Curtis Instruments AC F4-A User Manual

4 — PROGRAMMABLE PARAMETERS
pg. 65
Return to TOC Curtis AC F4-A Motor Controller – August 2020
APPLICATION SETUP — MAIN CONTACTOR MENU
PARAMETER ALLOWABLE RANGE DEFAULT DESCRIPTION
Main Enable
Main_Enable
0x34C5 0x00
On/Off
On/Off
On When programmed On the controller's native software
controls the main contactor when enabling the interlock. When
programmed Off, VCL controls the main contactor.
See the assignment parameter in Programmer/Controller Setup/
IO Assignments/Coil Drivers/Main Contactor Driver. The default is
Driver 3.
Note: With Main Enable programmed Off the controller will
not be able to open the main contactor in serious fault
conditions and the system will therefore not meet EEC safety
requirements.
Main State
Main_State
0x34C9 0x00
0 – 10
0 – 10
Read Only Main contactor state:
0 = open
1 = precharge
2 = weld check
3 = closing delay
4 = missing check
5 = closed (when Main Enable = On)
6 = delay
7 = arc check
8 = open delay
9 = fault
10 = closed (when Main Enable = Off)
Keyswitch Voltage
Keyswitch_Voltage
0x3398 0x00
0.00 – 105.00 V
0 – 10500
Read Only
0.01 V steps
Voltage at KSI (pin 1).
Capacitor Voltage
Capacitor_Volts
CAN = 0x34C1 0x00
0.00 – 200.00 V
0 – 20000
Read Only
0.01 V steps
Voltage of controller’s internal capacitor bank at B+ terminal.
Note that the precharge, main weld check and DNC tests affect
this reading when those actions are active.
Pull In Voltage
Main_Pull_In_Voltage
0x34C8 0x00
0 – 100 %
0 – 32767
0 % The main contactor pull-in-voltage parameter allows a high initial
voltage when the main contactor driver rst turns on to ensure
contactor closure. After 1 second, this peak voltage drops to the
contactor holding voltage. Typical is 100% to ensure closure.
Note: The Battery Voltage Compensated parameter (0x34C4)
controls whether the pull-in and holding voltages are battery
voltage compensated.
Holding Voltage
Main_Holding_Voltage
0x34C6 0x00
0 – 100 %
0 – 32767
0 % The main contactor holding-voltage parameter allows a
reduced average voltage to be applied to the contactor coil
once it has closed. Typical is 75-80% to conserve energy and
coil heating.
Set this parameter (applied voltage) high enough to hold
the contactor closed during all vehicle shock and vibrations
conditions. If the voltage is too low, the contactor tips may open
when subjected to shock and vibration conditions.
Note: The Battery Voltage Compensated parameter (0x34C4)
controls whether the pull-in and holding voltages are battery
voltage compensated.
Battery Voltage Compensated
Main_Driver_Battery_Voltage_
Compensated
0x34C4 0x00
On/Off
On/Off
On This parameter determines whether the main pull-in and holding
voltages are battery voltage compensated. When set On the pull-
in and holding voltages are set relative to the set Nominal Voltage.
In other words the output voltage is adjusted to compensate for
swings in battery voltage so the percentage is relative to the set
Nominal Voltage not to the actual voltage.
For example suppose Nominal Voltage is set to 48 V and Holding
Voltage is set to 75 % (36 V) to the output driver. Now suppose
the bus voltage dips to 40 V. If Battery Voltage Compensated = On
the output will still be 36 V (Nominal Voltage × Holding Voltage) to
the coil. If Battery Volt ge Compensated = Off the output will be
30 V (Actual Voltage × Holding Voltage) to the coil.

Curtis Instruments AC F4-A Specifications

General

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