Advantech BB-485OPDR-HS

High-Speed RS-422/485 Isolated Repeater

  • 2 kV Isolation
  • IEC Level 2, ± 4 kV Contact ESD Protection, IEC Level 3, ± 8 kV air ESD Protection
  • 1.5 Mbps Data Rate
  • -40 to 80°C Operating Temperature
  • NEMA TS2


The BB-485OPDR-HS is a high speed, optically isolated RS-422/485 repeater that supports data rates up to 1.5 Mbps, making it suitable for use in fieldbus systems such as Profibus. The BB-485OPDR-HS provides 2 kV digital Isolation with 8 kV air ESD protection and 600 W transient voltage suppression on the data lines. The BB-485OPDR-HS can be used to extend the range of a network up to 4000 ft. (1.2 km), depending on data rates, and to add additional nodes. 2-Wire RS-485, 4-Wire RS-485 and RS-422 are supported. Data signals and the power inputs connect to built-in terminal blocks. The repeater operates on externally sourced 10 to 30 VDC power. The enclosure has a DIN rail mount that is designed to fit easily on a standard 35mm rail.

Part Number Description
BB-4850PDR-HS High Speed Isolated RS-422/485 Repeater
Connector Terminal Block
TDA(-), TDB(+), RDA(-), RDB(+), GND
RS-485 2-Wire and 4-Wire
Protected GND on Isolated Side
Data Rate
Bit-Wise Enabled Up to 1.5 Mbps
Method Optical
Rating 2000 V
Surge Suppression
Method TVS
Rating 12 V bi-directional avalanche breakdown device
600 W peak power dissipation
Response Time < 1 pico-second
Connector Terminal Block
Voltage 10 to 30 VDC
Power Consumption 700 mW steady state, inrush current at 24 VDC = 750 mA for 500 μS
Source External
Terminal Blocks
Wire Size 24 to 14 AWG
Torque 4 kgf-cm
LED Indicators
2 Data LEDs (Green) Data LED for each side of isolator
Flashes when data transmitted
Material Plastic
IP Rating 20
Dimensions 1.0 x 3.1 x 3.7 in (2.5 x 7.9 x 9.5 cm)
Mounting 35 mm DIN (Panel Mount Adapter is available)
Operating Temperature -40 to 80 C (-40 to 176 F)
Storage Temperature -40 to 85 C (-40 to 185 F)
Operating Humidity 0 to 95% Non-condensing
MTBF 117316
MTBF Calculation Method MIL217F Parts Count Reliability
Approvals and Certifications
Agency Approvals CE, FCC, NEMA TS2
EN61000-6-2 (Heavy Industrial)
EN61000-4-2 (ESD) ± 4 kV contact, ± 8 kV air
EN61000-4-3 (RI) 10 V/m, 80-1000 MHz; 3 V/m 1.3 to 2.7 GHz
EN61000-4-4 (EFT Burst) ± 2 kV DC ports; ± 1 kV signal ports
EN61000-4-5 (Surge) ± 2 kV common; ± 1 kV differential
EN61000-4-6 (CI) 10 Vrms, 0.15 to 80 MHz
Other IEC60068-2-27 (Shock) 50 G Peak, 11 ms, 3 axes
IEC60068-2-6 (Vibration) 140-500 Hz, 4G, 3 axes
IEC60068-2-32 (Drop) 10 total drops from sides, corner, edges
Emissions FCC Class B, CISPR Class B (EN55022)

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