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TU833V1 3BSE038726R1 Expansion Module Termination Unit

1. Product Title

TU833V1 3BSE038726R1 Expansion Module Termination Unit (Dedicated for Industrial Control System Expansion Module Signal Termination & Distribution)

2. Product Data

The TU833V1 3BSE038726R1 is an industrial-grade expansion module termination unit, specifically designed for signal termination, distribution, and impedance matching of expansion modules in ABB industrial control systems (e.g., AC 800M, AC 500 series). It supports mainstream industrial bus protocols (Profibus, Modbus, Ethernet/IP) and enables stable signal transmission between up to 8 expansion modules, with a maximum signal transmission distance of 20 meters and a transmission rate of up to 100Mbps. By eliminating signal reflection and crosstalk, it ensures data integrity in multi-module expansion networks, making it widely applicable in automation control cabinets, production line expansion systems, and process control expansion loops.

3. Product Description

This termination unit features a modular design with 8 dedicated signal termination ports and 1 bus input port, allowing flexible connection of multiple expansion modules without additional adapters. It integrates precision matching resistors (120Ω ±1% for Profibus, 75Ω ±1% for Ethernet) to suppress signal reflection at the end of the bus. The housing is made of flame-retardant ABS material (compliant with UL94 V-0) and includes a tinned copper shielding layer to resist electromagnetic interference (EMI) in industrial environments. It supports 35mm standard DIN rail mounting for space-efficient installation in control cabinets, and operates stably within a temperature range of -25℃~+60℃. Equipped with LED status indicators (power, bus connection, module signal), it provides real-time feedback on operating conditions for quick fault diagnosis. Additionally, it has overload protection for the bus circuit to prevent damage from abnormal current.

4. Detailed Parameters

Parameter Category	English Parameters
Core Function	Expansion module signal termination, distribution, impedance matching
Compatible Protocols	Profibus, Modbus, Ethernet/IP
Number of Ports	1 bus input port, 8 expansion module termination ports
Matching Resistor Value	120Ω ±1% (Profibus/Modbus), 75Ω ±1% (Ethernet/IP)
Maximum Transmission Distance	20 Meters
Transmission Rate	Up to 100Mbps
Operating Voltage	24V DC (±10% tolerance)
Power Consumption	≤3W
Operating Temperature	-25℃~+60℃
Protection Class	IP20 (unit body)
Housing Material	Flame-retardant ABS (UL94 V-0)
Shielding Performance	Tinned copper layer (EMI-resistant)
Installation Method	35mm standard DIN rail mounting
Status Indication	3 LEDs (Power: Green; Bus Connection: Blue; Module Signal: Amber)
Dimensions (L×W×H)	95mm×65mm×30mm (typical)

5. Advantages & Features

① Multi-Module Compatibility: Supports up to 8 expansion modules, simplifying multi-module expansion networks; ② Effective Signal Optimization: Precision matching resistors eliminate reflection and crosstalk, ensuring data integrity; ③ Strong Anti-Interference: Tinned copper shielding blocks industrial EMI, suitable for noisy environments; ④ Space-Saving Design: DIN rail mounting and compact size fit easily in control cabinets; ⑤ Intuitive Monitoring: LED indicators enable real-time status checks and rapid troubleshooting.

6. Application Fields

① ABB Control System Expansion: Signal termination for AC 800M/AC 500 expansion modules; ② Smart Manufacturing: Multi-module expansion network termination in production line control systems; ③ Energy Industry: Expansion module signal distribution in wind farm/photovoltaic inverter control systems; ④ Process Industry: Termination unit for chemical/metallurgical automation expansion loops; ⑤ Infrastructure: Expansion module signal management in water treatment/smart grid control cabinets.

7. Precautions

① Confirm compatibility with the expansion module model and bus protocol before installation; ② Install only at the end node of the expansion module network (avoid middle-node installation to prevent signal distortion); ③ Ensure the operating voltage (24V DC) matches the system power supply to avoid unit damage; ④ Avoid installation near strong magnetic field sources (e.g., large motors, frequency converters) to prevent EMI-induced malfunctions; ⑤ Regularly check port connections and LED status—loose ports may cause intermittent signal loss; ⑥ Do not expose to corrosive gases/liquids to prevent housing and internal component degradation

The structure and details of the product：

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TU833V1 3BSE038726R1 Expansion Module Termination Unit

TU833V1 3BSE038726R1 Expansion Module Termination Unit

1. Product Title

2. Product Data

3. Product Description

4. Detailed Parameters

5. Advantages & Features

6. Application Fields

7. Precautions

ABB

TU833V1 3BSE038726R1

PLC modules

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