Curtis 1232E Manual page 69

ALLOWABLE
PARAMETER RANGE
105 – 200 %
User Overvoltage
User_Overvoltage 269 – 512
0x3049 0x00
0 – 95 %
User Undervoltage
User_Undervoltage 0 – 242
0x304A 0x00
Curtis 1232E/34E/36E/38E & 1232SE/34SE/36SE Manual,
2 4 N O V E M B E R 2 0 1 5
BATTERY MENU, cont'd
The value of this parameter is a percentage of the Nominal Voltage setting.
The User Overvoltage parameter can be used to adjust the overvoltage threshold,
which is the voltage at which the controller will cut back regen braking to prevent
damage to the electrical system.
Typically this parameter is changed only when the controller is being used in
an application at the low end of the controller's range: such as
a 48–80V controller being used in a system with a 48V battery pack. In this case,
the overvoltage threshold can be raised by setting the User Overvoltage to a
higher value. The overvoltage threshold can never be raised above the controller's
power base maximum voltage rating.
The value of this parameter is a percentage of the Nominal Voltage setting.
The User Undervoltage parameter can be used to adjust the undervoltage threshold,
which is the voltage at which the controller will cut back drive current to prevent
damage to the electrical system.
Typically this parameter is changed only when the controller is being used in
an application at the high end of the controller's range: such as a 24–36V controller
being used in a system with a 36V battery pack. In this case, the undervoltage
threshold can be lowered by setting the User Undervoltage to a lower value. The
undervoltage threshold can never be lowered below the controller's power base
minimum voltage rating.
BDI Algorithm
The BDI (battery discharge indicator) algorithm continuously calculates
the battery state-of-charge whenever KSI is on. The result of the BDI algo-
rithm is the variable BDI Percentage, which is viewable in the programmer's
Monitor » Battery menu. When KSI is turned off, the present BDI Percentage
is stored in nonvolatile memory.
The standard values for volts per cell are as follows, for flooded lead
acid and sealed maintenance-free batteries.
Reset Volts Per Cell
Full Volts Per Cell
Empty Volts Per Cell
Use the standard values for your type of batteries as the starting point in
setting the reset, full, and empty volts-per-cell parameters.
30
os
3 — PROGRAMMABLE PARAMETERS:
DESCRIPTION
battery type
flooded sealed
2.09 2.09
2.04 2.04
1.73 1.90
Battery Parameters
65