Samlex America SCC-30AB - Manuel (Page 45)

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6
InstallatIon & operatIon
Typical Equalization
As soon as Equalization is activated, following indications will be seen:
• Status LED (2, Fig 5.1) will be steady Orange
• Screen 4 (Fig. 5.3) will show “State: Equalization”
• Screen 6 (Fig. 5.3) will display Equalization parameters related to the programmed battery
type/charging algorithm (Table 6.1)
• Once the battery is overcharged and its voltage rises to the Equalization Voltage Regulation
Set Point and is sustained at this level for the programmed period, the charger will revert to
Float Stage – Status LED will be steady Green and Screen 4 will show “State: Float”.
NOTE: If for any reason charging current is not sufficient to raise the Battery Voltage
to the Equalization Voltage Regulation Set Point and sustain this voltage for the
programmed duration, equalization will be carried forward to the following day(s) and
will continue to remain locked in Equalization Stage until cumulative time period is
achieved. Equalization may be terminated manually and re-started when adequate sun is
available. Also, please remove all loads on the battery to ensure that full current from the
panels is available to complete equalization in one session.
Temperature Compensated Battery Charging
Please read background information on temperature compensation under heading
“Effect of Temperature on Battery Voltage” on page 15.
An optional Battery Temperature Sensor (BTS), Model No. DC-BTS-A-C is available for
temperature compensated battery charging.
CAUTION!
The wiring of the Temperature Sensor is polarized and is marked (+) and (-). Please observe
correct polarity of connection to terminals BTS+ and BTS-.
BTS consists of a temperature sensing probe that is installed on the (-) Negative
battery post (Fig. 6.2). The temperature of the battery post reflects the approximate
temperature of the electrolyte. A pair of 10 metres wires (marked + & -) connect the
temperature sensing probe to the 2 terminals marked (+) BTS and (-) BTS at the back
of the unit (Figs. 5.2 & 6.2).
As the battery gets warmer, the gassing increases. As the battery gets colder, it
becomes more resistant to charging. Depending on how much the battery electrolyte
temperature varies, it is important to adjust the charging for temperature changes.
Various voltage set points given in the specifications are indicated at a reference temperature
of 25ºC / 77ºF.
It is recommended that the optional Battery Temperature Sensor (BTS) Model No.
DC-BTS-A-C may be used if the battery electrolyte temperature (measured at the
+ terminal stud) varies more than 5ºC to 10ºC (9ºF to 18ºF) from the reference
temperature of 25ºC (77ºF).