
PHOENIX-25™
By Castle Creations
25 Amp Brushless Sensorless Speed Control
PHOENIX-25™ User Guide Page 2of 7Rev 4-date 11/09/04
This document, Phoenix-25™ software, and Phoenix-25™ PCB layout are all Copyright 2002-2003 by Patrick del Castillo and Castle Creations
Warning! High power motor systems can be very dangerous! High currents can heat wires
and batteries, causing fires and burning skin. Follow the wiring directions carefully! Model
aircraft equipped with high power motors can kill. Always fly at a sanctioned field. Never fly
over or near spectators. Even though this controller is equipped with a safety arming program,
you should still use caution when connecting the main battery.
3. Connect the main power battery to the speed controller.
4. The speed controller will remain disarmed (will not operate) until it sees more than four seconds of
“brake” throttle. Move the throttle arm to the lowest position on your transmitter, wait at least
four seconds, and then test the controller to make sure that the throttle operates.
5. Go fly!
6. If the BEC cutoff occurs before you land, you may restart the motor and use low throttle if
necessary by moving the throttle stick all the way down (to the brake position) and then throttling
back up. BEC cutoff will occur again if the voltage drops too low.
4.0 Using the Features of Your Phoenix-25™
BEC -The BEC power is supplied to the receiver and servos through the receiver connector wires.
If you wish to disable the BEC and use a separate receiver battery (required for the use of more than
ten cells), you must first cut the red wire in the trio of receiver wires. Simply use a pair of wire cutters
to remove a short section of the red wire near the receiver connector, and be sure to insulate the cut
wire with a bit of electrical tape. Then you may safely use a battery with your receiver.
Brake -moving the transmitter throttle stick to the bottom position enables the prop brake.
Cutoff -The motor cutoff will occur when the input battery voltage drops below the programmed
cutoff voltage (factory preset at 5.0V) for more than one half second. Once motor cutoff has
occurred, moving the throttle to the braking position (full off) can re-arm the controller. This will
allow restart of the motor at low throttle after cutoff has occurred. WARNING: Repeated
restarting of the motor may drain the battery to a point where the radio receiver will stop
operating, resulting in a loss of control of the model.
Loss of Transmitter Signal,or excessive radio noise cutoff -Motor cutoff will also occur if the
signal from the transmitter is lost, or if the radio noise becomes excessive. After radio connection
has been reestablished, moving the throttle to the braking position (full off) for four seconds can
restart the motor.
Safe Power Up -The Safe Power up feature is a “finger saver”, designed to prevent the motor from
starting accidentally on power up. To arm the controller, the transmitter stick must be held in the
“Brake” position (all the way down) for at least four seconds. Until the controller is armed, it will not
provide any power to the motor, regardless of where the throttle stick on your transmitter is
positioned. Before flying your model, be sure to “blip” the throttle to ensure that the controller is
armed.
LED –The LED is used for programming the features on the Phoenix-25™. Once armed, the LED
also provides an indication that the controller has reached full throttle by lighting solid when full
throttle is reached. If the unit is in Auto-Calibrating Throttle mode (program setting 4-1) then you
may see full throttle LED indication before the stick is in the full up position. Simply continue
moving the stick to full up. The controller will detect the high stick travel and adjust full throttle
accordingly.
5.0Troubleshooting
Everything is hooked up correctly, the BEC (receiver and servos) works, but the throttle
does not work.
The controller is not seeing the four seconds of “dead space” (low throttle) and is not arming. Try
moving your throttle stick all the way down, and moving the trim all the way down. Wait for four
seconds and try the throttle again. If it still does not arm, you may need to reverse the throttle
control on your transmitter (see your radio documentation). You may also check to make sure that
your endpoint adjustments on your radio (if it has them) are set all the way open.
Every time I throttle all the way up, the controller “cuts off” after a few seconds, even with
fresh charged batteries.
The controller will automatically shut down the motor if the battery voltage falls below the
programmed voltage cutoff (factory preset at 5.0V) for more than half a second. This is to protect
your airplane from a loss of control caused by too low a voltage at the receiver. If the cutoff is
kicking in with fresh charged batteries, it means that the voltage is dropping very quickly. This is
usually an indication of a motor that is drawing too much current for the batteries to handle. Try
using a smaller prop on the motor, or using batteries with a higher rating (for example, if you are
using 800AR cells, you might try going to 1000SCR cells.)
The LED comes on when I throttle up.
This is normal. The LED comes on when full throttle has been reached. If the unit is in Auto-
Calibrating Throttle mode (program setting 4-1) then you may see full throttle LED indication before
the stick is in the full up position. Simply continue moving the stick to full up. The controller will
detect the high stick travel and adjust full throttle accordingly.
Nothing seems to work, receiver and servos are dead, and the throttle is dead.
Check all connections to ensure that they are correct, and that the polarity (+/-) connections are
correct. If everything is correctly connected, and the receiver and servos still do not work, contact
the dealer where you purchased your Phoenix-25™ or Contact Castle Creations directly. (See info
below)
6.0 Contact / Warranty Information
Your Phoenix-25™ is warranted for one(1) year from date of purchase to be free from manufacturing
and component defects. This warranty does not cover abuse, neglect, or damage due to incorrect
wiring, over voltage, or overloading. If you have any questions, comments, or wish to return your
Phoenix-25™ for warranty or non-warranty repair/replacement contact Castle Creations at:
Castle Creations Email: info@castlecreations.com
402 E. Pendleton Ave. Fax: (785) 883-4571
Wellsville, KS 66092 Website: http://www.castlecreations.com
Tel: (785) 883-4519
7.0 Phoenix-25™ Programming Features
Programming the Phoenix-25™
Programming the Phoenix-25™ is as simple as answering a few questions. The Phoenix-25™ asks
questions by flashing a setting number, followed by the possible setting values. There are seven
settings that can be programmed in the Phoenix-25™: 1) Cutoff voltage, 2) Current Limiting, 3)