Curtis 1243GEN2 Manual
49
3 — PROGRAMMABLE PARAMETERS:
BDI
The battery discharge indicator constantly calculates the battery state-of-charge
whenever KSI is on. When KSI is turned off, the present battery state-of-charge is
stored in non-volatile memory. BDI information is viewable via the Spyglass display
and via the 1311 programmer’s Monitor Menu as BDI%. Three parameters are used
to adjust the display.
The standard values for flooded lead acid and sealed maintenance-free batteries
are listed below.
BATTERY TYPE
FLOODED SEALED
Full volts (VPC) 2.04 2.04
Empty volts (VPC) 1.74 1.91
Reset volts (VPC) 2.10 2.10
Custom values can be entered based on specific batteries in consultation with a Curtis
applications engineer.
Note: BDI values are set without the decimal point; 2.04 volts per cell, for
example, will appear as 204 (i.e., VPC × 100) on the programmer. The Full,
Empty, and Reset voltages are set in VPC units. For whole-battery voltages (rather
than VPC values), see Table 5.
FULL VOLTS
The full voltage parameter sets the battery voltage that will be considered 100%
state-of-charge. When a loaded battery drops below this voltage, it begins to lose
charge. The full voltage value can be set from the programmed Empty Volts
value up to the programmed Reset Volts value, in 0.01 VPC increments.
After adjusting Full Volts, KSI must be cycled for the new setting to take
effect.
EMPTY VOLTS
The empty voltage parameter sets the battery voltage that will be considered 0%
state-of-charge. When the battery remains under this voltage consistently, the
BDI will read 0% state of charge. The empty voltage value can be set from 1.50
up to the programmed Full Volts value, in 0.01 VPC increments.
After adjusting Empty Volts, KSI must be cycled for the new setting to
take effect.
RESET VOLTS
The reset voltage parameter sets the battery voltage used to detect the 100%
state-of-charge point on a battery with no load. Whenever the programmed
Reset Voltage is present for 2 seconds (except during regenerative braking), the
Battery Discharge Indicator (BDI) Parameters
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