B And B Electronics 485LDRC9 Industrial RS-232 to RS-422/RS-485 Converter | Optically Isolated Serial Communication Converter
Specification Details
Brand: B&B Electronics
Model: 485LDRC9
Product Type: Industrial RS-232 to RS-422/RS-485 Converter
RS-232 Connector: DB9 Female / Terminal Block
RS-232 Signals: TD, RD, GND
RS-422 Connector: Terminal Block
RS-422 Signals: TDA(-), TDB(+), RDA(-), RDB(+), GND
RS-485 Modes: 2-Wire and 4-Wire
RS-485 Mode: Half-Duplex / Full-Duplex
Termination: Switchable 120 Ω
Isolation Method: Optical
Isolation Rating: 2000 V
Surge Suppression: TVS, 500 W peak
Power Input: 10–30 VDC
Power Consumption: 0.5 W
Mounting: 35 mm DIN Rail
Enclosure Material: Plastic
IP Rating: IP20
Dimensions: 1.0 × 3.1 × 3.7 in (2.5 × 7.9 × 9.5 cm)
Operating Temperature: -40°C to +80°C
Storage Temperature: -40°C to +85°C
Humidity: 0–95% non-condensing
LED Indicators: Power, TD, RD
Communication Protocol: Modbus ASCII/RTU
Approvals: CE, FCC, cULus Recognized
Typical Applications: PLC, SCADA, industrial automation, instrumentation, serial networking
Country Of Origin: Made In GERMANY
Condition: Used Excellent Working (As Per Photos)
Shipping: Fast & Safe Worldwide Shipping Available.
The B&B Electronics 485LDRC9 is an industrial-grade optically isolated RS-232 to RS-422/RS-485 serial converter designed to connect legacy RS-232 equipment with industrial RS-422 and RS-485 communication networks. Its optical isolation helps protect connected equipment from electrical noise and ground-potential differences, making it suitable for demanding industrial automation and control environments.
The converter supports 2-wire RS-485 half-duplex, 4-wire RS-485 full-duplex, and RS-422 full-duplex communication. A switchable 120 Ω termination resistor helps simplify installation on compatible serial networks. Built-in automatic Send Data Control eliminates the need for external software control of handshake signals.
The 485LDRC9 operates from an externally supplied 10–30 VDC power source and consumes approximately 0.5 W. Its 35 mm DIN-rail mounting design makes it convenient for PLC panels, industrial control cabinets, factory automation systems, instrumentation networks and other serial communication installations.
With -40°C to +80°C operating temperature, optical isolation, surge suppression and industrial communication support, the B&B Electronics 485LDRC9 is a practical solution for extending and protecting serial communications in industrial environments.
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