VOFA−...
Festo VOFA−... 1004NH English
66
8
Eliminating malfunctions
If an error or failure is recognised, a check must be made whether this is based on
external or internal influences so that corresponding measures for remedying the
malfunction can be introduced.
Check for correct switching characteristics of the control block
during commissioning or after repair/elimination of malfunctions
after interruption of the signal lines of the proximity sensors
after interruption of the signal lines of the solenoid coils
Check external influences
To exclude external influences that can cause an error message, do the following:
1. Check the compressed air supply and adjust it to the technical data
(e.g.pressure level/filtration, see chap.13).
2. Check the power supply and adjust it to the technical data (see chap.13).
3. Check the overall installation
(solenoidcoilcontrolandproximitysensors,seechap.5)
Check internal influences
To exclude internal influences, do the following:
1. Carry out a performance test (see chap.7).
2. If necessary, replace one or both solenoid valves (see chap.11) if these were
recognised as defective and carry out the performance test again.
3. Replace the complete control block if the malfunction continues.
Summary of Contents for VOFA-B26-T52-M Series
Page 26: ...VOFA Festo VOFA 1004NH Deutsch 26 Bild 11 Funktionstest Schritte 1 bis 4...
Page 27: ...VOFA Festo VOFA 1004NH Deutsch 27 Bild 12 Funktionstest Schritte 5 bis 7...
Page 64: ...VOFA Festo VOFA 1004NH English 64 Fig 11 Function test steps 1 to 4...
Page 65: ...VOFA Festo VOFA 1004NH English 65 Fig 12 Function test steps 5 to 7...
