5 General Description of Functions
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5.11 Signal Type
The signal type, or the ejector switching behavior (PNP or NPN) of the electrical signal inputs and the sig-
nal output, is permanently set on the device and is therefore dependent on the ejector version.
5.12 Control Concept for NO Ejectors
1
1
0
0
“Suction” [IN1]
“Blow off” [IN2]
“Blow off” state
“Suction” state
-p
p
0 bar
0 bar
5.13 Control Concept for NC Ejectors
1
1
0
0
“Suction” [IN1]
“Blow off” [IN2]
“Blow off” state
“Suction” state
-p
p
0 bar
0 bar
5.14 Vacuum unit
The vacuum level in the LED bar is shown as a percentage of the maximum possible vacuum.
If the vacuum is outside the permitted range, the LED next to this bar flashes rapidly. That means the LED
flashes “10%” when overpressure is applied.
