ABB PFSA107-Z42 DTU Stressometer Digital Transmission Unit

ABB’s Digital Transmission Unit provides non-contact,

maintenance-free sensor excitation and signal transmission

from the Stressometer® flatness measurement roll.

Measurement made easy

Digital Transmission Unit

The DTU is built to be completely insensitive to

tough mill environments. The main features are:

• Signal transmission over a non-contact capacitive

link. The link is not affected by the surrounding air

quality which could be the case with optical links.

• Sensor excitation using a non-contact rotating

transformer.

• Maintenance-free hybrid bearings are used to

ensure a long lifetime.

• All measurement signals are transmitted through

a fiber optic cable to the control cabinet.

Direct and parallel measurement

It is important that all measurement points are

processed in parallel, i.e. at the same time.

This means that strip tension variations will

influence all measurement points in the same

way and thus will not influence the actual flatness

measurement.

Main features

• Most Machine Safety functions inclusive speed monitoring and analog input monitoring

• Advanced programming possibilities

• Ladder and TÜV approved function blocks

• PL e/SIL 3

Pluto is a cost effective, powerful and compact safety PLC for all

machine safety applications. Most safety devices on the market

can be connected directly to Pluto and multiple safety sensors

can be connected to a single input and still achieve the highest

safety level. Programming is done easily in the accompanying

software Pluto Manager.

Pluto is available in different models; simple models for smaller

systems and models with bus communication for larger systems.

Models with analogue inputs are available as well.

Before beginning, some basic checklist items

All information regarding the control of your application

should be gathered from the ACH550 prior to selecting and

performing the actual replacement, control and parameter

settings should be noted to ensure consistency in the

replacement ACH580.

This checklist covers the main information you may require to

guide you through the replacement process. If the ACH550

cannot be powered, the technician should gather all the

information below that is not parameter related.

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