Key facts
- Brand
- FrSky
- Model
- RB-40
- Category
- Other Electronics
- Industry
- Automotive
- Documents
- 4
- Languages
- EN
- Last added
- 2023-10-15
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FrSky RB-30/RB-40 Redundancy Bus Module User Manual
The FrSky RB-30/RB-40 is an electronic device featuring a triple-redundancy design with up to 24 PWM channels for high-voltage servos. It includes overload protection on each output channel and current sensors on the first eight channels (CH1-8) for real-time monitoring.
The module supports dual power inputs via XT30 or XT60 connectors, allowing it to select the higher voltage source between two batteries. The RB-40 variant features an LCD screen with a menu scroll button and a CNC aluminum and carbon fiber case, while the RB-30 is lighter at 100g compared to the RB-40's 260g.
FrSky RB-40 specifications
| Number of servos supported | up to 24 |
|---|---|
| Weight (RB-30) | 100g |
| Weight (RB-40) | 260g |
| Power connector (RB-30) | XT30 |
| Power connector (RB-40) | XT60 |
| Operating temperature range | -20℃~75℃ |
All FrSky RB-40 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
What is the maximum continuous current output for the RB-30?
The RB-30 provides a continuous current of 15A per channel (2*15A) at voltages between 5V and 8.4V.
What is the maximum continuous current output for the RB-40?
The RB-40 provides a continuous current of 30A per channel (2*30A) at voltages between 5V and 8.4V.
What is the input voltage range for the RB-30+/RB-40?
The device supports an input voltage range of DC 7V to 26V, with a recommended range of DC 11V to 26V.
How many PWM channels does the RB-30+/RB-40 support?
The device supports connecting up to 24 high-voltage servos with overload protection added to each output channel.
What is the maximum number of PWM channels supported?
The RB-30/RB-40 supports connecting up to 24 high-voltage servos.
Can the RB-30/RB-40 be used as an alternative to GR or S series receivers?
Yes, it can be used as an alternative to using a GR or S series receiver.