Current Loop to BB-232CL9R Serial Converter Features Optically isolated digital current loop to serial conversion Baud rates up to 19.2 kbps Inline installation Transmit (T+ and T-) loop and Receive (R- and R-) loop Each current loop may be operated active or passive Designed for 20mA digital current loop Power supply required, not included, sold separately Introduction Ordering Information Model BB-232CL9R is a port-powered RS-232 to current loop converter. No external Current Loop Power Source for Model No. Serial Connector power required for passive loop installations, but a power supply is required to generate Connector Serial Side an active loop (power supply sold separately). Port-powered or external BB-232CL9R DB9 Female Terminal Block power supply (sold separately) Current Loop Explained Current loop devices use Current On or Curre nt Off to transmit binary digits. Current Accessories Sold Separately loop signals can often transmit over circuits that serial signals cant traverse reliably, due BB-SMi6-12-V-ST - Power Supply, 12Vdc, 500 mA, stripped and tinned leads, Level VI to distance, marginal conductors and electrical noise. Current loop converters from Advantechinterface RS-232 to the most common current Specifications loop ports 20mA with open circuit voltages up to 30 V at a maximum baud rate of Serial Technology 19.2 kbps. High speed o ptical isolators couple and isolate Transmit and Receive data. All Advantech current loop converters have a transmit (T+ and T-) loop and a Receive Data Rate 19.2 kbps, maximum (R+ and R-) loop. Each loop may be operated as an active or passive loop. When the RS-232 converter needs to provide the loop current, a 12 VDC power supply is required for the current loop side. Connector DB9 female Signals TD, RD, GND Current Loop Connector Terminal block Signals T+, T-, R+, R-, GND Power Source Terminal block Input Voltage 12Vdc 100 mA Meantime Between Failures (MTBF) MTBF 714354 hours MTBF Calc. Method MIL 217F Parts Count Reliability Prediction Environmental Operating Temperature 0 to +70 C (+32 to +185 F) Storage Temperature -40 to +85 C (-40 to +185 F) Operating Humidity 0 to 95%, non-condensing Regulatory Approvals / Standards / Directives FCC Part 15, EN 55032 Class A Emissions 2011/65/EU amended by (EU) 2015/863 Reduction of Hazardous Substances Directive (RoHS) BB-USOPTL4-2P BB-USOPTL4-4P 0221ds All product specifications are subject to change without notice. BB-232CL9R 0321dsBB-232CL9R Dimensions BB-232CL9R