UL Rated, Isolated
Current Loop Converter
Model 232CLDR
www.advantech-bb.com
PRODUCT FEATURES
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Converts RS-232 to 20mA current loop
2000V optical isolation protection from transients
One Transmit current loop & Receive current loop
Current loops can be set to Active or Passive
-40 to 80°C wire operating temperature
Model 232CLDR is a DIN rail mountable RS-232 to current loop converter.
It is wide temperature rated and UL Recognized for industrial applications.
It has one optically isolated 20 mA transmit loop and one optically isolated
receive loop. Each loop can be set to either “Active” or “Passive.” When set
to “Active” an isolated 20 mA current is supplied for each loop (Transmit and
Receive). A 10 to 30 VDC power supply (required, not included) provides
power to the converter and both current loops.
ORDERING INFORMATION
MODEL
SERIAL
CURRENT LOOP
CONNECTOR
POWER SOURCE
FOR SERIAL SIDE
NUMBER
CONNECTOR
232CLDR
Terminal Block
Terminal Block
External Power Supply
ACCESSORIES
MDR-20-24 - DIN rail mount power supply 24VDC, 1.0 A output power
The 232CLDR communicates at baud rates up to 19.2 kbps and can extend
communications up to 600 meters (2,000 ft.). 2,000V optical isolation protects
equipment from damaging ground loops and surges. Two LED’s indicate data
flow. Connections are made on terminal blocks.
DRPM25 - 35mm DIN rail to panel mount bracket, 25mm wide
Current Loop Explained
Current loop devices use Current On or Current Off to transmit binary digits.
Current loop signals can often transmit over circuits that serial signals can’t
traverse reliably, due to distance, marginal conductors and electrical noise.
Current loop converters from B+B SmartWorx interface RS-232 to the most
common current loop ports – 20mA with open circuit voltages up to 30 V – at
a maximum baud rate of 19.2 kbps. High speed optical isolators couple and
isolate Transmit and Receive data. All B+B SmartWorx’ current loop converters
have a Transmit (T+ and T-) loop and a Receive (R+ and R-) loop. Each loop
may be operated as an active or passive loop. When the converter needs to
provide the loop current, a 12 VDC power supply is required for the current loop
side.
Contact B+B SmartWorx for information on modifications for higher loop
currents and voltages.
All product specifications are subject to change without notice.
232CLDR_3217ds
orders@advantech-bb.com
support@advantech-bb.com
Corporate Headquarters: 707 Dayton Road, PO Box 1040 Ottawa, IL 61350 USA 815-433-5100 Fax 433-5104
European Office: Westlink Commercial Park, Oranmore Co. Galway Ireland +353 91 792444 Fax +353 91 792445