ABB TU831V1 3BSE013235R1 S800 I/O Extended MTU Module Termination Unit

Description

The TU831V1 is an Extended Module Termination Unit (MTU) engineered for the ABB S800 I/O system. It provides a reliable mechanical and electrical platform for interfacing field wiring with specified S800 I/O modules. Featuring a 2x8 signal terminal configuration, this extended unit breaks out field signals efficiently while establishing the necessary connections to the internal ModuleBus.

In contrast to low-voltage termination bases, this unit features an insulation rating up to 250V, making it suitable for standard process voltage networks, high-voltage discrete control loops, and specialized power signaling environments. It integrates smoothly into various generations of decentralized control networks, ensuring consistent signal path distribution without compromising field isolation.

Features

• Extended layout featuring 2x8 signal terminal connections
• Higher dielectric rating optimized for applications up to 250V
• Direct pass-through connectivity to the S800 ModuleBus interface
• Compact footprint optimizing available cabinet real estate
• Reliable wire-clamp termination points for direct field landing

Applications

• Distributed Control Systems (DCS) managed by ABB System 800xA platforms
• Legacy Advant OCS with Master or MOD 300 software via Advant Fieldbus 100
• Process loop terminations in high-density Compact Product Suite infrastructure
• 120V/240V AC or DC discrete control interfaces within power generation and water treatment facilities

Technical Specifications

Installation Guidelines

• Mounting Allocation: Affix the base securely to the designated section of the DIN rail, ensuring standard locking clips engage fully to prevent lateral sliding.
• Voltage Separation: Maintain proper clearance between high-voltage field wiring (up to 250V) routed to this unit and nearby low-voltage instrument signals to minimize electromagnetic coupling.
• Terminal Torque: Secure field conductors into the screw clamp or compression terminals using the manufacturer-specified torque limits to avoid loosening from vibration.
• Module Seating: Align the mating plug of the matching S800 I/O module vertically with the guide pins of the MTU before exerting downward force to sit the module securely.

FAQ

What does the designation "Extended MTU" indicate for this unit?

It indicates the presence of an expanded physical layout or additional terminal capacity, structured here as a 2x8 matrix, providing extra termination flexibility for specific I/O modules.

Is this termination unit safe for standard 230V AC applications?

Yes, the technical data sheet specifies a maximum insulation threshold of 250V, which accommodates standard 120V and 230V industrial control voltages.

Can this base unit be utilized within an Advant OCS architecture?

Yes, it is officially classified for use with Advant OCS with Master or MOD 300 software utilizing Advant Fieldbus 100 setups.

Does this component contain any substance of very high concern (SVHC)?

No, according to the official SCIP filing, there are no SVHC present in this hardware variant.

What is the physical weight of the unit without an I/O module attached?

The net engineering weight of the bare module termination unit is exactly 0.22 kg.