RadioLink COOL 9030

Safety Precautions

• Please ensure all wires and connecting parts are well insulated before connecting the ESC to related parts. Short-circuiting will damage the ESC.
• Read the manuals of all power equipment and the frame carefully before using the ESC to ensure power is reasonably matched, and avoid motor overload due to incorrect power combination, which will eventually damage the ESC.
• Carry out wiring and debugging when the car is suspended for your safety and others'.
• Disconnect the battery and ESC after use. If the battery is not disconnected, even if the ESC switch is turned off, the ESC will continue to consume power. If the battery is connected for a long time without use, it will eventually be completely discharged, which will cause malfunction of the battery or ESC.

RadioLink is not responsible for any damage caused by incorrect operation!

Part 1. Introduction of COOL 9030

1.1 COOL 9030 Overview

1 Power input: The power input of the ESC is connected to the power supply. The voltage range of the connected power supply should be within 6~16.8V (for non-lithium batteries: NI-MH battery, nickel-cadmium batteries and lead-acid batteries, etc.), and 6~18V (for lithium batteries). Power supply outside this voltage range cannot guarantee system stability.

Note: Except for the voltage range, lithium batteries and non-lithium batteries have different using instructions. When using a lithium battery, please insert jumper cap 3 of COOL 9030. When using a non-lithium battery, please remove jumper cap 3. If the status of jumper cap 3 does not match the actual battery used, the battery may be seriously over-discharged and damaged. Confirm the battery type of the ESC and check jumper cap status before use. Refer to Part 4 for details.

2 Motor output: The motor connector connects to a brushed DC motor. The rated working voltage of the connected brushed DC motor must meet the power supply voltage range of the ESC. Otherwise, stable operation of the ESC and the connected motor cannot be guaranteed.

3 Signal input: The signal input connects to the PWM signal input (single channel signal of the receiver) to the ESC. The connector also has a BEC output function, supplying power to the receiver or servo (maximum current is 5A).

4 Control switch: Controls the working state of the ESC. When turned on, the ESC works with an output voltage of 5.5V or 7.5V. When turned off, the ESC stops working with no output voltage.

5 Jumper cap: Used to select the ESC's operating mode, input power supply type, and BEC output voltage. Details will be introduced later.

6 Power light: Indicates the current self-check and power supply status of the ESC system. The color is green.

7 Status light: Indicates the current self-check and operating status of the ESC system. The color is red.

1.2 Specifications

Part 2. Connection of COOL 9030

Connect the signal cable of the ESC with the receiver correctly before use. Then connect the motor output cable of the ESC with the motor accurately (You can choose the connection direction based on actual usage.). Make sure the negative and positive poles of the power input cable are not reversed.

Connection to the receiver:

Plug the receiver connection cable of the ESC into the throttle channel of the receiver. The receiver connection cable of the ESC outputs 5.5V to the receiver and servo, so please do not supply additional power to the receiver. Otherwise, the ESC may be damaged.

Connection to the motor:

There is no positive or negative connection between the brushed motor and the ESC. If the motor turns incorrectly, you can directly change the direction of the motor through the servo phase in the transmitter's menu, or exchange the connection of the two motor output cables of the ESC. Ensure the right connection and good contact between the motor and the ESC.

Connection to the battery:

The battery connection cable of the ESC has positive and negative poles. When connecting the battery, ensure the (+) positive pole of the cable connects to the (+) positive pole of the battery, and the (-) negative pole connects to the (-). If the ESC is connected reversely, it will be damaged. Warranty service will not be provided if the ESC is damaged due to reverse connection of the power supply.

2.1 Power Input

This brushed DC ESC supports two types of batteries as power supply: non-lithium batteries (NI-MH battery, nickel-cadmium batteries and lead-acid batteries, etc.) and lithium batteries (polymer lithium batteries). To ensure system stability, the input power supply voltage must be within 6.0V to 16.8V (6V to 18V under lithium battery mode).

The battery voltage protection methods differ for the two battery types. Please refer to the table below:

Note: The under-voltage and half-power protection values for lithium batteries are based on standard lithium batteries (4.2V max voltage per cell). The over-voltage protection value is based on high-voltage lithium batteries (4.35V max voltage per cell).

The three conditions are explained as follows:

1. Under-voltage protection: When the input power voltage is lower than this value, the ESC stops motor output and does not respond to the input signal. The power light flashes as a reminder. When the battery voltage rises back to the half-power protection value, the system exits under-voltage protection and returns to normal operation.
2. Half-power protection: When the input power supply voltage is lower than this value, the ESC reduces the motor output power to half. The ESC still responds to the input signal. When the battery voltage rises to near the over-voltage protection value, the system does not exit half-power protection. However, if the battery voltage drops to the under-voltage protection value, the system exits half-power protection and enters under-voltage protection, with no motor output.
3. Over-voltage protection: When the input power voltage is higher than this value, the ESC stops motor output and does not respond to the input signal. The power light flashes as a reminder. When the battery voltage drops below the over-voltage protection value, the system resumes normal operation and motor output is restored.

2.2 Motor output

This brushed DC ESC supports operation and output control of brushed DC motors only. The instantaneous peak output current can reach 100A. Select a brushed DC motor correctly to avoid ESC damage. Connect the "M+" lead wire to the motor's positive pole (usually yellow or red) and the "M-" lead wire to the motor's negative pole (usually blue or black). Ensure the brushed DC motor load connected to the ESC motor interface does not have an additional circuit connection with the input power port, otherwise the ESC system will not operate normally.

Refer to the table below for matching the speed of brushed DC motors (conventional models) with power batteries (conventional lithium and Ni-MH batteries):

Note: This table is for reference only. Analyze concrete cases in specific application scenarios to prevent ESC, motor, or battery damage.

2.3 Signal input

This brushed DC ESC identifies only the PWM signal output by a single receiver channel. Signals with multiple channel codes (PPM, S.BUS, etc.) are not recognized. The PWM signal characteristics must meet the parameters in the table below for stable ESC control.

Note: PWM signal delay parameters measure the ESC system's fault tolerance for sudden signal interruption (loss). The value refers to the period from signal interruption to recovery.

The ESC system has basic control functions and responds to abnormal control input signals in two situations:

1. No signal input: When connected to power, if the ESC does not detect the throttle input signal or the throttle signal delay exceeds the PWM signal delay parameter, the system identifies it as a no-signal input state. This is indicated by a flashing status light and motor beeping.
2. Abnormal Signal input: When connected to power, if the throttle input signal is not within the midpoint range (factory default midpoint is 1500 us; midpoint range is ±50 us, i.e., 1450 us to 1550 us. Calibration results prevail), the system identifies it as an abnormal signal input state. This is indicated by a flashing status light and motor beeping.

Note: To resolve abnormal signal states, set the throttle input signal back to the midpoint range.

Part 3. Throttle calibration

This ESC system uses the standard receiver channel signal as a reference. However, differences in receiver and remote controller settings (e.g., servo output ratio, servo midpoint) may cause unexpected effects. Calibrate the throttle to adjust the ESC to the receiver's signal output for desired effects.

The COOL 9030 is a two-way ESC, and its throttle calibration method is the same as common two-way ESCs. The steps are as follows:

ESC Calibration Method

• Preparation: Connect the ESC, motor, battery, and receiver (ensure the receiver is bound to the transmitter and outputs a PWM signal). Turn on the transmitter and keep other devices powered off.
• Step 1: Push the throttle stick to the highest position and hold it. Power on the ESC and receiver. The motor will beep twice. (If no beep, refer to precautions).
• Step 2: After two beeps, push the throttle stick to the lowest position and hold it. The motor will beep twice again.
• Step 3: After two beeps, push the throttle stick to the neutral position and hold it. The motor will emit a series of beeps, indicating successful throttle calibration.

Note:

1. The throttle stick positions are: highest, lowest, neutral. If the motor does not beep at the highest position, change the order to lowest, highest, neutral for calibration.
2. Before calibrating, set the transmitter's TRIM to "0" to avoid issues.

Part 4. Usage of Jumper Cap

This ESC has four sets of jumper cap switches (numbered 1 to 4 from outside to inside). Inserting a jumper cap connects the switch; removing it disconnects it.

Jumper caps 1 and 2 set the ESC's operation mode. Jumper cap 3 sets the battery type. Jumper cap 4 sets the BEC output voltage.

The table below shows the correspondence between jumper cap states and operation modes:

Normal mode: Pull trigger inward for forward, push forward for backward. No brake between forward/backward transitions. Low heat, suitable for confined spaces.

Brake mode: Common mode. Pull trigger inward for forward. Change trigger from inward pull to forward push for brake. Return trigger to neutral, then push forward for reverse.

Racing mode: Pull trigger inward for forward, push forward for brake. No reverse operation.

Climbing mode: Pull trigger inward for forward, push forward for reverse. Trigger at neutral position performs brake.

Battery Type

Change Jumper cap 3 to match the battery type. Insert for lithium battery, remove for non-lithium battery. Incorrect setting may cause serious battery over-discharge and damage. Ensure Jumper cap 3 is set correctly before use.

BEC output

Change Jumper cap 4 to select BEC output voltage based on servo requirements. Remove Jumper cap 4 for common 5V servos (outputs 5.5V). Insert Jumper cap 4 for high-voltage servos (outputs 7.5V). Ensure Jumper cap 4 is set correctly to avoid servo damage.

Part 5. ESC status

The COOL 9030 ESC has two indicator lights (red and green) and motor sound to display its status. The green power light indicates self-check and power supply status. The red status light indicates self-check and operating status. Lights can be on, off, or flashing. Flashing interval varies by prompt.

The ESC also uses motor vibration and sound. Three motor sound prompt states exist: short beep, long beep, and tone beep. Beep number and interval vary by prompt.

Motor sound and indicator lights can work independently or coordinately. Some statuses show only sound or light (independently), while others show both (coordinately).

5.1 Motor sound

When the device starts normally, the red and green indicators should be on. The motor beeps to prompt self-check, battery type, and operation allowed. If motor sound is incomplete, inspect the ESC and connected equipment.

Note: Tone beep consists of three consecutive notes (Do-Re-Mi). Short beep count varies by battery type. Set Jumper cap 3 to match the battery. Non-lithium batteries produce one short beep. Lithium batteries produce short beeps equal to the number of cells (e.g., 4 short beeps for a 4S battery).

5.2 Indicator light

When the power and status lights are always on, the ESC is operating normally. If a light flashes with no motor sound, refer to the table below for system states:

Note: Mixed prompt modes execute two prompts simultaneously. Power light and status light prompts are independent.

5.3 Mixed prompt of motor and light

In mixed prompt mode, the red light is active, but the green light is off. For battery over-voltage or under-voltage warnings, only the indicator light prompt is shown, without motor sound. For high or low temperature warnings, motor sounds have a 1.5-second interval between consecutive beeps. For throttle signal loss or abnormal throttle signal, the interval is 2.5 seconds.

System states corresponding to mixed motor sound and indicator light prompts:

When in normal operating state, the motor responds to the signal. In other abnormal states, the ESC terminates motor operation and does not respond to signals. The system returns to normal operating state only after the fault is eliminated.

Technical Support Here

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