Advantech BB-4WSD25OTB /
BB-4WSD9OTB
Isolated In-line Serial Converter
- Modbus compatible serial conversion
- Removable terminal blocks for RS-422/485
- 2,000V two-way optical isolation
- Automatic Send Data Control - no software drivers necessary
Models 4WSD9OTB and 4WSD25OTB convert RS-232 to RS-422 or RS-485 (2 or 4-wire). 2,000V two-way optical isolation protects devices from power surges, spikes and ground loops in harsh electrical environments.
These in-line converters support distances up to 1,200 m (4000 ft.) and data rates up to 115.2 kbps. Switchable modes support 2-wire RS-485, 4-wire RS-485, and full duplex RS-422. Available with female DB9 or DB25 RS-232 inputs.
Removable terminal blocks for RS-422/485 and external power make wiring easy. Accepts external power from 10-48 VDC from an industrial power source or plug in power supply. The power supply is sold separately.
SPECIFICATIONS
SERIAL TECHNOLOGY | |
Data Rate | 115.2 kbps maximum |
LED Indicators | TD and RD |
RS-232 | |
Connectors | 4WSD9OTB: DB9 female 4WSD25OTB: DB25 female |
Signals | TD, RD, GND |
RS-422/485 | |
Connector | 4WSD9OTB: Terminal block, removable 4WSD25OTB: Terminal block, removable |
RS-485, 2-wire | Data A(-), Data B (+), GND |
RS-422/485, 4-wire | TDA(-), TDB(+), RDA (-), RDB(+), GND |
POWER | |
Input Required | 10-48 VDC |
Current Draw | 28 mA at 12 VDC (typical) |
MECHANICAL | |
Dimensions, 4WSD9OTB | 9.8 x 4.3 x 2.3 cm (3.9 x 1.7 x 0.9 in) |
Dimensions, 4WSD25OTB | 9.8 x 5.5 x 2.3 cm (3.9 x 2.2 x 0.9 in) |
MTBF | 179604 |
MTBF Calculation Method | MIL 217F Parts Count Reliability Prediction |
ENVIRONMENTAL | |
Operating Temperature | 0 to +70 °C (+32 to +158 °F) |
Storage Temperature | -40 to +85 °C (-40 to +185 °F) |
APPROVALS / CERTIFICATIONS - 4WSD9OTB, 4WSD25OTB | |
2004/108/EC | Electromagnetic Compatibility Directive |
2011/65/EU | Reduction of Hazardous Substances Directive |
EN 55022: +AC | Information technology equipment - Radio disturbance characteristics - Limits and methods of measurement |
EN 61000-1-1 | Generic Standards for Residential, Commercial and Light-Industrial Environments |
EN61000-4-2 | ESD Immunity |
EN61000-4-3: +A1 +A2 | Radiated Immunity |
EN61000-4-4 | EFT/Burst immunity |
EN61000-4-6 | RF Conducted Immunity |
ORDERING INFORMATION
MODEL NUMBER | RS-232 CONNECTOR | RS-485 CONNECTOR |
4WSD9OTB | DB9 Female | Removable Terminal Blocks |
4WSD25OTB | DB25 Female | Removable Terminal Blocks |
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