Brochure

References56

SIMATIC ET 200pro with Safety Integrated and PROFINET

Volkswagen Nutzfahrzeuge, Germany –

Vibrating roller test bed

Requirements

Volkswagen Nutzfahrzeuge (VWN), an autonomous brand of

the Volkswagen corporation has installed the final noise test

in the transporter works in Hanover in the workshop hall. Now

the commercial vehicle business is operating a vibrating roller

test bed in its works in Hanover in cooperation with the "Auto-

mation Initiative of the German Automotive Industry" (AIDA).

The customer's requirements were extensive: The vibrating

roller test bed had to be linked into the existing network struc-

ture (PROFINET); fail-safe communication was just as impor-

tant as a reduction in training costs. The use of distributed I/O

was also demanded.

Solution

The distributed I/O had to be installed in the support structure

of the test bed, in a compact space, close to the vibration

dampers. Therefore the only solution was a cabinet-free solu-

tion of extremely high ruggedness and industrial compatibili-

ty, which is why SIMATIC ET 200pro was used.

An S7-400F controller was used which ensured fail-safe com-

munication over PROFINET. Apart from the cabinet-free

SIMATIC ET 200pro, the SIMATIC ET 200S – which was in-

stalled in the control cabinet alongside the controller – was

also used as distributed I/O. Both distributed I/O systems are in

a standard but fail-safe configuration. A PROFINET-capable

SCALANCE X208pro switch with IP65 degree of protection dis-

tributes incoming and outgoing data.

Benefits

Use of SIMATIC ET 200pro resulted in a number of advantages:

Costs were saved thanks to standardization and optimization

of the spare parts inventory. The reduction in training costs for

maintenance and service personnel was also satisfied. Due to

the ability to replace electronic modules during operation (hot

swapping), high availability was achieved for the plant. There

was also a reduction in the installation and wiring costs for the

safety-related part of the plant.

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