piab piCOMPACT 23 SMART Manuel D'installation page 14

Installation
4.2.2 Amplified blow-off (ABO)
Without
non-return
valve
With
non-return
valve
Figure 4 Compressed air, 2. Vacuum, 3. Exhaust.
*Also the "fail safe" version (power off – NO), in
running mode the vacuum valve behaves like a NC
valve but if power is lost the valve goes into NO
mode leaving compressed air for continuous vacuum.
Page 14/28
Vacuum NC
& Blow-off NC
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piCOMPACT 23 SMART IO-Link 3-4 channel
®
Vacuum NO
& Blow-off NC
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Manual