Curtis Instruments AC F4-A User Manual

6 — COMMISSIONING
pg. 135
Return to TOC Curtis AC F4-A Motor Controller – August 2020
d) e direction source is set using the Direction Source parameter. See Programmer » Application
Setup » rottle » Direction Source. Here, the source will be the Fwd/Rev selection if the switches
are selected as noted in step a. Alternatively, if voltage determines the direction, select Wig/Wag
(wigwag throttle).
e) If the throttle will be via VCL, enable VCL rottle. Programmer » Application Setup » rottle
» VCL rottle Enable.
e VCL rottle provides a dierent way of sending the throttle command to the controller.
is throttle type uses VCL to dene the throttle signal that will be “input” into the throttle signal
chain as VCL_rottle.
See Programmer » Controller Setup » IO Assignments » Controls » rottle Source = 0
e VCL program/coding will determine the source of the throttle signal, making this a very
exible throttle input method. VCL can be written to use any of the controller’s analog inputs
or CAN communication messages (e.g., from a vehicle manager controller) as the source of the
throttle signal.
Setting the throttle to the parameter VCL rottle Enable (On) re-assigns (frees) the throttle
pot input (Pin 16) for uses other than throttle input.
For questions regarding this throttle type, contact the Curtis distributor or support engineer.
3-wire potentiometer throttle
When a 3-wire potentiometer is used, the controller provides full fault protection in accordance with
EN 1175-1 requirements. In its voltage divider mode, the controller provides the voltage source and
the potentiometer return/ground. Pin 15, the Pot Supply circuit, provides a current limited 5 volts
to the 3-wire potentiometer, and pin 7, I/O Ground, provides the return path. is is the 3-wire
potentiometer throttle shown in the basic wiring diagram (Figure 6, Chapter 2) and Figure 25, below.
If any of the three connections open, it triggers a rottle Input fault (ash code 4-2).
e Curtis throttle FP-10 model is a 0–5 kΩ 3-wire potentiometer throttle. It oers, besides the
controller’s 3-wire fault detection, two throttle spring (position) detection switches, two neutral and
two full throttle position switches. is throttle is congurable as a 0–5k Ω or 5k–0 Ω potentiometer.
1kΩ –10kΩ
FASTER
I/O Ground (Pin 7)
Pot 6 Supply (Pin 15)
Pot 1 Wiper input (Pin 16)
3-wire Potentiometer Source
Figure 25
Wiring for 3-Wire
Potentiometer throttles
2-wire potentiometer throttle
For 2-wire resistive potentiometers, shown in Figure 26, full throttle request corresponds to 0 Ω
measured between the pot wiper (pin 16) and the I/O Ground (pin 7). A 2-wire throttle requires
the Forward & Reverse Min Input parameters be set towards a higher percentage (e.g., 95%) and
the Forward & Reverse Max Input parameters set to a lower percentage (e.g., 5%). Note that this is

Curtis Instruments AC F4-A Specifications

General

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