Curtis Instruments AC F4-A User Manual

4 — PROGRAMMABLE PARAMETERS
pg. 63
Return to TOC Curtis AC F4-A Motor Controller – August 2020
APPLICATION SETUP — BATTERY SETUP MENU
PARAMETER ALLOWABLE RANGE DEFAULT DESCRIPTION
Keyswitch Voltage
Keyswitch_Voltage
0x3398 0x00
0.00 – 105.00 V
0 – 10500
Read Only Voltage at KSI (pin 1)
Nominal Voltage
Nominal_Volts
0x33AA 0x00
24.0 – 60.0 V
2400 – 6000
24 Volt* This parameter is limited to the controller’s model voltage. It must
be set to the vehicle's nominal battery pack voltage. Also, use
this parameter in determining the overvoltage and undervoltage
protection thresholds. See the dened nominal voltage in Table E-1
in Appendix E, and the Voltage Limits.
BDI
BDI_Percentage
0x33A5 0x00
0 – 100 %
0 – 100
% (0-100) Battery Discharge Indicator (BDI). This is the battery State of
Charge (SOC) as a percentage. The percentage is based upon
lead-acid battery chemistry and the associated parameters in the
BDI Setup menu (below).
Battery Current
Battery_Current_Display
0x338F 0x00
–3276.8 – 3276.7
–32768 – 32767
Read Only
0.1 A steps
Calculated value in DC Amps.
Battery Power
Battery_Power
0x3390 0x00
–3276.8 – 3276.7
–327678 – 32767
Read Only
0.1 kW steps
Calculated value in Watts (W = V x I).
APPLICATION SETUP/BATTERY SETUP — UNDERVOLTAGE CONTROLLER MENU
PARAMETER ALLOWABLE RANGE DEFAULT DESCRIPTION
User Undervoltage
User_Undervoltage
0x33A1 0x00
0 – 95 %
0 – 242
70 % The value of this parameter is a percentage of the Nominal
Voltage setting. Utilize the User Undervoltage parameter to
adjust the undervoltage threshold, which is the voltage when the
controller begins cutting back drive current to prevent damage to
the electrical system or an untimely shutdown.
Typically, this parameter is applicable in an application at the
high end of the controller's voltage range, such as a 24-36V
controller in a system with a 36V battery pack. In this case, the
undervoltage threshold adjustment enables a usable battery
voltage by setting the User Undervoltage to an appropriate value,
versus that of the controller’s 24V undervoltage specication.
Note that the undervoltage threshold can never be a lower
value than the controller's power base minimum voltage rating.
See the Voltage Limits section in Chapter 3, and the controller
specications in Appendix E.
Kp UV
Batt_Kp_UV
0x338B 0x00
0.0 – 100.0 %
0 – 1024
2.0 % When the battery voltage goes below the undervoltage threshold,
a closed loop PI (Proportional/Integral) algorithm attempts to keep
the battery voltage from drooping. It accomplishes this by cutting
back the drive current thereby reducing the load on the battery.
The Kp term is the proportional gain and is set in units of percent
cutback per volt; for example, a setting of 25 would provide full
current cutback with 4 V of droop.
The Ki term is the integral gain. Integral gain will accumulate the
voltage droop and attempt to bring the battery droop back to 0 V.
Higher gains will react more strongly and quickly.
Ki UV
Batt_Ki_UV
0x3389 0x00
0 – 100 %
0 – 16384
50 %
Quick Links:
Voltage limits p.26
BDI info p.28
BDI menu p.64
Table E-1 p.205
Appendix E p.205
*The default is controller model based.

Curtis Instruments AC F4-A Specifications

General

Brand	Curtis Instruments
Model	AC F4-A
Category	Controller
Language	English