RioRand PWM DC Motor Speed Controller (8-50V, 30A) User Manual
Model: B09TXCW73S
1. Prodotto finitoview
The RioRand PWM DC Motor Speed Controller is designed for precise speed control of brushed DC motors. It features adjustable overcurrent and delay protection, multiple control modes, and a wide voltage input range, making it suitable for various DIY projects and electric ride-on modifications.

Davanti view of the RioRand PWM DC Motor Speed Controller, highlighting the speed adjustment knob and terminal blocks for power and motor connections.
2. Informazioni sulla sicurezza
This product is an electrical component. Please observe the following safety guidelines:
- Garantire l'alimentazione voltage is within the specified range of 8V to 50V DC.
- Only connect to brushed DC motors. This controller is non compatible with brushless motors or AC power.
- Verify wiring polarity (positive and negative) before applying power to prevent damage to the unit and connected components.
- Do not exceed the maximum current rating of 30A. The default setting is 20A.
- Installare il controller in un'area ben ventilata per evitare il surriscaldamento.
- Tenere fuori dalla portata dei bambini.
Failure to follow these instructions may result in electric shock, fire, or damage to the product.
3. Configurazione e installazione
3.1 Schema elettrico
Fare riferimento allo schema seguente per i collegamenti elettrici corretti. Assicurarsi che tutti i collegamenti siano ben saldi prima di accendere il dispositivo.

Detailed wiring diagram showing connections for DC power input (P+, P-), motor output (M+, M-), and function keys (K1, K2).
3.2 Fasi di connessione
- Connect DC Power Input: Connect your DC power source (8-50V DC) to the P+ (positive) and P- (negative) terminals.
- Collegare l'uscita del motore: Connect your brushed DC motor to the M+ (positive) and M- (negative) terminals.
- Optional Control Inputs: If using external control, connect the analog signal (0.2-4.8V) or Hall handle (1-4.2V) to the designated input pins (refer to advanced wiring diagrams if available).
- Tasti funzione: K1 (STOP) and K2 (SET) are used for configuration.

Illustration demonstrating how to connect the speed controller to a DC power source and a brushed DC motor.
3.3 Es. applicazioneample
This controller is ideal for modifying children's electric ride-on toys or integrating into various DIY DC motor projects.

The speed controller shown on a workbench, suggesting its use for modifying children's electric ride-on vehicles and DIY projects.
4. Istruzioni per l'uso
4.1 Speed Control Modes
The controller supports three methods for speed adjustment:
- On-board Knob Adjustment: Rotate the potentiometer knob on the controller for 0-100% smooth speed adjustment.
- 0.2-4.8V Analog Signal Control: Connect an external analog signal source for speed control.
- 1-4.2V Hall Handle Control: Use a Hall effect throttle handle for speed regulation.

Displays the speed controller along with a throttle handle, indicating the three control modes and recommended power limits.
4.2 Adjustable Overload Protection
The controller features adjustable overcurrent and delay protection to prevent damage from motor stalls or sudden current spikes.
- Current Levels: 6 levels from 5A to 30A (default 20A).
- Impostazioni di ritardo: Optional delay settings to prevent false triggers.
When an overload is detected, the output will be cut off, and the LED indicator will flash.

Image showing the speed controller and a child's electric car, emphasizing the adjustable overload protection feature that prevents damage during motor stalls.
4.3 Setting Current Levels and LED Indicators
The controller uses LED indicators for status checking and button settings for current levels.
- To Enter Current Setting Mode: Press and hold the K2 button. The LED will start blinking.
- To Cycle Through Current Levels: Press K2 repeatedly to cycle through the 6 current levels (5A, 10A, 15A, 20A, 25A, 30A).
- To Confirm Setting: The LED will become solid when a level is selected and confirmed.
- Stato LED:
- LED OFF / Solid Green: Normal Operation
- LED Blinking Red: Overload Protection Triggered
- LED Fast Flashing: Current Level Setting Mode Active
All custom settings are saved after power off, eliminating the need to reset them for daily use.

Close-up of the speed controller's LED indicators and function keys (K1, K2), explaining how to enter current setting mode and interpret LED signals.
5. Manutenzione
To ensure optimal performance and longevity of your RioRand PWM DC Motor Speed Controller, follow these maintenance guidelines:
- Mantenere pulito: Regularly clean the controller's exterior with a dry, soft cloth. Avoid using liquids or abrasive cleaners.
- Ventilazione: Ensure the ventilation holes on the casing are not obstructed to allow for proper heat dissipation.
- Verifiche della connessione: Periodically inspect all wiring connections for tightness and signs of wear or corrosion. Re-tighten if necessary.
- Condizioni ambientali: Operate and store the controller in a dry environment, away from excessive dust, moisture, and extreme temperatures.
- Evitare danni fisici: Protect the unit from impacts or drops that could damage internal components.
6. Risoluzione Dei Problemi
If you encounter issues with your speed controller, refer to the following common problems and solutions:
- Il motore non risponde:
- Check power input: Ensure DC power (8-50V) is correctly connected and active.
- Verify motor connections: Confirm motor wires are securely connected to M+ and M-.
- Check compatibility: Ensure you are using a motore CC spazzolato. This controller does not work with brushless motors or AC power.
- Inspect for damage: Look for any visible signs of damage to the controller or wiring.
- LED Blinking Red (Overload Protection):
- This indicates an overcurrent event (e.g., motor stall, excessive load).
- Reduce the load on the motor or check for obstructions.
- Considera l'incrementoasing the overcurrent protection level (refer to Section 4.3) if your motor's normal operating current is higher than the current setting, but do not exceed 30A.
- Allow the unit to cool down if it feels hot.
- Controllo della velocità incoerente:
- Ensure the control knob or external signal source is functioning correctly.
- Check for loose connections in the control signal wiring.
- Surriscaldamento dell'unità:
- Assicurare un'adeguata ventilazione attorno al controller.
- Verify that the motor's power requirements do not exceed the controller's maximum limits (Max 30A).
- Ridurre il carico sul motore.
Se i problemi persistono dopo aver provato questi passaggi per la risoluzione dei problemi, contattare l'assistenza clienti.
7. Specifiche
Detailed specifications for the RioRand PWM DC Motor Speed Controller:

Specification table for the RioRand PWM DC Motor Speed Controller.
| Articolo | Specificazione |
|---|---|
| Nome del prodotto | RioRand PWM DC Motor Speed Controller |
| Ingresso volumetage | Corrente continua 8V – 50V |
| Corrente predefinita | 20A |
| Max corrente | 30A |
| Overcurrent Level | 5A / 10A / 15A / 20A / 25A / 30A (6 Levels) |
| Impostazione del ritardo | Multi-Gear Adjustable Delay Time |
| Modalità di controllo | Potentiometer Control / 0.2 – 4.8V Analog Signal / 1 – 4.2V Hall Handle |
| Gamma di regolazione della velocità | 0% – 100% Stepless Speed |
| Motore applicabile | Brushed DC Motor Only |
| Materiale del guscio | Lega di alluminio |
| Spia luminosa | LED Status Prompt (Normal / Overload / Setting) |
| Funzione speciale | Power-Off Memory, Overload Protection, Stall Protection |
| Applicazione | Kids Electric Ride-On, DIY Motor Modification, Small DC Equipment |
8. Informazioni sulla garanzia
This RioRand PWM DC Motor Speed Controller comes with a Garanzia di 3 mesi dalla data di acquisto. La garanzia copre i difetti di materiali e di fabbricazione in condizioni di normale utilizzo.
La garanzia non copre i danni causati da:
- Installazione o cablaggio non corretti.
- Superamento del volume specificatotageo limiti attuali.
- Connection to incompatible motor types (e.g., brushless motors, AC power).
- Physical damage, misuse, neglect, or unauthorized modifications.
- Normale usura.
Conservare la prova d'acquisto per eventuali richieste di garanzia.
9. Supporto
For further assistance, technical support, or warranty inquiries, please contact RioRand customer service through the platform where you purchased the product. Provide your product model number (B09TXCW73S) and a detailed description of your issue to expedite support.
You may also visit the official RioRand store page for additional product information and resources: RioRand Store