Description

B&B ELECTRONICS
MODEL: 485OPDR
RS-485 ISOLATED REPEATER
FEATURES:
EXTEND DATA UP TO 4000 FT / 1.2 KM
2000V OPTICALLY ISOLATED DATA LINES
-40 TO 80°C OPERATING TEMPERATURE
MODBUS ASCII/RTU
TECHNICAL SPECIFICATIONS:
RS-422/485:
CONNECTOR: TERMINAL BLOCK
SIGNALS: TDA(-), TDB(+), RDA(-), RDB(+), GND RS-485 2-WIRE AND
4-WIRE PROTECTED GND ON ISOLATED SIDE
ISOLATION
METHOD: OPTICAL
RATING: 2000 V
POWER
CONNECTOR: TERMINAL BLOCK
VOLTAGE: 10 TO 30 VDC
POWER CONSUMPTION: 0.7 W
SOURCE: EXTERNAL
TERMINAL BLOCKS
WIRE SIZE: 24 TO 14 AWG
TORQUE: 4 KGF-CM LED INDICATORS

The B&B Electronics 485OPDR is an RS-485 isolated repeater for marine control system networks. It extends serial data links up to 4000 ft (1.2 km). Its data lines are optically isolated at 2000 V, and it handles RS-485 in 2-wire and 4-wire form with Modbus ASCII/RTU traffic. Power comes from an external 10-30 V DC source with a draw of 0.7 W, and the unit carries LED indicators. Data and power connections are made on terminal blocks. This unit is supplied in used condition.

Key Features

✓ Data extension up to 4000 ft / 1.2 km

✓ 2000 V optical isolation on data lines

✓ -40 to 80°C operating temperature

✓ RS-485 2-wire and 4-wire, Modbus ASCII/RTU

✓ 10-30 V DC external supply, 0.7 W consumption

Marine Applications

✓ Long Modbus RTU runs between engine control room and machinery panels

✓ Isolating serial links between alarm monitoring PLCs and remote I/O

✓ Extending RS-485 tank gauging sensor networks

✓ Separating ground potentials between switchboard and automation cabinets

Technical Support

Prota Marine provides technical support, repair and onboard installation for the RS-485 isolated repeater and the wider marine control system. Our engineers can help with fault diagnosis on serial communication links and offer commissioning support once the unit is wired in.