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Modbus Organization

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ABB Ltd

ABB Totalflow XRC 6490, XRC 6790, XRC 6890

Type:  Remote Terminal Unit
Description:  The Totalflow XRC is an expandable electronic remote controller (RTU). These XSeries devices are full-featured units provided without an Integral Multivariable Transducer. Base configuration equipped with standard I/O designed to meet the requirements of many, low-cost measurement and automation projects. Base I/O includes 5 analog inputs, 4 digital outputs and 4 digital inputs; 2 of which can be configured as either status inputs or pulse accumulator inputs. I/O modules can be added to extend the hardware I/O capabilities. Multi-tube capability included with each unit and is invoked with a few configuration changes and interface connection to external transducers, either digital or analog. Users can perform additional programming with standard applications (holding registers and operations) or IEC 61131. Multiple protocols, including several versions of Modbus, are supported.
Connectivity:  Modbus
Features:  Significant hardening against over-current and transients; Base I/O on RC195 board - 5 AIs, 4 DIs (2 can be high speed PIs) and 4 DOs; Low power design operates as low as 8 ma (< 100 mW); Aluminum enclosure, powder coated; Rechargeable, lead acid batteries; Solar, AC or DC charging options; Dual level security code data protection; Monitors user limits for alarming; 40+ days historical records; Event log defaults to 200 events (user configurable); Complies with API 21.1 standard for custody transfer devices; Class I, Division 2 Groups C and D, F.M. and CSA Hazardous Area; Advanced embedded data logger; Exception reporting capability; Multiple protocol options including various Modbus protocols and others; User programmable Modbus register maps; User programmable math and logic sequences
Specifications:  Available in 3 different enclosures - XRC 6490 is 12.756" W, 17.230" H, 10.269" D; Weight: approx 15 lbs.; Maximum IO modules: 3 - XRC 6490, 6 - XRC 6790, 12 - XRC 6890; Max Battery Capacity: 26 AH - XRC 6490, 42 AH - XRC 6790, 140AH - XRC 6890; Designed to meet CSA/NRTL Class 1, Division 2, Groups C & D hazardous area classification; Mounting: Wall, pipe or direct; Dual-level security switch on-board; I/O Scan Rate: 1 time per second; Analog Inputs: 5 single-ended channels, 0-10 Vdc; Analog-to-Digital Resolution: 18 bit max resolution (0.00038% FS), 16 bit nominal resolution (0.0015% FS); Digital Inputs: 4 inputs configurable as active or passive with optional software de-bounce; Pulse Inputs: 2 of the 4 digital inputs can be used as pulse inputs (up to 20 Khz); Digital Outputs: 4 open channel FET transistor switches.