Adjusting The Electronic Speed Control - Traxxas Rustler 3707 VXL Owner's Manual

VXL-3s Specifications
Input voltage:
4.8-11.1V (4 to 9 cells NiMH
or 2S to 3S LiPo)
Supported Motors:
Brushed
Brushless
Sensorless brushless
Motor limit:
None
Continuous current:
200A
Peak current :
320A
BEC voltage:
6.0V DC
Transistor type:
MOSFET
Battery connector:
Traxxas High-Current
Connector
Motor connectors:
TRX 3.5mm bullet
connectors
Motor/Battery Wiring:
12-gauge Maxx ® Cable
Thermal Protection:
2-stage thermal shutdown
See page 27 for advanced
VXL-3s features and setup.
20 • TR A X X AS

ADJUSTING THE ELECTRONIC SPEED CONTROL

VXL-3s BATTERY SETTINGS
(Low-Voltage Detection Setting)
The Velineon VXL-3s electronic speed control is equipped with built-in
Low-Voltage Detection. The Low-Voltage Detection circuitry constantly
monitors the battery voltage. When the battery voltage begins to reach
the minimum recommended discharge voltage threshold for LiPo
battery packs, the VXL-3s will limit the power output to 50% throttle.
When the battery voltage attempts to fall below the minimum threshold,
the VXL-3s will shut down all motor output. The LED on the speed
control will slowly blink red, indicating a low voltage shutdown. The VXL-
3s will stay in this mode until a fully charged battery is connected.
The VXL-3s speed control's Low Voltage Detection has been set for best
performance with the included battery. If your model included a NiMH
battery, the speed control's LED will glow RED, indicating Low Voltage
Detection is disabled. If your model included a LiPo battery, the speed
control's LED will glow GREEN, indicating Low Voltage Detection is activated.
Never use LiPo batteries while Low-Voltage Detection is disabled.
To verify the Low-Voltage Detection setting:
1. Turn on the transmitter (with the throttle at neutral).
2. Connect a fully charged battery pack to the VXL-3s.
3. Press and release the EZ-Set button to turn the VXL-3s on. If the LED is
solid red, then the Low-Voltage Detection is DISABLED (not safe to use
LiPo batteries). If the LED is solid green, then Low-Voltage Detection is
ACTIVATED.
To activate Low-Voltage Detection (LiPo setting):
1. Make sure the LED on the VXL-3s is on and red.
2. Press and hold the EZ-Set button for ten seconds. The
LED will turn off and then light green. Also, a "rising"
musical tone will be emitted from the motor.
3. Low-Voltage Detection is now ACTIVATED.
To disable Low-Voltage Detection (NiMH setting):
1. Make sure the LED on the VXL-3s is on and green.
2. Press and hold the EZ-Set button for ten seconds. The
LED will turn off and then light red. Also, a "falling"
musical tone will be emitted from the motor.
3. Low-Voltage Detection is now DISABLED.
VXL-3s TRANSMITTER ADJUSTMENTS
Before attempting to program your VXL-3s ESC, it is important to make sure
that your transmitter is properly adjusted (set back to the factory defaults).
Otherwise, you may not get the best performance from your speed control.
The transmitter should be adjusted as follows:
If the transmitter setting have been adjusted, reset them to the factory defaults.
1. Turn transmitter off.
2. Hold both MENU and SET.
3. Turn transmitter on.
4. Release MENU and SET. The transmitter LED will blink red.
5. Press MENU once. The transmitter LED will blink red twice repeatedly.
6. Press SET to clear settings. The LED will turn solid green and the
transmitter is restored to default.
VXL-3s SETUP PROGRAMMING
(Calibrating your ESC and transmitter)
Read through all of the programming steps before you begin. If you get
lost during programming or receive unexpected results, simply unplug
the battery, wait a few seconds, plug the battery back in, and start over.
1. Connect a fully charged battery pack to the VXL-3s.
2. Turn on the transmitter (with the throttle at neutral).
3. Press and hold the EZ-Set button (A). The LED will
first turn green and then red. Release the
EZ-Set button.
4. When the LED blinks RED ONCE, pull the
throttle trigger to the full throttle position
and hold it there (B).
5. When the LED blinks RED TWICE, push the
throttle trigger to the full reverse and hold it
there (C).
6. When the LED blinks GREEN ONCE,
programming is complete. The LED will
then shine green or red (depending on Low-Voltage
Detection setting) indicating the VXL-3s is on and at
neutral (D).
VXL-3s OPERATION
To operate the speed control and test programming, place the vehicle
on a stable block or stand so that all of the driven wheels are off the
ground. Disconnect motor wires "A" and "C" (see page 13), this will
assure the motor does not drive the wheels during testing. Do not test
programming without disconnecting the motor wires.
1. With the transmitter on, press and release the EZ-Set button. The LED will
shine red or green (depending on Low-Voltage Detection setting). This
turns the VXL-3s on.
2. Apply forward throttle. The LED will turn off until full throttle power is
reached. At full throttle, the LED will illuminate.
3. Move the trigger forward to apply the brakes. Note that braking control is
fully proportional. The LED will turn off until full braking power is reached.
At full brakes, the LED will illuminate.
4. Return the throttle trigger to neutral. The LED will shine red or green (de-
pending on Low-Voltage Detection setting).
5. Move the throttle trigger forward again to engage reverse (Profile #1). The
LED will turn off. Once full reverse power is reached, the LED will illuminate.
A
Green then Red
B
Once Red
C
Twice Red
D
Once Green