1. System overview CPX-FVDA-P2
1-22
Festo P.BE-CPX-FVDA-P2-EN en 1209NH English
1.3
Mode of operation of the output module
The switches of the output channels are controlled by differ-
ent processors in accordance with the safety concept. For this
purpose, the output module is equipped with 2 processors
that monitor each other constantly and check for switching
capability and can monitor the output channels for short cir-
cuits and cross circuits (
Fig. 1/1).
Each high-side path (P, 24 V current path) of an output chan-
nel is coupled with a current measurement facility. This is
able to measure current from about 50 mA and detect load
and short-circuit current.
The design of the entire module ensures that the output
channels are also switched off in case of error, such as:
–
overvoltage, undervoltage, overload, short circuit and
cross circuit
–
Failure or malfunction of communication via PROFIsafe
–
Failure or defect of individual safety-determining compon-
ents of the module.
Note
If a load is operated with own dynamics that are constantly
high (e.g. rapidly switching valves), the diagnostic function
cannot be carried out completely. In this case, the output
channel is switched off for safety.
•
Make sure that a load is operated with sufficiently low
own dynamics at the output channel involved.
Summary of Contents for 1971599
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Page 75: ...Installation 2 1 Festo P BE CPX FVDA P2 EN en 1209NH English Chapter 2 Installation...
Page 91: ...Commissioning 3 1 Festo P BE CPX FVDA P2 EN en 1209NH English Chapter 3 Commissioning...
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Page 113: ...Operation 4 1 Festo P BE CPX FVDA P2 EN en 1209NH English Chapter 4 Operation...
Page 143: ...Index B 1 Festo P BE CPX FVDA P2 EN en 1209NH English Appendix B Index...
Page 144: ...B Index B 2 Festo P BE CPX FVDA P2 EN en 1209NH English Table of contents B Index B 1...
Page 150: ...B Index B 8 Festo P BE CPX FVDA P2 EN en 1209NH English W Wire break 3 12 5 4...