManualsSolar & Wind PowerConext SW 4048 3,800 Watts, 48VDC Inverter/Charger for Split-phase 120/240 VAC

Purpose

The purpose of this Documentation Update is to explain new features of the

Conext SW (CSW) unit. It supplements the Conext SW Owner’s Guide (Document

Number: 975-0636-01-01).

Audience

This Documentation Update is intended for users and operators of the Conext

SW Inverter/Charger.

Summary of Updates

• Conext SW New Features

• Accessing the New Features by SCP

• Load Shave Setting

• AC Support Mode Setting

• Enhanced AC Support Setting

Conext™ SW Inverter/Charger

Documentation Update

976-0315-01-01

Rev E

DANGER

RISK OF FIRE, ELECTRIC SHOCK, EXPLOSION, AND ARC FLASH

This Documentation Update is in addition to, and incorporates by reference,

the relevant product manuals for each product in the Conext SW Inverter/

Charger. Before reviewing this Documentation Update you must read the

relevant product manuals. Unless specified, information on safety,

specifications, installation, and operation is as shown in the primary

documentation received with the product. Ensure you are familiar with that

information before proceeding.

Failure to follow these instructions will result in death or serious injury.

Summary of content (18 pages)

PAGE 1
Conext™ SW Inverter/Charger Documentation Update 976-0315-01-01 Rev E DANGER RISK OF FIRE, ELECTRIC SHOCK, EXPLOSION, AND ARC FLASH This Documentation Update is in addition to, and incorporates by reference, the relevant product manuals for each product in the Conext SW Inverter/ Charger. Before reviewing this Documentation Update you must read the relevant product manuals.
PAGE 2
Documentation Update Conext SW New Features Load Shaving Load shaving (Load Shave) allows the CSW 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 3. It allows the inverter to control how much current can be drawn from the AC source.
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Documentation Update 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 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.
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Documentation Update allows the CSW 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.
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Documentation Update 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 Loads AC OUT SCP DC NOTE: Entry and exit into Enhanced AC Support is determined by the MPPT.
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Documentation Update 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. During this phase, the CSW does not engage AC support. • ABSORPTION Phase - Once the charge controller is in absorption phase, the charge controller output is split between the battery and CSW for supporting AC loads.
PAGE 7
Documentation Update allows the battery to be fully charged before either load shaving or AC support mode is engaged. This feature is useful in applications where battery microcycling is to be minimized in order to maximize battery life. See below. Example: Load Shave = Enabled LoadShaveStart = 10:00AM PLSDelay = Enabled Absorption to float charging starts at 7:00 AM and load shaving is set to start at 10:00 AM.
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Documentation Update balance between generation and consumption. As the battery bank reaches capacity, CSW curtails PV inverter generation by raising the AC line frequency causing compatible PV inverters to reduce their power output in an orderly manner. This is called Active Frequency Shift Power Curtailment. During a grid outage even a home with a grid-tie PV inverter system will be without power because PV inverters cannot produce power without the presence of a reference voltage and frequency.
PAGE 9
Documentation Update NoLoadVD The No Load Voltage Derating (NoLoadVD) feature further reduces tare loss by adjusting output voltage by +4%/-5% of nominal, over the full load range. That means at 50% load, the output voltage is at nominal but 5% below nominal at No Load. The feature results in slight increase on overall operating efficiency but may result in visible flicker of incandescent or similar lights during large sudden load changes. See “New Advanced Features Setting” on page 12.
PAGE 10
Documentation Update Accessing the New Features by SCP The Advanced Settings option gives you access to the full range of CSW 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 RISK OF DAMAGE TO CONNECTED DEVICES The advanced settings are intended for qualified installation/service personnel only.
PAGE 11
Documentation Update AC Support Settings New feature AC Support settings contain configuration options for grid-interactive operation including AC support mode, load shaving (also applicable to generator only AC source), and enhanced AC support for DC coupled systems. CSW4024E 00: Adv Inverter Settings Charger Settings AC Settings AC Support Multi Unit Config Restore Defaults Adv Features CSW4024E 00: AC Support [Enabled] AC Supp Mode [26.
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Documentation Update Table 1 AC Support Menu Description and Valuesa Setting Description Default Range LoadShave Start LoadShave Stop AC Supp on Soc Sets the time for when load shaving is engaged. 12:00 AM Sets the time for when load shaving is disengaged. 12:00 AM Setting the Load Shave Start and Load Shave Stop to the same time disables scheduling. Enables or disables the SOC monitoring for AC Support Mode.
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Documentation Update Table 2 Adv Features Description and Values Item Description Default Range PLSDelay Delays load shaving and AC support features until the MPPT has charged the battery in float mode for 2 hours. See “GridInteractive Delay Feature” on page 6. Disabled Disabled, Enabled NoLoadVD See “NoLoadVD” on page 9.
PAGE 14
Documentation Update Load Shave Setting For Load shaving to be effective, all loads must be connected to the inverter. For large loads, stacked CSW inverters may be required. To help the batteries supplement the power requirements of the connected load, an additional source of power (like solar, wind, or hydroelectric) is recommended but not required. To demonstrate a scenario where load shaving takes effect on the CSW, the following settings are programmed into the SCP.
PAGE 15
Documentation Update 4. Enable the grid-interactive delay feature. Go back to Advanced Settings -> Adv Features -> PLSDelay Press Enter, then select Enabled using the up and down arrow buttons. Press Enter.
PAGE 16
Documentation Update AC Support Mode Setting When AC Support Mode is enabled, the CSW does not ordinarily draw a large amount of current from the grid. If the CSW 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.
PAGE 17
Documentation Update 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. From AC Support -> AC Supp Stop Soc Press Enter, then select a value using the up and down arrow buttons. Press Enter.