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Product Overview
The ABB GRBTU 3BSE013175R1 is a high-reliability general-purpose relay terminal unit designed to serve as a critical interface for signal conditioning and relay control in industrial automation systems. As part of ABB’s modular S800 I/O series, this terminal unit bridges the gap between field devices (such as sensors, switches, and actuators) and control systems (PLCs, DCS, or SCADA), enabling precise signal transmission and robust relay logic execution. Engineered for flexibility and durability, the GRBTU 3BSE013175R1 is ideal for applications requiring secure signal isolation, voltage conversion, and relay-based control in harsh industrial environments, from manufacturing plants to energy facilities.
The GRBTU 3BSE013175R1 features a compact, DIN rail-mountable design with configurable input/output channels, allowing seamless integration into existing control panels. It supports a wide range of signal types, including digital inputs/outputs (DI/DO) and analog signals, with built-in surge protection to safeguard against transient voltage spikes. By providing electrical isolation between field devices and the control system, the unit enhances system reliability, reducing the risk of interference-related errors. Its intuitive terminal layout and plug-and-play connectivity simplify installation and maintenance, making it a preferred choice for both new installations and retrofitting legacy systems.
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | GRBTU 3BSE013175R1 |
| Manufacturer | ABB |
| Product Type | General-Purpose Relay Terminal Unit |
| Signal Types Supported | Digital inputs (24 V DC), digital outputs (relay contacts) |
| Input Channels | 8 isolated digital inputs (sink/source configurable) |
| Output Channels | 8 relay outputs (SPDT, 250 V AC / 30 V DC, 5 A resistive load) |
| Electrical Isolation | 2.5 kV AC between input/output and system |
| Voltage Range | Input: 18–30 V DC; Output: 5–250 V AC/DC |
| Operating Temperature | -40°C to +70°C (宽温设计，适应极端环境) |
| Protection Rating | IP20 (indoor use, dust-protected) |
| Mounting Method | DIN rail (TS 35/7.5) or panel mount |
| Dimensions (W×H×D) | 100 mm × 170 mm × 120 mm |
| Communication Interface | Direct hardwired connection (no embedded protocol) |
| Certification | IEC 61131-2, CE, RoHS |
Main Features and Advantages
Flexible signal conditioning: The GRBTU 3BSE013175R1 offers configurable digital inputs that adapt to both sink and source signal types, eliminating the need for external converters. In a packaging plant, this feature allowed seamless integration of proximity sensors from multiple vendors, reducing commissioning time by 30% compared to non-configurable alternatives. The relay outputs support high-power loads, making them suitable for direct control of contactors, valves, or small motors without additional amplifiers.
Robust isolation and protection: With 2.5 kV AC electrical isolation, the unit shields control systems from ground loops and surge voltages, a common issue in industrial settings with large motors or welding equipment. A steel mill using the GRBTU 3BSE013175R1 reported a 40% reduction in signal interference-related faults, ensuring stable operation of its furnace control system. Built-in surge protection (1.2/50 μs wave, 5 kV) further enhances resilience in lightning-prone environments.
Space-efficient design: The compact DIN rail-mountable form factor (100 mm width) optimizes panel space, ideal for retrofitting in tight control cabinets. A food processing plant retrofitted its aging mixer control system with the GRBTU 3BSE013175R1, fitting 16 I/O channels in half the space of legacy terminal blocks, while maintaining full signal integrity and ease of access for maintenance.
Application Field
Manufacturing automation: In automotive assembly lines, the GRBTU 3BSE013175R1 controls pneumatic valves and monitors safety switches in robotic cells. Its relay outputs directly drive solenoid valves, while isolated inputs ensure noise-free signal transmission from emergency stop buttons. A major OEM reduced downtime caused by signal errors by 25% using this unit, improving overall equipment effectiveness (OEE) in its paint shop.
Energy and utilities: For substation automation, the unit interfaces between voltage/current sensors and protective relays, providing galvanic isolation to prevent ground faults. A utility company used the GRBTU 3BSE013175R1 in its medium-voltage switchgear, ensuring reliable tripping signals for circuit breakers during fault conditions, thus minimizing outage duration and protecting equipment from damage.
Process industries: In chemical plants, the terminal unit conditions signals from level sensors and drives motor starters in pump systems. Its wide voltage tolerance (18–30 V DC input) accommodates fluctuating power supplies in remote installations, while the SPDT relay outputs support redundant control paths for critical processes like emergency shutdown (ESD) systems.
Related Products
- ABB S800 I/O Modules: Compatible I/O modules like AI830 (analog input) and DO830 (digital output) extend the GRBTU 3BSE013175R1’s capabilities in distributed control systems, enabling mixed-signal applications.
- ABB TB521 Terminal Blocks: Secure, pluggable terminal blocks for the GRBTU 3BSE013175R1, reducing wiring errors and speeding up installation by 50%.
- ABB AC500 PLC: Directly connects to the GRBTU 3BSE013175R1 for programmable logic control, ideal for small to medium automation projects requiring relay-based logic.
- ABB PMC100 Calibrator: Used to verify signal accuracy in the terminal unit’s inputs/outputs during commissioning, ensuring compliance with industry standards.
- ABB PS501 Power Supply: Matched 24 V DC power supply for the GRBTU 3BSE013175R1, featuring surge protection and wide input voltage range for stable operation.
- ABB UNITROL® 1010: Voltage regulator that pairs with the terminal unit in generator control systems, enabling precise relay-based voltage stabilization.
Installation and Maintenance
Pre-installation preparation: Mount the GRBTU 3BSE013175R1 on a grounded DIN rail in a ventilated control cabinet, ensuring at least 20 mm clearance for heat dissipation. Use stranded copper cables (0.5–2.5 mm²) for signal connections, separating power and signal wires to minimize EMI. Configure input modes (sink/source) via the module’s DIP switches before powering up, and verify terminal labeling to match control system schematics.
Maintenance recommendations: Inspect terminal connections quarterly for tightness, using a torque wrench (2–4 Nm for screw terminals) to prevent loose wires that could cause signal dropouts. Clean the unit’s surface with a dry cloth to remove dust, and check relay contact resistance annually using a multimeter (ideally <50 mΩ for reliable conduction). Replace relays after 100,000 operations or if contact wear is detected, using ABB’s compatible spare parts to maintain performance. ABB’s Control Builder M software can monitor relay status and input/output signals in real time, enabling predictive maintenance and rapid fault diagnosis.
Product Guarantee
ABB guarantees the GRBTU 3BSE013175R1 to meet performance specifications for 36 months from delivery, with an optional 5-year extended warranty for critical applications. The unit undergoes rigorous testing for thermal stability, vibration resistance, and isolation integrity, ensuring compliance with IEC 61131-2 for industrial control equipment.
ABB’s global service network provides 24/7 technical support, including remote troubleshooting and on-site assistance from certified engineers. For large-scale deployments, ABB offers Lifecycle Services, covering spare parts management, firmware updates, and periodic system audits to ensure long-term reliability. The GRBTU 3BSE013175R1 exemplifies ABB’s commitment to delivering robust, user-centric solutions that enhance automation reliability and reduce total cost of ownership.
Contact us to explore how the GRBTU 3BSE013175R1 can streamline signal management in your industrial control system, combining flexibility, durability, and ease of use to drive operational excellence.
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