ABB GRBTU-01 Remote Terminal Unit | 3BSE013175R1

ABB GRBTU-01 Remote Terminal Unit – Advanced SCADA Data Acquisition for Distributed Control Systems

The ABB GRBTU-01 (Part No. 3BSE013175R1) is a high-performance Remote Terminal Unit (RTU) engineered for mission-critical data acquisition and control in distributed industrial automation environments. Designed for seamless integration with ABB System 800xA and Advant OCS platforms, this RTU serves as the intelligent communication bridge between field instrumentation and central SCADA systems—enabling real-time monitoring, remote control, and supervisory operations across power distribution, water/wastewater, oil & gas, and process automation applications.

Core Technical Specifications

• Model Designation: GRBTU-01 (3BSE013175R1)
• System Compatibility: ABB System 800xA, Advant OCS distributed control systems
• Digital Inputs: Binary status signals (dry contact, wet contact configurable)
• Analog Inputs: 4-20 mA, 0-10V DC (configuration-dependent)
• Digital Outputs: Relay contacts or solid-state binary outputs
• Analog Outputs: 4-20 mA current loop (configuration-dependent)
• Communication Protocols: Modbus RTU, PROFIBUS DP, IEC 60870-5-101/104, DNP3, ABB proprietary protocols
• Data Rate: Up to 12 Mbps (protocol and interface dependent)
• Connection Interfaces: RS-232, RS-485 serial, Ethernet 10/100 Mbps, fieldbus connections
• I/O Module Support: ABB S800 I/O modules, third-party field devices via standard protocols
• Power Supply: 24V DC nominal (18-30V DC operating range)
• Power Consumption: 5-10W typical
• Operating Temperature: -25°C to +70°C (extended industrial range)
• Storage Temperature: -40°C to +85°C
• Humidity: 5% to 95% RH non-condensing
• Vibration/Shock: IEC 60068-2-6 and IEC 60068-2-27 compliant
• Enclosure Rating: IP20 (for control cabinet installation)
• Mounting: DIN rail or panel mount in system rack
• Dimensions: Approx. 150 mm (H) × 100 mm (W) × 120 mm (D)
• Weight: 0.5-0.8 kg
• Certifications: CE, UL, CSA, IEC 61131, IEC 61850 compliant

Advanced RTU Functionality

Multi-Protocol Communication Gateway: The GRBTU-01 functions as a versatile protocol converter, enabling legacy field devices using Modbus RTU or IEC 60870-5-101 to communicate with modern Ethernet-based SCADA systems via IEC 60870-5-104 or DNP3 over TCP/IP. This eliminates costly device replacements during system modernization projects.

Intelligent Data Acquisition: Equipped with onboard processing capabilities, the RTU performs local data validation, timestamp synchronization, and event buffering. During communication outages, the unit stores up to 10,000 time-stamped events in non-volatile memory, ensuring zero data loss and seamless recovery when connectivity is restored.

Distributed Control Logic: Execute simple control sequences locally within the RTU using ladder logic or function block programming. This distributed intelligence reduces network traffic and enables autonomous operation of critical safety interlocks even during master station failures.

Comprehensive Diagnostics: Built-in self-diagnostics continuously monitor communication link status, I/O module health, power supply voltage, and internal temperature. Alarm notifications are transmitted to the SCADA master via configurable priority levels, enabling proactive maintenance and rapid fault isolation.

Application Scenarios & Industry Solutions

Electric Power Distribution: Deploy in substations and distribution networks to monitor circuit breaker status, transformer loading, voltage/current measurements, and protective relay alarms. The GRBTU-01's IEC 60870-5-104 support ensures compliance with utility SCADA standards while the extended temperature range enables outdoor installation in non-climate-controlled kiosks.

Water & Wastewater Management: Interface with pump stations, lift stations, and treatment plants to acquire flow rates, tank levels, pressure readings, and equipment run status. Modbus RTU connectivity supports legacy PLCs and variable frequency drives, while Ethernet uplinks enable centralized monitoring across municipal water networks spanning hundreds of remote sites.

Oil & Gas Pipeline Monitoring: Monitor pipeline pressure, flow meters, valve positions, and leak detection sensors across geographically dispersed gathering systems and transmission pipelines. The RTU's rugged design withstands harsh environmental conditions in remote wellhead installations, compressor stations, and metering facilities.

Industrial Process Automation: Integrate with ABB System 800xA DCS to extend I/O capacity to remote process areas without costly fiber optic cable runs. The GRBTU-01 aggregates signals from temperature transmitters, level switches, and motor control centers, transmitting consolidated data to central controllers via serial or Ethernet links.

System Integration & Architecture

ABB System 800xA Integration: The GRBTU-01 appears as a native I/O cluster within the 800xA Control Builder engineering environment. Configuration is performed using the same graphical tools used for local S800 I/O, ensuring consistent engineering workflows and simplified maintenance. The RTU supports redundant communication paths for high-availability applications.

S800 I/O Module Compatibility: Connect ABB S800 digital input, digital output, analog input, and analog output modules directly to the GRBTU-01 via ModuleBus. This modular architecture enables flexible I/O configurations tailored to specific site requirements, from 16-point compact installations to 512-point high-density applications.

Third-Party Device Integration: Leverage standard Modbus RTU master/slave functionality to interface with non-ABB devices including power meters, weather stations, gas analyzers, and programmable logic controllers. The RTU supports up to 247 Modbus slave addresses, enabling cost-effective integration of existing field equipment.

Related System 800xA & Communication Products

Configuration & Commissioning

Hardware Installation: Mount the GRBTU-01 on a DIN rail within a control cabinet or NEMA-rated outdoor enclosure. Connect 24V DC power supply to the designated terminals, observing polarity markings. Install S800 I/O modules on the ModuleBus or connect serial/Ethernet cables to communication ports.

Software Configuration: Launch ABB Control Builder M (800xA engineering tool) and add the GRBTU-01 to the hardware configuration tree. Assign communication parameters (baud rate, protocol, IP address), configure I/O channel mappings, and define alarm thresholds. Download the configuration to the RTU via Ethernet or serial connection.

Protocol Setup: For Modbus RTU applications, configure the RTU as a master or slave device and define register mappings for connected field devices. For IEC 60870-5-104 applications, assign ASDU addresses and configure spontaneous/cyclic data transmission modes. Test communication links using built-in diagnostic tools.

Acceptance Testing: Verify I/O functionality by applying test signals to input channels and monitoring output responses. Confirm SCADA communication by observing real-time data updates in the master station. Simulate communication failures to validate event buffering and automatic reconnection behavior.

Maintenance & Lifecycle Management

• Preventive Maintenance: Inspect terminal connections semi-annually; clean dust accumulation from ventilation openings
• Firmware Updates: Download latest RTU firmware from ABB support portal and install via System 800xA engineering tools
• Battery Replacement: Replace internal real-time clock battery every 5 years to maintain timestamp accuracy during power outages
• Spare Parts Strategy: Maintain spare GRBTU-01 units and critical S800 I/O modules for rapid replacement in high-availability systems
• Warranty Coverage: Standard 24-month manufacturer warranty covering defects in materials and workmanship
• Technical Support: Access ABB's global support network for application engineering, troubleshooting, and system optimization

Performance Advantages for System Integrators

• ✓ Protocol Versatility: Single RTU supports multiple industrial protocols, reducing spare parts inventory
• ✓ Scalable Architecture: Modular I/O expansion from 16 to 512 points without hardware redesign
• ✓ Proven Reliability: Field-proven design with MTBF exceeding 100,000 hours in harsh industrial environments
• ✓ Cybersecurity Ready: Supports encrypted communication and role-based access control for IEC 62351 compliance
• ✓ Cost-Effective Modernization: Enables phased migration from legacy RTUs to modern SCADA architectures

Standards Compliance & Certifications

The GRBTU-01 meets IEC 61131 programmable controller standards and IEC 61850 substation automation requirements. CE marking confirms compliance with European EMC and Low Voltage Directives, while UL and CSA certifications enable deployment in North American installations. The RTU's communication protocols adhere to IEEE, IEC, and industry-specific standards for interoperability.

Order Information

• Part Number: 3BSE013175R1 (GRBTU-01)
• Availability: In stock – ready for immediate shipment
• Lead Time: 3-5 business days (standard shipping)
• Package Contents: GRBTU-01 RTU, DIN rail mounting clips, terminal block labels, quick start guide
• Minimum Order Quantity: 1 unit
• Recommended Accessories: S800 I/O modules, communication cables, 24V DC power supply

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