Fosworks COBRA ESC-160 User manual

COBRA 30W
ESC-160 , ESC-161,
ESC165 and ESC166
30W High Frequency Speed Controller
WITH POWER
PROTECTOR
P.O.Box 675,
Blackburn,
Lancs. BB1 9DL
UK
WWW.FOSWORKS.CO.UK Tel [phone]
SILENT OPERATION—HIGH FREQ.
PLUG AND PLAY
3 SELECTABLE POWER CURVES
ADJUSTABLE INERTIA
COMPACT SIZE
COMPATIBLE WITH ALL BRUSHED
DC MOTOR TYPES INC.CORELESS
POWER PROTECTOR IF CONTROL
NOT CENTRED ON SWITCH ON.
MAX SPEED ADJUSTMENT
WIRED FOR SOUND CARDS (ESC
161 and ESC165)
Radio Controlled, High Frequency, Microprocessor
Controlled Motor Speed Controller
INPUT 6—28 volts (ESC 160 and ESC-165)
INPUT 3.6-12 volts (ESC-161 and ESC166
OUTPUT. 0 - 28 volts up to 14 A Peak
5V BEC provides up to 400mA available on receiver pins
Maximum continuous power 30 Watts Only 44mm x 22mm x 11mm
SETTING UP THE COBRA - note the Cobra must be connected to a receiver which is
bound to it’s transmitter. For power curve setting see overleaf.
Factory default values: Bi-directional operation, Stop position at 1.50ms, Full fwd at
1.95ms, full reverse at 1.05ms, inertia control period 1 second, power curve 2.
Technical note: standard servo protocol is provided by r/c systems based on a pulse variation from 1 to 2 millisec-
onds, with the centre position therefore being at 1.5ms. In practice, with manufacturing tolerances and with
cheaper designs, this can vary significantly, which is why the calibration facility is provided on the Cobra. In some
cases, where the signal is a long way outside the specification, the Cobra may not be able to calibrate. If this hap-
pens, please contact us for advice.
1. Turn your transmitter, then turn on your loco.
2. The red LED will flash quickly for 2.5 seconds. Press and release set-up button to
enter calibration within this period.
3. If there is no button press in this time, the Cobra will start normal operation.
4. If the button has been pressed in this time, the LED will be fully ON.
5. To alter Inertia, press and release the SET-UP button.
6. The LED will now flash rapidly, press and hold down the button for the length of time
you wish the inertia to act for - up to a maximum of 31 secs. The LED will be fully on
in this time. If you do not wish to change the Inertia, just release the button within 1
second. Once the button is released you can power down the Cobra if you do not
wish to change any other settings, or proceed to setting the STOP, FULL FWD,
FULL REV and MAX SPEED settings.
7. The LED will now flash slowly with equally spaced flashes. Put the stick or knob to
STOP (zero power) position and press and release the SET-UP button.
8. The LED will now flash slowly with unequal flashes mostly ON. Put the stick or
knob in the direction you wish to be fully FORWARD (full power) and press and re
lease the SET-UP button.
9. The LED will now flash slowly with unequal flashes mostly OFF. Put the stick or
knob fully REVERSE (full power) and press and release the SET-UP button.
10. The Cobra can now be adjusted to reduce the Maximum Speed of the model. (If this
is NOT required, turn off the power and restart as usual.) You can now drive the
model with the speed control - WARNING the model will move - set the speed to the
desired maximum and press the set-up button once more, you will notice a decrease
in the speed of the model as the range is adjusted. Now power off and restart.
NOTES:
Unidirectional forward operation - if at step 7, the stick or knob is set to the lowest posi-
tion, and at step 8 and 9 is set to the same maximum position, the Cobra will operate in the
Forward direction only, within the set speed range.
Unidirectional reverse operation - if at step 7and 8, the stick or knob is set to the lowest
position, and at step 9 is set to the maximum position, the Cobra will operate in the Re-
verse direction only, within the set speed range.
Inability to calibrate - if at steps 7 or 8 the normal sequence is not achievable it may be
that the radio is providing an inaccurate PWM signal outside the range of the Cobra.
Please call us for advice.
Iss 8

COBRA
Silent control
Connect the Cobra servo plug into your receiver the correct way around (black to nega-
tive) on the following pins:
OMNI-ESC pins, Rx102-Ch.1 pins, Spektrum-ELEV, Planet-ELEV, 27 & 40mHz-Ch.2
POWER CURVE SETTING
The Cobra has three power curves which can
easily be set by the user.
1. Standard straight line response to the regulator.
2. Slow start, and a more rapid rise at higher power up
to full power.
3. Straight line up to half power for shunting.
To set the power curve:
1. With everything switched on and settled, with the regulator in the off posi-
tion, observe the Cobra. It will be flashing in groups of one, two or three
flashes.
2. To change the setting, press and hold the set-up button until the LED stays
on constantly.
3. Now release the button and the setting will change to the next curve. The
Cobra will again flash in groups of 1, 2 or 3 flashes to indicate the new curve
selected. For example, if the Cobra was initially on curve 2 and you want to
select curve 1, then steps 2 and 3 will have to be repeated twice to get the
power curve back onto setting 1.
OPERATING THE MODEL
Power up the transmitter, THEN the model. Wait 3 seconds for the controller to settle. The
locomotive should respond smoothly to your movement of the regulator control; the further
you go, the faster it goes. Same for reverse.
POWER PROTECTOR - If you have turned on the handset with the regulator away from
the off position, the Cobra will not give you power until you have returned the regulator to
off, then there is a one second delay.
If you find that the control is too abrupt or too sluggish, then you can adjust the power
curve on the Cobra as shown above.
The Cobra Electronic speed controller is part of the Fosworks Plug ’n’ Play Radio Con-
trol System. Red JST plugs (BEC Plugs) are employed to create a super simple way to
Radio Control your loco. The smaller Male plug gives power to the larger Female plug at
each stage. No soldering is required.
Above is the full circuit diagram for a sound card connected to a Cobra. Also
shown are two, Two Way Switcher units which activate the auxiliary sound
effects on a sound card, and other items which make up the complete system
for fitting into a loco.
Below is the circuit diagram for the OMNI system that does not require two
way switcher units.
Everything shown is available from FOSWORKS. If you buy a complete sys-
tem from us it will be assembled and tested ready for you to install in your lo-
co.
Cobra with a standard Receiver and Two way switcher units to
activate sound effects on the sound card
Cobra with an OMNI Rx-2 Receiver. Note direct connection from
the RX to the sound card to activate sound effects
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2
3