7 Installation
EN-US · 30.30.00.00422 · 08 · 09/22
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7.5 Process Data
During operation of the ejector, all input and output signals are connected to a controller, either directly
or using intelligent terminal boxes.
For this purpose, not only the supply voltage but also two input signals and one output signal should be
connected to allow the ejector to communicate with the controller.
The basic ejector functions such as suction, blow off and feedback are used with these signals.
In detail, they are:
Process data INPUT
Signal
Symbol
Parameter
0
OUT 1
Vacuum limit value H2 (“Part
Present” check)
Process data OUTPUT
Signal
Symbol
Parameter
0
IN 1
Suction ON/OFF
1
IN 2
Blow off ON/OFF
7.6 Start of Operations
A typical handling cycle is divided into the following three phases: pickup, blowoff and idle.
To check whether sufficient vacuum has built up, the limit value H2 is monitored by an integrated vacuum
sensor during suction and output to the higher-level controller via OUT.
Phase
Switching
step
NC version
NO version
Signal
Status
Signal
Status
1
1
IN1
Suction ON
IN1
Suction ON
2
OUT
Vacuum > H2
OUT
Vacuum > H2
2
3
IN1
Suction OFF
IN1
Suction OFF
4
IN2
Blow off ON
IN2
Blow off ON
3
5
OUT
Vacuum <
(H2-h2)
OUT
Vacuum <
(H2-h2)
6
IN2
Blow off OFF
IN2
Blow off OFF
Signal status changes from inactive to active.
Signal status changes from active to inactive.
