5 General Description of Functions
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EN-US · 30.30.00.00422 · 08 · 09/22
3. Press the
MENU
button to leave adjustment mode.
ð
The value will flash briefly to indicate that a changed parameter is being applied.
5.5 Locking the Keypad
ü
The ejector is not in any menu.
4
Pressing the
MENU
and
DOWN
buttons at the same time locks the buttons.
4
Pressing both buttons again unlocks the keypad.
5.6 Vacuum Monitoring
The ejector has an integrated sensor for monitoring the current system vacuum. The vacuum level pro-
vides information about the process and has an effect on the following signals and parameters:
•
The limit value LED H1
•
The limit value LED H2
•
The signal output H2
5.7 Control Function
The ejector allows you to conserve compressed air or prevent an excessive vacuum from being generated.
Vacuum generation is interrupted when the set limit value H1 is reached. If leakage causes the vacuum to
fall below the hysteresis limit value (H1-h1), vacuum generation resumes.
The control function can be deactivated by setting the limit value for H1 to “Max.”
5.8 Changing the Blow-Off Flow Rate on the Ejector
The figure shows the position of the valve screw
(1) for adjusting the blow off flow rate. The valve
screw is equipped with a stop on both sides.
•
Rotate the valve screw (1) clockwise to reduce
the flow rate.
•
Rotate the valve screw (1) counterclockwise to
increase the flow rate.
+
-
1
5.9 Supply Voltage Display
In operating modes in which no LEDs are activated, the “Max” LED lights up briefly. This indicates a sup-
ply voltage.
5.10 Signal Output
The ejector has a signal output.
The signal output is a normally open (NO) contact and cannot be changed.
The signal output is switched on or off when the system vacuum is higher or lower than the relevant limit
value.
