Month: March 2026

The TU811V1 is a 8 channel 250 V compact module termination unit (MTU) for the S800 I/O.

The MTU is a passive unit used for connection of the field wiring to the I/O modules.

It also contains a part of the ModuleBus.

The MTU distributes the ModuleBus to the I/O module and to the next MTU.

It also generates the correct address to the I/O module by shifting the outgoing position signals to the next MTU.

Two mechanical keys are used to configure the MTU for different types of I/O modules.

This is only a mechanical configuration and it does not affect the functionality of the MTU or the I/O module.

Each key has six positions, which gives a total number of 36 different configurations.

Features and benefits

• Compact installation of I/O modules.

• Up to 8 isolated channels of field signals.

• Connections to ModuleBus and I/O modules.

• Mechanical keying prevents insertion of the wrong I/O module.

• Latching device to DIN rail for grounding.

• DIN rail mounting.

The TU805K01 is a kit consisting of 10 pcs TU805. TU805 is a 16-

channel 50 V terminal unit for the S800 I/O modules DI801 and

DO801. The Terminal Unit is a passive unit for the distribution of

external process power.

Features and benefits

• Enables 2- and 3-wire connections of process signals.

• Direct mounting on the I/O module.

• Requires no extra space.

The TU805K01 is a kit consisting of 10 pcs TU805. TU805 is a 16-

channel 50 V terminal unit for the S800 I/O modules DI801 and

DO801. The Terminal Unit is a passive unit for the distribution of

external process power.

Features and benefits

• Enables 2- and 3-wire connections of process signals.

• Direct mounting on the I/O module.

• Requires no extra space.

Product and part life cycle report (annual)

The Product Life Cycle annual report is a summary of the

excitation system parts availability and life cycle status. It will

also detail which new material can replace the obsolete ones and

if a mechanical adaptation is needed.

Control upgrade solution (preferential price)

ABB has designed a front-end control upgrade solution using the

latest excitation technology, the UNITROL 6000. for excitation

systems in the Limited or Obsolete phase. It is an efficient

solution that extends the life of the system and brings it to the

Active phase of the Product Life Cycle.

Performance review (preferential price)

The ABB performance review program is designed to ensure

the proper and safe operation of all your UNITROL excitation

products. We accomplish this by running tests on all critical

protection devices and system settings in various operating

conditions. We then prepare a report based on the findings, and

make recommendations on how to keep unplanned downtime at

a minimum.

Spare parts health and functional check (on-site)

The spare parts critical to commercial operation (noble parts;

ex.: boards, power supply), will be installed directly on the

existing excitation system and the functionality of all parts will

be confirmed. This will require the excitation system and the

machine to be available for testing.

Spare parts health and functional check (at the factory)

Upon request, the health and functional check may be performed in

our factory. The spare parts must be carefully packed and shipped

to ABB. Once they arrive, they will be inspected and tested at our

supplier factory in order verify their correct functionality. We

recommend that spare part boards (PCB) containing electrolytic

capacitors should be tested every four years.

Parts Fingerprint

The Parts Fingerprint provides you with a complimentary

recommended spare parts list or, if a detailed list of the spare

parts is provided, a list of the recommended parts that are

missing can be prepared. This can be done, for example, as part

of a performance review. We will also keep you informed about

critical aging processes of vital components.

On-site troubleshooting dispatch prioritization

The ABB service hotline team will trigger an internal dispatch alert

and escalation process, immediately upon receiving customer’s

confirmation to dispatch a service engineer to site. The support

line will transfer all information and technical documentation

available for the service to the assigned service engineer.

Annual support usage report (available on demand)

ABB will provide an annual usage report on demand. This will

summarize all support activities provided during the Excitation

Care Program for a period of 12 months.

On-site critical spare parts assessment

The on-site critical spare parts assessment is designed to gather

all necessary information such as software and hardware version,

ABB reference number and quantity of the available spare parts

on-site directly from the customer site. It will then be compiled

in a detailed list by our specialist and provided to the customer

contact person.

Excitation Care provides peace of mind and reassurance to your maintenance team. 

They will know who to call in case of emergency, theterms and conditions

of sale will be defined in advance; therefore, your maintenance team will 

only focus on getting the best performance from your excitation systems.

Product Life Cycle notification (annual)

ABB will advise where the excitation systems are in the product

life cycle: Active, Classic, Limited or Obsolete. Customers will

receive recommendations depending on the status of the system.

It is a proactive approach to keep customers informed and to help

them plan excitation maintenance services efficiently.

Unlimited phone support

Technical phone support will be provided by the local support

center. During normal business hours (excluding holidays).

Technical support is also available for emergency cases, 24/7/365.