Nosram Tomahawk Reverse User Manual page 2

U S E R G U I D E U S E R G U I D E
U S E R G U I D E U S E R G U I D E U S E R G U I D E
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WARNING NOTES WARNING NOTES WARNING NOTES WARNING NOTES WARNING NOTES
• Important: never leave your RC model unattended when the
battery is connected. If a fault should occur the result could be a
fire in the model which could destroy anything else in the vicinity.
• The speed control and other electronic components must never be
allowed to contact water. Avoid operating the unit in rain. If you
are obliged to run in wet conditions, domestic paper towels
provide the best protection.
• If the motor is connected to the speed control you must not run
the motor by connecting a separate battery. This will wreck the
unit and invalidate the warranty.
• Do not cut off the original plugs as this invalidates the warranty.
• Take care to avoid incorrect connections and reverse polarity as
this will also cause damage to the unit.
INSTALLATION TIPS INSTALLATION TIPS INSTALLATION TIPS INSTALLATION TIPS INSTALLATION TIPS
• Mount the speed control in the model using the double-sided foam tape supplied.
• Provide plenty of cooling openings in the bodywork; this increases the performance and extends the
life of all electronic components.
• Install the speed control in a location where it is protected from crash damage.
• The speed control should be installed in such a way that you have easy access to all connectors
and the set-up button.
• Ensure that there is an adequate distance (approx. 3 cm) between the speed control and power
cables and the receiver or receiver aerial. Avoid direct contact between all power system
components and the receiver or aerial, as this can cause interference. If you encounter interference
problems, reposition the components in the model.
• The aerial should be run vertically up and away from the receiver. Avoid contact with any parts
made of carbon fibre or metal. If the aerial is too long, don't coil up the excess length. It is better
to cut it down to a length of about 35 cm. See also the instructions supplied with your radio
control system.
• IMPORTANT: the heat-sink supplied in the set improves the performance
of your Tomahawk Reverse speed control and must always be used. Use
only genuine Nosram heatsinks. Never allow the heatsink or FETs of one
"block" (field in the cross) to touch parts of another "block" - short
circuit.
INSTALLATION INSTALLATION
INSTALLATION INSTALLATION INSTALLATION
• First attach the heat-sink (supplied) to the speed control, as described under "Installation tips".
• Solder the suppressor capacitors to the motor.
• Remove the motor pinion, or ensure in some other way that the wheels of the model can rotate freely.
• Install the speed control in the model.
• Connect the speed control to the receiver (channel 2).
• Connect the speed control to the motor. Note the colour code: yellow wire positive, blue wire negative.
• Check all the wiring and connections before you connect the speed control to a drive battery.
Caution: incorrect polarity will wreck your speed control.
• The speed control is now ready to be set-up (see next page).
Dear customer,
congratulations on choosing one of the world's best speed controls.
We have incorporated the latest digital technology in your Tomahawk Reverse speed control in order to
provide maximum performance and reliability. The following features (described in detail later) give your
Tomahawk Reverse the crucial advantage:
• Full proportional forward, brake and reverse for perfect car control.
• Digital high-frequency for 20% longer runtime than mechanical speed-controls.
• Instant fun due to standard connectors and single button set-up.
• Bullet proof due to microchip operated protection system.
SPECIFICATION SPECIFICATION SPECIFICATION
SPECIFICATION SPECIFICATION
Voltage Input
Typical voltage drop @20A*
Rated current*
Rec. Motorlimit
Drive Frequency
B.E.C.
Protection system
Footprint
Weight incl. Wires
Connectors
(*) Transistors rating at 25°C junction temperature. Specifications subject to change without notice.
• Never allow the output stages (FETs) to touch a metal surface -
short-circuit hazard.
• Never wrap your speed control in foil or film; air must always be
able to flow round and over the unit.
• All cables and connections should be well insulated.
Short-circuits will ruin the unit.
• Never change the polarity of the receiver plug.
• Never solder a Schottky diode to the motor when you are using an
Nosram Tomahawk Reverse speed control.
Schottky diodes ruin any forward/reverse speed control.
• If you use more than 6 cells in the drive battery, the motor limit
rises by 2 turns for each additional cell.
CONNECTIONS CONNECTIONS CONNECTIONS CONNECTIONS CONNECTIONS
• JR/Graupner, Ko-Propo, Futaba and Hitec:
The Nosram speed control is fitted with an Nosram Multi Connector receiver lead which fits any of
the above receivers directly.
• Sanwa / Airtronics receivers:
Remove the black plastic moulding from the receiver cable and replace it with the plastic moulding
supplied (inscribed "AIR") as follows:
• Replacing the plastic plug moulding:
Heatsink Press in the metal lugs of the connector pins using a ball-point pen to disengage them; the wires
can then be withdrawn from the plastic housing. Check the polarity using the table below, and slip
the pins into the new plastic moulding until they snap into place.
Check correct polarity carefully if changing connectors:
Receiver Futaba
Signal wire white
Positive wire red
Negative wire black
MOTOR SUPPRESSION:
Your speed control can be ruined if you connect it to a motor with no suppressors or inadequate
suppression. It is therefore essential to solder the capacitors supplied in the set to your motor
(see drawing).
CAUTION: never use Schottky diodes in conjunction with a
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forward/reverse controller such as the Tomahawk Reverse.
4-7 cells (4.8 - 8.4 V)
0.250 V
80 A
Over 16 turns
1.1 kHz
5.0 V
3-way
40 x 40 mm
47 g
Standard Tamiya style
Black-negative (-B) battery
Red-positive (+B) battery
Blue-negative (-M) motor
Yellow-positive (+M) motor
3-colour ribbon cable - receiver lead
Bend the metal lugs up again.
Push the plug into the new plastic moulding.
JR / Graupner Acoms Sanwa / Airtronics
orange yellow yellow
red red red
brown black black
Kondensator
Kondensator
Kondensator
Plus
Minus
Kondensator
Schottky diode: