Advantech ADAM-4520-F Isolated RS-232 to RS-422/485 Converter
The ADAM-4520-F isolated RS-232 to RS-422/485 converter is engineered for industrial automation, SCADA systems, and legacy equipment modernization. This RS-232 to RS-422/485 converter enables seamless communication upgrades without replacing existing PC hardware or software. Perfect for facilities managers, automation engineers, and system integrators who need reliable serial protocol conversion with industrial-grade isolation protection, the ADAM-4520-F delivers transparent signal conversion, 3000 VDC isolation, and surge protection—making it ideal for noisy industrial environments where data integrity is critical.
Key Features
- Transparent RS-232 to RS-422/485 conversion — no software changes required
- 3000 VDC galvanic isolation protection for noise immunity
- Automatic RS-485 data flow control with intelligent direction switching
- Surge protection on RS-485 data lines for equipment safety
- Supports transmission speeds up to 115.2 kbps
- Extended communication range up to 4000 feet
- Compact DIN-rail mountable design for industrial installations
- Low power consumption for 24VDC operation
Technical Specifications
| Specification |
Details |
| Manufacturer |
B+B SmartWorx (Advantech) |
| Model Number |
ADAM-4520-F |
| Isolation Protection |
3000 VDC galvanic isolation |
| Input Interface |
RS-232 (DB-9 connector) |
| Output Interface |
RS-422/485 (terminal block) |
| Maximum Baud Rate |
115.2 kbps |
| Maximum Distance |
4000 feet (1200 meters) |
| Data Flow Control |
Automatic RS-485 direction control |
| Surge Protection |
Yes, on RS-485 data lines |
| Power Supply |
24 VDC |
| Operating Temperature |
0°C to 60°C |
| Mounting |
DIN-rail compatible |
Frequently Asked Questions
What is an RS-232 to RS-422/485 converter used for?
An RS-232 to RS-422/485 converter allows legacy RS-232 devices to communicate over longer distances using RS-422 or RS-485 protocols. The ADAM-4520-F enables this conversion transparently, making it essential for upgrading industrial communication networks without replacing existing equipment.
Does the ADAM-4520-F require software installation?
No. The ADAM-4520-F provides transparent conversion, meaning your existing PC hardware and software operate unchanged. Simply connect your RS-232 device to the converter's input and route the RS-422/485 output to your network—no drivers or configuration needed.
How does 3000 VDC isolation protect my equipment?
The 3000 VDC galvanic isolation in this isolated RS-232 to RS-422/485 converter breaks ground loops and protects against voltage spikes, surges, and noise common in industrial environments. This isolation prevents damage to connected devices and ensures reliable data transmission in harsh conditions.
What is automatic RS-485 data flow control?
Automatic RS-485 data flow control intelligently switches the converter between transmit and receive modes, eliminating the need for manual direction control. This feature ensures collision-free communication on half-duplex RS-485 networks, improving reliability and reducing configuration complexity.
