4. Commissioning
4−5
Festo P.BE−MPA−EN en 0802c
The pilot air must reach a pressure of 3
Ū
8 bar as soon as it
is switched on, Otherwise, there is no guarantee that the
valve will switch directly (see diagram).
If the pressure is less than 3 bar, there may be a delay before
the valve is switched, in spite of an electric signal being pres
ent. The slow increase in pressure of the complete supply
does not then affect the actuator. The actuator would react
suddenly (e.g. a cylinder would extend or retract suddenly,
depending on the valve function).
1
4
2
5 3
14
12
1
2
1
12/14
12/14
3
82/84
2
1
Externally supplied pilot air (3 to 8 bar), branched in
front of the safety start−up valve
2
Safety start−up valve (slow build up of pressure of
complete supply)
Fig.4/1:
Example of valve−cylinder combination with slow
increase in pressure of the complete supply
Summary of Contents for MPA-ASI Series
Page 2: ......
Page 4: ...Contents and general instructions II Festo P BE MPA EN en 0802c...
Page 8: ...Contents and general instructions VI Festo P BE MPA EN en 0802c...
Page 18: ...Contents and general instructions XVI Festo P BE MPA EN en 0802c...
Page 19: ...Summary of components 1 1 Festo P BE MPA EN en 0802c Chapter 1...
Page 55: ...Fitting 2 1 Festo P BE MPA EN en 0802c Chapter 2...
Page 71: ...Installation 3 1 Festo P BE MPA EN en 0802c Chapter 3...
Page 106: ...3 Installation 3 36 Festo P BE MPA EN en 0802c...
Page 107: ...Commissioning 4 1 Festo P BE MPA EN en 0802c Chapter 4...
Page 128: ...4 Commissioning 4 22 Festo P BE MPA EN en 0802c...
Page 129: ...Maintenance and conversion 5 1 Festo P BE MPA EN en 0802c Chapter 5...
Page 169: ...Technical appendix A 1 Festo P BE MPA EN en 0802c Appendix A...
Page 186: ...A Technical appendix A 18 Festo P BE MPA EN en 0802c...
Page 187: ...Supplementary component summary B 1 Festo P BE MPA EN en 0802c Appendix B...
Page 201: ...Index C 1 Festo P BE MPA EN en 0802c Appendix C...
Page 202: ...C Index C 2 Festo P BE MPA EN en 0802c Contents C Index C 1...
