Xantrex Technology 815-2024 Battery Charger Functions, Configuring the Freedom SW using the SCP

Freedom SW 3K2K InvChg Owners Guide.book Page 49 Wednesday, October 9, 2013 1:34 PM

Configuring the Freedom SW using the SCP

Table 11 Charger Settings Menu Description

Item	Description
Batt Type	Sets the system battery chemistry and type: Flooded, AGM, Gel, and Custom.
	Selecting Custom displays the Custom Settings item, which allows you to
	adjust the settings for each charging stage.
Custom	Displays the Custom Battery Settings menu, where you can adjust
Settings	settings specific to your battery type and installation. It is only displayed if
	Custom is selected as the Batt Type.
Batt	Selects the system battery capacity in amp hours. Setting the battery capacity to
Capacity	0 resets the charging current to its default values. Zero Ah battery capacity
	implies there is no absorption exit current criteria and absorption only exits
	when the absorption timer (default 3hrs, range 1min-8hr) expires.
Max Chg	Sets the percentage of the maximum DC output current that is available to the
Rate	charger. The maximum DC output current for different models is:
	•	Freedom SW 2012 —100 ADC
	•	Freedom SW 3012 —150 ADC
	•	Freedom SW 2024 —50 ADC
	•	Freedom SW 3024 —75 ADC
	If multiple Freedom 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).
Charge	Sets the charging method: 3Stage (bulk, absorption, float) or 2StgNoFloat
Cycle	(bulk, absorption, no float).
ReCharge	Sets the recharging volts to tell the charger to initiate charging when the battery
Volts	drains past the value setting.
Auto	Enables or disables automatic charging. When there are two or more power
ReCharge	sources for charging batteries, Auto ReCharge can be disabled to allow
	manual charging of batteries.

Table 11 Charger Settings Menu Description

Item	Description
Absorb	Sets the maximum time spent in the absorption stage, before transitioning to float
Time	or no float.
	NOTE: The Absorb Time setting resets to its default value of 180 minutes when the
	Battery Type is changed except when changing to Custom Settings. In Custom
	Settings, the Absorb Time setting will not reset to its default value.
Default	Selects the battery temperature charging compensation if a battery temperature
Batt Temp	sensor is not installed. In the absence of a battery temperature sensor, the
	charger uses one of three settings: Cold (5 °C/41 °F), Warm (25 °C/77 °F), or
	Hot (40 °C/104 °F).

Battery Charger Functions

When AC power is available, the Freedom SW can operate as a battery charger. Different battery types and chemistries require different charging voltage levels. Not charging batteries at the required levels can shorten battery life or damage the batteries. The Freedom SW is configured at the factory to work with the battery types recommended for inverter applications. If the default settings do not work for your specific installation, you can adjust the charge stage settings (as recommended by the battery manufacturer) on the Custom (Battery) Settings menu (see page 50).

NOTE: This information is provided for guidance only. Variations in battery chemistry and site-specific environmental considerations mean that you should consult your system designer or battery manufacturer for specific recommendations for appropriate battery voltage and current settings.

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