RTU suited for field, industrial relay-based use

R302 Modbus mixed signal remote terminal unit (RTU) from R2 Controls is intended for demanding field and industrial relay-based applications requiring remote sensing relay configuration, monitoring, and control with a high degree of input and output isolation and high current output control capabilities. Based on Silicon Laboratories 8051 system-on-chip processor, the RTU is said to provide remote sensing and high-speed remote relay control with its integrated opto-isolated digital inputs, analog inputs, Modbus communications protocol, high power relay outputs, and serial communications options.

“The R302 mixed signal RTU’s rugged design and flexible communications capabilities enable ease of adaptation into any remote industrial or field environment requiring high power remote relay output control, such as in oil and gas distribution systems, water flow monitoring and control applications, and integrated multiple control points in large industrial complexes,” said Tim Hinchey, company president and CEO.

Unit features 8 high-speed optically isolated digital inputs with pulse counting, 2 analog inputs, and 8 form 1C SPDT relay outputs. Digital input voltage levels range from 3-40 V ac or dc. Output relay contacts are rated at 10 A/120 V ac and have rubber snubber circuit protection. Field wiring uses 5.0 mm pluggable screw terminal blocks. RTU is priced at $269.

—Jeanine Katzel, senior editor, Control Engineering, jkatzel@reedbusiness.com

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