B+B SmartWorx 485LDRC9 Industrial RS-232 to RS-422/485 Converter
The B+B SmartWorx 485LDRC9 is a professional-grade RS-232 to RS-422/485 converter engineered for harsh industrial automation environments. This DIN rail mounted converter delivers 2000V two-way optical isolation and 500W surge suppression, making it ideal for manufacturing facilities, process control systems, and remote data acquisition applications where signal integrity and equipment protection are critical. Whether you're upgrading legacy RS-232 systems to modern RS-422/485 standards or extending communication distances up to 1.2 km, this industrial converter provides the reliability and performance your automation infrastructure demands.
Key Features
- 2000V two-way optical isolation protects equipment from voltage spikes and ground loops
- 500W surge suppression safeguards sensitive industrial equipment
- DIN rail mounting for compact panel integration in control cabinets
- Data rates up to 115.2 kbps with extended transmission distances to 1.2 km
- Wide operating temperature range: -40 to +80°C for extreme environments
- MODBUS and ASCII RTU protocol support for legacy and modern systems
- Flexible connectivity: RS-232 via terminal block or DB9 female connector
- RS-422/485 terminal block connections for industrial networks
- External 10–30 VDC power supply for flexible installation
Technical Specifications
| Specification |
Details |
| Manufacturer |
B+B SmartWorx |
| Part Number |
BB-485LDRC9 |
| Product Type |
Industrial RS-232 to RS-422/485 Converter |
| Mounting |
DIN Rail |
| Optical Isolation |
2000V two-way |
| Surge Suppression |
500W |
| Data Rate |
Up to 115.2 kbps |
| Maximum Distance |
1.2 km |
| Operating Temperature |
-40 to +80°C |
| Protocols Supported |
MODBUS, ASCII RTU |
| RS-232 Interface |
Terminal block or DB9 female connector |
| RS-422/485 Interface |
Terminal block |
| Power Supply |
External 10–30 VDC |
Frequently Asked Questions
What is an RS-232 to RS-422/485 converter used for?
An RS-232 to RS-422/485 converter bridges legacy serial devices with modern industrial networks. It converts single-ended RS-232 signals to differential RS-422/485 signals, enabling longer transmission distances, better noise immunity, and multi-drop network capabilities essential in automation and SCADA systems.
Why is optical isolation important in industrial converters?
Optical isolation eliminates ground loop noise and protects equipment from voltage transients common in industrial environments. The 485LDRC9's 2000V two-way isolation ensures signal integrity and equipment safety when connecting devices across different electrical grounds or in electrically noisy facilities.
Can this DIN rail converter handle extreme temperatures?
Yes. The B+B SmartWorx 485LDRC9 operates reliably from -40 to +80°C, making it suitable for outdoor installations, unheated warehouses, and high-temperature manufacturing environments where standard industrial equipment may fail.
How far can RS-422/485 signals transmit with this converter?
This converter supports transmission distances up to 1.2 km at 115.2 kbps, significantly extending range compared to RS-232's typical 15-meter limitation. This makes it ideal for connecting remote sensors, PLCs, and field devices across large industrial facilities.
