ABB PFSA107-Z42 DTU Stressometer Digital Transmission Unit

ABB PFSA107-Z42 DTU Stressometer Digital Transmission Unit  

MEASUREMENT & ANALYTICS | PRODUCT GUIDE

Stressometer® Systems

Digital Transmission Unit PFSA107

01  Digital

Transmission

Unit (DTU)

02  Four measurements

per roll revolution.

To get the shortest

possible system response

time, while maintaining

accuracy, it is vital to

maximize the measure

ment density. For a roll

of 313 mm diameter,

the Stressometer can

measure up to 256

measurement points

per meter of strip.

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.

ABB’s Digital Transmission

Unit provides non-contact,

maintenance-free sensor

excitation and signal

transmission from the

Stressometer® flatness

measurement roll.

Measurement made easy

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

Properties

PFSA 107

Number of measurement

signals transmitted in

parallel

up to 80

Speed

Degree of protection

Type of bearing

SKF Lnmh

External signal connections

up to 4.000 rpm

IP 65

Hybrid deep groove ball bearing

>4.5 million hours

Power supply

Control signal cable

Optical fiber cable

Vibration tolerance

< 4.5 mm/s*