Blue Sky IPN Pro - Manual (Page 11)

Installation and Operation Manual
10
IPN-ProRemote SETUP
¾ The IPN-ProRemote has various setup parameters all of which are preconfigured at the factory. Most installations require no
setup changes other than increasing Acceptance Charge Time to 4 hours, and entering actual battery Amp-Hours and Self
Discharge Rate. Factory default settings shown below reside in the IPN-ProRemote. All other settings shown in the Setup and
Battery Charge Parameters menus reside in the charge controller.
As Shipped Factory Default Settings
Factory defaults are configured for two or four (12V or 24V respectively) deep cycle lead-antimony 6V GC2 golf cart batteries in series.
• Amp-hours .................................................. 220 amp-hours • Self Discharge Rate ................................................ 12%/month
• Charge Efficiency ....................................... 94% • LCD Backlight .......................................................... Auto
• Charge Efficiency Mode ............................ Auto Adjust
Restoring Factory Default Settings
¾ Factory defaults can be easily restored into the IPN-ProRemote and accompanying charge controllers using the Restore
Default Settings function in the Setup menu. All defaults are restored except for auxiliary output settings in slave charge
controllers.
Battery Amp-Hour Rating
The amp-hour setting is used by both the Remaining Battery Capacity function and Advanced Charge Control. The setting should be the total published
25 °C 20hr rate amp-hour rating of the total battery bank. For systems with more than one battery, battery amp-hours add when batteries are placed in parallel.
When batteries are placed in series battery voltage adds and amp-hours do not.
Charge Efficiency & Charge Efficiency Mode
Charge Efficiency relates to how much charge is absorbed by the battery compared to charge delivered. With charge efficiency set to 94%, the battery is
expected to retain 94 amp-hours for each 100 amp-hours of charge delivered. Charge Efficiency Mode determines whether Charge Efficiency remains at a
fixed number or automatically updates based on actual battery behavior. The factory settings of 94% (Charge Efficiency) and AUTO ADJUST (Charge
Efficiency Mode) are typically suitable for most systems and do not require adjustment.
Systems which may benefit from a FIXED Charge Efficiency Mode are those with less than 2 amps of charge current per 100 amp-hours of battery
capacity, or where another charging source is what typically brings the battery back to full charge. For these systems a suitable Charge Efficiency value
needs to be determined experimentally. Try AUTO ADJUST first and see what charge efficiency the IPN-ProRemote computes over 5 –10 “normal”
charge/discharge cycles. You may then want to lock this value in place by setting Charge Efficiency Mode to FIXED. A perfect Charge Efficiency setting will
cause the Amp-hours From Full counter to just reach 0 (zero) when the charge controller switches to Float indicating full charge.
Self Discharge Rate
All batteries self discharge at some rate which varies greatly based on battery type and temperature. The Self Discharge Rate entered should be the
battery manufacturers 25 °C value. In systems that cycle regularly, self discharge is typically a small contributor to total discharge compared to load current
and an accurate Self Discharge Rate value is not as important. In systems where load current is low, self discharge may be a large contributor to total
discharge and an accurate Self Discharge Rate is much more important. The Self Discharge Rate will be automatically corrected for temperature if the
accompanying charge controller includes a battery temperature sensor.
TYPICAL SELF DISCHARGE RATE
BATTERY CONSTRUCTION SELF DISCHARGE RATE
Vented Liquid Electrolyte • Lead-Antimony 12%/Month
Vented Liquid Electrolyte • Lead-Calcium 5%/Month
Gel • Lead-Calcium 3%/month
AGM • Lead-Calcium 2%/month
TABLE 2