ABB TU840

Description

Detailed Parameter Table

ABB TU840

Product introduction

The TU840 is a high-performance terminal unit developed by ABB, specifically designed to serve as a reliable interface between field devices and the S800 I/O modules in industrial automation systems. It acts as a crucial junction point, facilitating secure and organized wiring connections, which is essential for maintaining the integrity of signal and power transmission in complex industrial environments.

This terminal unit is fully compatible with ABB’s AC800M controller and S800 I/O modules, such as the AI810 3BSE008516R0001 analog input module and DO524 A3 1SAP240700R0001 digital output module. The TU840 features a plug-in design that allows for quick and easy replacement of I/O modules without disrupting the entire wiring system, significantly reducing downtime during maintenance or upgrades.

Constructed with durable materials, the TU840 can withstand the harsh conditions of industrial settings, including temperature fluctuations and vibrations. Its spring-clamp terminals ensure consistent and secure connections, preventing signal loss and ensuring the reliable operation of the entire automation system. Whether in manufacturing plants, power generation facilities, or process control systems, the TU840 plays a vital role in simplifying wiring complexity and enhancing system efficiency.

Core advantages and technical highlights

Quick and easy installation

The TU840‘s plug-in design eliminates the need for time-consuming hardwiring when replacing I/O modules. This feature is particularly beneficial in large-scale industrial facilities where minimizing downtime is critical. For example, in an automotive production line, if a DO524 A3 1SAP240700R0001 digital output module needs replacement, the TU840 allows technicians to simply unplug the faulty module and insert a new one, reducing maintenance time by up to 70% compared to traditional terminal blocks like the V17111-110.

Secure and vibration-resistant connections

Equipped with spring-clamp terminals, the TU840 provides a tight and consistent grip on wires, even in high-vibration environments such as near heavy machinery or pumps. This ensures stable signal transmission between field sensors and the AI810 3BSE008516R0001 analog input module, avoiding intermittent data errors that could lead to process disruptions. In a chemical processing plant, where precise measurement of pressure and temperature is crucial, this reliability is paramount to maintaining product quality and safety.

Enhanced system organization

The TU840 features a well-organized layout with clearly labeled terminals, making it easy for technicians to identify and trace wires during installation, troubleshooting, or upgrades. This organized structure reduces the risk of wiring errors, which can be costly and time-consuming to rectify. Additionally, the terminal unit’s compact design helps maximize space utilization in control cabinets, allowing for more efficient placement of other components like the 3BHE009017R0102 power supply module.

ABB TU840

Typical application scenarios

In a large-scale water treatment plant, the TU840 is extensively used in the control cabinets of the filtration and pumping systems. It serves as the terminal unit for connecting various field devices, such as flow meters, pressure sensors, and valve actuators, to the S800 I/O modules. For instance, the wires from pressure sensors monitoring the filtration tanks are connected to the TU840, which then links to the AI810 3BSE008516R0001 analog input module, enabling the AC800M controller to monitor and adjust the filtration process in real time.

The TU840‘s plug-in design proves invaluable during scheduled maintenance. When a DO524 A3 1SAP240700R0001 digital output module controlling the pump valves needs inspection, technicians can quickly disconnect it from the TU840 without having to rewire, significantly reducing the time the system is offline. The spring-clamp terminals ensure that after reconnection, the wires remain securely in place, maintaining the integrity of the control signals even as the pumps generate vibrations during operation.

Moreover, the TU840‘s compliance with industry standards ensures it can operate reliably in the water treatment plant’s environment, where temperature and humidity levels can vary. Its diagnostic LEDs provide immediate visual feedback, allowing technicians to quickly identify any connection issues, further minimizing downtime and ensuring the continuous and efficient operation of the water treatment process.

Related model recommendations

• TU841: A variant of the TU840with 16 terminals, suitable for smaller-scale applications requiring fewer connections than the TU840.
• TU845: A terminal unit with enhanced protection features, designed for use in more demanding industrial environments compared to the TU840.
• AI810 3BSE008516R0001: An analog input module that connects to the TU840to receive and process signals from field sensors.
• DO524 A3 1SAP240700R0001: A digital output module that interfaces with the TU840to control actuators and other field devices.
• V17111-110: A screw-clamp terminal block that can be used alongside the TU840in areas where additional wiring connections are needed.
• TB820V2 3BSE013208R1: A terminal base that works in conjunction with the TU840to provide a comprehensive wiring solution for S800 I/O modules.
• 3BHE009017R0102: A power supply module that provides stable power to the TU840and connected I/O modules, ensuring reliable operation.

Installation, commissioning and maintenance instructions

Installation preparation

Before installing the TU840, ensure the control cabinet is clean, dry, and free from any debris that could interfere with the unit’s operation. The ambient temperature should be within the range of -25°C to +70°C, and the relative humidity should not exceed 95% (non-condensing). Required tools include a screwdriver, wire strippers, and a torque wrench set to the appropriate specifications for the terminal connections.

Mount the TU840 on a 35 mm DIN rail, ensuring it is securely fastened and level. Leave at least 15 mm of space around the unit to allow for proper ventilation and easy access during wiring and maintenance. Before connecting wires, verify that the power to the entire system is turned off to prevent electrical hazards. Use wires within the specified size range (0.5 mm² – 2.5 mm²) and strip the wire ends to the correct length (approximately 8 mm) for proper insertion into the spring-clamp terminals.

Maintenance suggestions

For daily maintenance of the TU840, visually inspect the unit for any signs of damage, such as cracked housing or loose connections. Check the LED indicators regularly to ensure they are functioning correctly, with the power LED illuminated and no error LEDs lit. Inspect the wiring connections monthly to ensure they are secure and that the wires are not frayed or damaged.

If a connection issue is detected, use a screwdriver to release the spring-clamp terminal, remove the wire, and inspect it for damage. Clean the terminal with a dry cloth if necessary before reinserting the wire and securing it properly. When replacing the TU840 or any connected modules, always use genuine ABB parts to maintain compatibility and system integrity. In corrosive environments, inspect the unit more frequently for signs of corrosion and take appropriate measures to protect it, such as applying a protective coating.

Service and guarantee commitment

The TU840 is backed by ABB’s 3-year warranty, which covers defects in materials and workmanship under normal operating conditions. This warranty demonstrates ABB’s confidence in the quality and durability of the TU840, ensuring customers can rely on its performance in their industrial automation systems.

ABB’s technical support team is available 24/7 to provide assistance with the installation, commissioning, and troubleshooting of the TU840. Our experts can offer guidance on proper wiring techniques, compatibility with other ABB components, and any other questions related to the unit’s operation. We also provide comprehensive documentation, including user manuals and installation guides, to help customers get the most out of their TU840.

In the event of a warranty claim, ABB is committed to providing prompt replacement or repair of the TU840 to minimize downtime for our customers. Our global network of service centers ensures that support is readily available, no matter where the unit is installed. ABB’s dedication to customer satisfaction and product quality makes the TU840 a reliable choice for industrial automation applications.