Siemens Two-Way Radio SIMATIC PCS 7 Bedienungsanleitung PDF herunterladen (Seite 26)

Monitoring and diagnostics26

Using the example of a mixer drive, the maintenance with

Drive ES PCS 7 is represented: In time, the material to be mixed

starts setting in the agitator. Until now, the agitator was clea-

ned at planned, regular intervals to guarantee its availability.

With the aid of new functions in the Maintenance Station, the

cleaning can in future be performed as and when required.

The frequency converter offers the option of load torque mo-

nitoring and the type of reaction when the limit is exceeded.

Within the load limits, the mixer works without any problem.

With regard to the mixer, it is known that the degree of pollu-

tion has an indirect effect on the torque characteristics of the

frequency converter. On exceeding the limit, an alarm is re-

ported to the controller.

From this alarm of the converter, Drive ES PCS 7 generates a

corresponding maintenance display for the Maintenance Sta-

tion. Now the cleaning of the mixer can be performed on the

basis of need.

Additionally it is possible to record the frequency of cleaning

demands and to deduce process optimizations or anticipatory

maintenance scenarios.

Thus, maintenance can as well be optimized for moving de-

vices and availability and efficiency of the plant can be increa-

sed.

Schematic flow of information using example of a mixer drive

Maintenance

Station

e.g. initiate cleaning

of the mixer

Load torque monitoring

This gives an idea of, for

instance,

the degree of pollution

of the mixer

Drive ES PCS 7

Message to

Maintenance Station

Mixer drive

generates signal

in case of

limit violation

G_ST80_XX_00417

PROFIBUS

Industrial Ethernet

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