FUTABA MC330R Instruction Manual

1M23N08204
Before using your MC330CR, please read this
manual thoroughly and use the MC330CR properly
and safely. After reading this manual, store it in a
safe place.
•No part of this manual may be reproduced in any form without prior
permission.
INSTRUCTION •The contents of this manual are subject to change without prior
notice.
MANUAL •This manual has been carefully written. Please write to Futaba if
you feel that any corrections or clarifications should be made.
Thank you for buying an MC330CR. The MC330CR is a high-frequency drive FET amp with reverse
function developed for model electric cars. It is compact and light weight, and uses a simple digital
setting system.

FEATURES

Applicable motors
•High-frequency drive system (Number of turns is criteria.)
•Forward, reverse, and brake operations are all Use the MC330CR with a motor with 13T or
more turns.
linear
•Reverse operation cancellation function *If a motor with a number of turns smaller than the above
is used, the heat protector and overcurrent protection
•One-touch input of neutral, high, and brake
circuit may operate. The number of turns of the motor is a
MAX points by pushbutton switch
criteria only. Depending on the running conditions, the
•Overcurrent protection function protection circuit may operate even if the condition above
is satisfied.
•Heat protector
Power supply
•Low-voltage protection function
•Power left on alarm function
Nicd battery 6~7 cells (7.2~8.4V)
•Abnormal input signal cancellation function
•Checker function (LED display, audible beep)

CONNECTION

(Orange)
Motor connector
Connects to the motor.
(Blue)
(Orange) is plus. (Blue) is minus.
Checker LED
If the motor rotates in the wrong
direction, interchange the connections of
Pushbutton this connector.
switch
(Black)
Nicd battery connector
Connects to the running Nicd battery.
(Red) is plus. (Black) is minus.
(Red)
Miniature screwdriver
Accessory. Use to press the
pushbutton switch.
MC330CR
Receiver connector
Connects to the receiver throttle channel.
Power switch
[MC330CR Technical Data]
(Specifications are subject to change without prior notice.)
•Operating system: Forward, reverse, and brake •Case size: 27.1x333x12.8mm (excluding protruding parts)
operations are all linear. •Silicon cord gauge size: AWG14 equivalent
•Power requirement: Nicd battery 6~7 cells (7.2~8.4V) •Weight: 45g (including connectors and switches)
•PWM frequency: 1.5kHz (fixed) •BEC voltage: 6.0V
•Setting: One-touch input by pushbutton switch. Set data
is saved to built-in EEPROM.
•Current capacity (FET rating): Forward=200A,
reverse=100A

SET UP

Neutral, high, and brake MAX points setting
Set the steering angle adjustment function (ATV) *When using the ABS function,
to 100% and the ABS function and acceleration after setting up the MC330CR, stop
the reverse function, then turn on
function to OFF using the transmitter throttle
the ABS function. If the ABS
channel function.
function is on, the MC330CR
If the steering angle is too large or the ABS and cannot be set up correctly.
acceleration functions are on, erroneous operation may
occur.
Before setting each point, set the transmitter throttle channel trim to neutral.
1
Turn on the power in transmitter -> amp order.
MC330CR
Transmitter throttle operation
(Pushbutton switch operation) (Checker LED)
2
Neutral
point setting •Continuous single blink
•Press the pushbutton switch.
•Neutral state
(0.5 secs or longer)
N
(Confirmation beep sounds)
3
High point
•Continuous double blink
setting
•Press the pushbutton switch.
•Full high state
(Confirmation beep sounds)
N
Full High
4
Brake MAX
•If the LED goes out,
point setting
•Full brake state
•Press the pushbutton switch. setting is complete.
(Confirmation beep sounds.)
N Full brake
* Since the data is read at the end of setting of all points, the points
If the LED does not go off but blinks rapidly, setting
cannot be set independently.
was not performed normally. Repeat setting from
* If the amp power was turned off during setting, the setting points
"Neutral point setting".
cannot be memorized. (The previous settings are retained.)
* The confirmation beep sounds only when the motor was
connected.
Cancelling the reverse function •Continuous rapid blink
The amp reverse function can be cancelled by the following method so that the model can be
used even in races that prohibit reverse running. (Brake operation only)
MC330CR
(Pushbutton switch operation) (Power switch)
1
* When desired, you can enable
Reverse the cancelled reverse function by
function repeating the operation shown at
While pressing ON
the left. (The reverse function is
cancellation
the pushbutton switch,
set the power switch to ON.
switched alternately.)
BRAKE/REVERSE OPERATING INSTRUCTIONS
Operation can be switched to reverse operation by returning the throttle trigger (or throttle
stick) from the brake position to the neutral position.
FUTABA CORPORATION Makuhari Techno Garden Bldg., B6F 1-3 Nakase, Mihama-ku, Chiba 261-8555, Japan

MOUNTING PRECAUTIONS

Install the receiver and receiver antenna at
Insert the connectors firmly.
least 1cm away from the amp, motor cord,
If vibrations while running cause the connectors to
power cord, Nicd battery, and other parts that
work loose, control may be lost and an extremely
carry a high current.
dangerous situation may occur.
Metal and carbon chassis and other
conductive parts transfer switching noise.
When mounting the receiver to such a
chassis, use thick double-sided tape to
mount the receiver as far away from the
Never reverse the Nicd battery polarity.
chassis as possible.
Reverse connection will immediately destroy the
Always install a motor noise killer capacitor.
amp.
Also, do not forget to service the brushes,
and other parts.
Mount the MC330CR so that conductive
If noise causes the receiver to operate erroneously,
parts do not directly touch the metal fins of
control may be lost and an extremely dangerous
the FET.
situation may occur.
A short circuit may occur.
OPERATING PRECAUTIONS
Do not run the vehicle in the rain or through If a peddle or other foreign object gets
puddles or on muddy or snowy roads. caught in the gears or the vehicle hits an
obstruction, do not try to forcefully run
If moisture enters the amp, erroneous operation
vehicle.
may cause loss of control and an extremely
dangerous situation may occur. It may also cause
Forcefully running the vehicle will cause trouble.
amp trouble. Should moisture enter and cause
erroneous operation, send the MC330CR out for
repair and inspection.
Do not touch the motor or amp immediately
after running.
Always turn the power switches on and off in
Touching the motor or amp immediately after
the following order:
running may result in serious burns.
ON: Transmitter -> receiver (amp switch)
OFF: Receiver (amp switch) -> transmitter
When making adjustments, remove the
If the power switches are operated in the opposite
order, the vehicle may run unexpectedly and an motor, or place the model on a stand, so
extremely dangerous situation may occur. that it cannot run.
When going to and returning from the circuit,
and when storing the model, always remove
the Nicd battery.
If the switch is turned on erroneously, control may
be lost or a fire may start.
Special Markings
Mark Meaning
Pay special attention to the safety
Procedures which may lead to a dangerous
at the parts of this manual that are
condition and cause death or serious injury to the
indicated by the following marks.
user if not carried out properly.
Procedures which may lead to a dangerous
condition or cause death or serious injury to the user
if not carried out properly, or procedures where the
Symbol: probability of superficial injury or physical damage is
; Prohibited
high.
; Mandatory
Procedures where the possibility of serious injury to
the user is small, but there is a danger of injury, or
physical damage, if not carried out properly.

PROTECTION CIRCUIT OPERATION

The following protection circuits are built into the MC330CR. When a protection circuit operates, remove the
cause before operating the model again.
When an overcurrent flows due to an output short circuit, etc., the overcurrent protection circuit automatically
Overcurrent
limits the current to protects the FET.
protection
Remove the cause of the short circuit, etc. before operating the model again.
When abnormal heating of the FET due to an overload, etc. is detected, the heat protector operates so that
the speed is gradually reduced.
Heat protector
When the FET temperature drops, the heat protector automatically resets. However, remove the cause
of the overheating before operating the model again.
When the Nicd battery voltage drops, this function limits the motor output current and ensures steering operation.
Low voltage
operation
After the speed drops, immediately recover the vehicle.
CHECKER LED DISPLAY
Relationship between amp operation and checker LED display
The amp operates linearly in proportion to the amount of forward, reverse, and brake operation. The amp operating
state can be checked with the checker LED as shown below.
Operation Checker LED display
(Reverse operation set)
Single blink
Amp power ON (Single confirmation beep)
(Only brake operation set)
Double blink
(Two confirmation beeps)
High point
Off
*Becomes brighter nearer the high
point.
Forward
On
Neutral point
Off
Reverse
On
*Becomes brighter nearer the
/brake
brake MAX point.
Brake MAX point
Off
Blinks. (Confirmation
(Amp power left on alarm) beep also sounds.)
When the transmitter power
*Not used with PCM receivers.
was turned off first.
*When the transmitter if OFF, this function is
not performed in environments such that the
servo operates erroneously.
* Confirmation beep only sounds when the motor was connected.
Phone: (043) 296-5118 Facsimile: (043) 296-5124
©FUTABA CORPORATION 2000, 7