Futaba MC330CR owner's manual

1M23N08218

MC330CR

FET Speed Controller

Neutral/High/Brake

INSTRUCTION MANUAL

Futaba

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.
The contents of this manual are subject to change without prior notice.
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

High-frequency drive system
Forward, reverse, and brake operations are all linear
Reverse operation cancellation function
One-touch input of neutral, high, and brake MAX points by pushbutton switch
Overcurrent protection function
Heat protector
Low-voltage protection function
Power left on alarm function
Abnormal input signal cancellation function
Checker function (LED display, audible beep)

Applicable motors (Number of turns is criteria.)

Use the MC330CR with a motor with 13T or more turns.

*If a motor with a number of turns smaller than the above is used, the heat protector and overcurrent protection circuit may operate. The number of turns of the motor is a criteria only. Depending on the running conditions, the protection circuit may operate even if the condition above is satisfied.

Power supply

Nicd /NiMH battery 6~~7 cells (7.2~~8.4V)

CONNECTION

Figure from the manual

Motor connector

Connects to the motor. (Orange) is plus. (Blue) is minus. If the motor rotates in the wrong direction, interchange the connections of this connector.

Nicd/NiMH battery connector

Connects to the running Nicd battery. (Red) is plus. (Black) is minus.

Miniature screwdriver

Accessory. Use to press the pushbutton switch.

Receiver connector

Connects to the receiver throttle channel.

[MC330CR Technical Data] (Specifications are subject to change without prior notice.)

Operating system: Forward, reverse, and brake operations are all linear.
Power requirement: Nicd/NiMH battery 6~~7 cells (7.2~~8.4V)
PWM frequency: 1.5kHz (fixed)
Setting: One-touch input by pushbutton switch. Set data is saved to built-in EEPROM.
Current capacity (FET rating): Forward=200A, reverse=100A
Case size: 27.1x33.3x12.8mm (excluding protruding parts)
Silicon cord gauge size: AWG14 equivalent
Weight: 45g (including connectors and switches)
BEC voltage: 6.0V

MOUNTING PRECAUTIONS

WARNING

Install the receiver and receiver antenna at least 1cm away from the amp, motor cord, power cord, Nicd/NiMH battery, and other parts that carry a high current.
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 chassis as possible.
Always install a motor noise killer capacitor. Also, do not forget to service the brushes, and other parts.

If noise causes the receiver to operate erroneously, control may be lost and an extremely dangerous situation may occur.

CAUTION

Never reverse the Nicd/NiMH battery polarity. Reverse connection will immediately destroy the amp.
Mount the MC330CR so that conductive parts do not directly touch the metal fins of the FET. A short circuit may occur.

Insert the connectors firmly.

If vibrations while running cause the connectors to work loose, control may be lost and an extremely dangerous situation may occur.

OPERATING PRECAUTIONS

WARNING

Do not run the vehicle in the rain or through puddles or on muddy or snowy roads. If moisture enters the amp, erroneous operation may cause loss of control and an extremely dangerous situation may occur. It may also cause amp trouble. Should moisture enter and cause erroneous operation, send the MC330CR out for repair and inspection.
Always turn the power switches on and off in the following order: ON: Transmitter -> receiver (amp switch) OFF: Receiver (amp switch) -> transmitter If the power switches are operated in the opposite order, the vehicle may run unexpectedly and an extremely dangerous situation may occur.
When going to and returning from the circuit, and when storing the model, always remove the Nicd/NiMH battery. If the switch is turned on erroneously, control may be lost or a fire may start.

CAUTION

If a peddle or other foreign object gets caught in the gears or the vehicle hits an obstruction, do not try to forcefully run vehicle. Forcefully running the vehicle will cause trouble.
Do not touch the motor or amp immediately after running. Touching the motor or amp immediately after running may result in serious burns.
When making adjustments, remove the motor, or place the model on a stand, so that it cannot run.

Special Markings

Pay special attention to the safety at the parts of this manual that are indicated by the following marks.

Mark	Meaning
DANGER	Procedures which may lead to a dangerous condition and cause death or serious injury to the user if not carried out properly.
WARNING	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 probability of superficial injury or physical damage is high.
CAUTION	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.

Symbol: ⦻ ; Prohibited
Symbol: ⚠ ; Mandatory

Figure from the manual

SET UP

Neutral, high, and brake MAX points setting

⚠️ CAUTION

Set the steering angle adjustment function (ATV) to 100% and the ABS function and acceleration function to OFF using the transmitter throttle channel function.
If the steering angle is too large or the ABS and acceleration functions are on, erroneous operation may occur.

*When using the ABS function, after setting up the MC330CR, stop the reverse function, then turn on the ABS function. If the ABS function is on, the MC330CR cannot be set up correctly.

Before setting each point, set the transmitter throttle channel trim to neutral.

Turn on the power in transmitter -> amp order.

Step	Neutral point setting	High point setting	Brake MAX point setting
2	Transmitter throttle operation: Neutral stateMC330CR (Pushbutton switch operation): Press the pushbutton switch. (0.5 secs or longer) (Confirmation beep sounds)Checker LED: Continuous single blink	Transmitter throttle operation: Full high stateMC330CR (Pushbutton switch operation): Press the pushbutton switch. (Confirmation beep sounds)Checker LED: Continuous double blink	Transmitter throttle operation: Full brake stateMC330CR (Pushbutton switch operation): Press the pushbutton switch. (Confirmation beep sounds.)Checker LED: If the LED goes out, setting is complete.

Since the data is read at the end of setting of all points, the points cannot be set independently.
If the amp power was turned off during setting, the setting points cannot be memorized. (The previous settings are retained.)
The confirmation beep sounds only when the motor was connected.

If the LED does not go off but blinks rapidly, setting was not performed normally. Repeat setting from "Neutral point setting".

Continuous rapid blink

Cancelling the reverse function

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)

Reverse function cancellation
- MC330CR (Pushbutton switch operation): While pressing the pushbutton switch,
- MC330CR (Power switch): set the power switch to ON.

When desired, you can enable the cancelled reverse function by repeating the operation shown at the left. (The reverse function is 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.

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.

Protection Type	Description
Overcurrent protection	When an overcurrent flows due to an output short circuit, etc., the overcurrent protection circuit automatically limits the current to protects the FET.→ Remove the cause of the short circuit, etc. before operating the model again.
Heat protector	When abnormal heating of the FET due to an overload, etc. is detected, the heat protector operates so that the speed is gradually reduced.→ When the FET temperature drops, the heat protector automatically resets. However, remove the cause of the overheating before operating the model again.
Low voltage operation	When the Nicd/NiMH battery voltage drops, this function limits the motor output current and ensures steering 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
Amp power ON	(Reverse operation set)Single blink (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 / brake	On*Becomes brighter nearer the brake MAX point.
Brake MAX point	Off
(Amp power left on alarm) When the transmitter power was turned off first.	Blinks. (Confirmation beep also sounds.)Not used with PCM receivers.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.

FUTABA CORPORATION
oak kandakajicho 8F 3-4 Kandakajicho, Chiyoda-ku, Tokyo 101-0045, Japan
TEL: +81-3-4316-4820, FAX: +81-3-4316-4823

Figure from the manual