Description

ABB TU831V1 3BSE013235R1 Extended Module Termination Unit

Configured for field I/O termination and ModuleBus distribution in the ABB S800 I/O system, the ABB TU831V1 3BSE013235R1 (TU831V1 Extended Module Termination Unit) provides physical connections for up to 8 I/O channels. The unit distributes ModuleBus signals to the I/O module and the next MTU while generating the required module address position signals.

Hardware Specifications

Parameter	Specification
Model	TU831V1 3BSE013235R1
Spare Model	3BSE013235R1
Brand	ABB
Product Type	Extended Module Termination Unit
Series	S800 I/O
Origin	Sweden
Weight	0.2 kg
Dimensions	Estimated shipping size: 12.7 x 11.6 x 6.6 cm
Connection	Terminal block
Channels	8 I/O channels
Maximum Rated Voltage	250 V
Maximum Current per I/O Channel	3 A
Process Connections	16 connections for up to 8 I/O channels
I/O Configuration	Single I/O
Mounting	Standard DIN rail; mounting in both directions
Dielectric Test Voltage	2000 V AC
Operating Temp	0 to +55 deg C; approvals issued for +5 to +55 deg C
Storage Temp	-40 to +70 deg C
Relative Humidity	5 to 95 %, non-condensing

ABB S800 I/O ModuleBus and I/O Density

The TU831V1 distributes the ModuleBus connection between the installed I/O module and the adjacent MTU. It also shifts outgoing position signals to generate the correct address for the next I/O position.

Furthermore, the MTU provides 16 process connections for 8 I/O channels. Each channel supports a maximum rated current of 3 A and a maximum rated voltage of 250 V.

The single I/O configuration does not provide redundant I/O termination. Therefore, system designers should match the MTU configuration with the selected S800 I/O module and field wiring arrangement.

Frequently Asked Questions

Q: How many I/O channels can the TU831V1 support?
A: The TU831V1 supports up to 8 I/O channels with 16 process connections.

Q: What electrical rating applies to each I/O channel?
A: Each I/O channel has a maximum rated voltage of 250 V and a maximum current of 3 A.

Q: Does the TU831V1 provide redundant I/O termination?
A: No. The supplied specifications identify the TU831V1 as a single I/O termination unit.

Field Installation Guidelines

• Mount the TU831V1 on a compatible DIN rail and secure the mechanical latch before wiring.
• Install the MTU in the specified mounting orientation and maintain adequate clearance for terminal access.
• Verify the installed I/O module compatibility with the TU831V1 before applying field power.
• Route field wiring separately from high-current switching conductors where practical to reduce electrical interference.
• Use appropriate terminal wiring practices and verify conductor sizes against the connected field circuit requirements.
• Confirm polarity and circuit voltage before connecting field devices to the terminal block.
• Inspect terminal connections for secure mechanical engagement before energizing the I/O assembly.
• Maintain the specified operating temperature range of 0 to +55 deg C and relative humidity range of 5 to 95 %, non-condensing.
• Observe the 250 V maximum rated voltage and 3 A maximum current per I/O channel during system design.
• Verify dielectric isolation requirements before performing commissioning or insulation testing.

Specifications

• Brand: ABB

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems