B&B Electronics 4WSD9OTB User Manual
P#9150-R001_4WSDxxOTB-0812ds - p1/4
www.bb-elec.com orders@bb-elec.com support@bb-elec.com
International Office: 707 Dayton Road PO Box 1040 Ottawa, IL 61350 USA 815-433-5100 Fax 433-5104
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PRODU
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B&B E
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ICS
Models: 4WSD9OTB/4WSD25OTB
Isolated Universal Converters
RS-232, 4-wire RS-422, 2-wire or 4-wire RS-485
Features
High Speed Communications. Supports data rates up to 115.2 kbps.
Extended communications. Supports distances up to 4000 ft (1200 m).
Removable terminal blocks for easy RS-422/RS-485 connections.
Switchable modes. Supports 2-wire RS-485, 4-wire RS-485, and full duplex RS-422.
Automatic RS-485 driver control. External software modifications are not required.
2000 VAC isolation. Reliable in harsh electrical conditions.
Functional Description
Isolates and converts RS-232 signals into RS-422 / RS-485 signals and vice versa. Unlike other
converters, external software is not required to control data flow. The RS-232 input is wired for DCE and
interfaced through a female DB25 or DB9 connector. RS-422 or RS-485 signals are connected to a
removable terminal block. External power is applied to separate removable terminal block. A 10
interfaced through a female DB25 or DB9 connector. RS-422 or RS-485 signals are connected to a
removable terminal block. External power is applied to separate removable terminal block. A 10
– 48 VDC
power supply (not included) is required.
Ordering Information
Model Number
Description
4WSD9OTB
Converter with female DB9 RS-232 Connector
4WSD25OTB
Converter with female DB25 RS-232 Connector
7175
Power 2-position Terminal Block
– one included
7372
Data 5-position Terminal Block
– one included
9PAMF6
6ft. Serial Cable DB9M to DB9F
485PS2
120 VAC to 12 VDC Power Supply
PS2EU-1000
220/240 VAC to 12 VDC Power Supply; 2-Prong Euro Plug
PS2UK-1000
220/240 VAC to 12 VDC Power Supply; 3-Prong UK Plug