8. Control system
37
8.5.3 Setting line pressure
(only L07RS-L11RS)
Speed is controlled with the aid of a PI controller
implemented in the software and is matched to the
demand for compressed air. In the [ CONTROL MENU ]
menu you have to set the maximum line pressure
switching point (CUT-OUT POINT) and the TARGET
PRESSURE.
When the maximum line pressure switching point is
reached, the machine switches to off-load.
In the range between TARGET PRESSURE and CUT-
OUT POINT the speed of the machine is regulated
according to the compressed air requirement.
Example:
CUT-OUT POINT 10.0bar
TARGET PRESSURE 9.5bar
The speed of the machine is regulated according to the
need for compressed air so that the set pressure of
9.5 bar is maintained.
When the line pressure reaches 10.0 bar, the machine
switches to off-load.
Max. line pressure:
The max. line pressure is set in the [ CONTROL MENU ]-
sub-menu. The
+
keys have to be pressed at the
same time to do this. You are then taken to the main
menu. Use
to switch to the [ CONTROL MENU ] sub-
menu. Then please press the
key
.
The CUT-OUT POINT menu item now appears on the
display. Again pressing the
–
key causes the value to
flash. You can now correct (increase or decrease) this
value using
or
. Then confirm the value set by
pressing the key.
Note
The control system checks whether the value set can be
used. The maximum line pressure CUT-OUT
POINT
must be at least 0.2 more than the TARGET PRESSURE.
You may therefore have to first set the TARGET
PRESSURE. To prevent
your compressor suffering from
excess wear, the difference between the CUT-OUT
POINT
and
TARGET
PRESSURE
should not be too small.
Target pressure:
In the [ CONTROL MENU ] sub-menu please use
to go to the TARGET PRESSURE menu item.
Pressing the key causes the value to flash.
You can now correct (increase or decrease) this value
using
or
. Then confirm the value set by pressing
the key.
8.5.4 Setting time/date (timer)
The DELCOS
Pro
accumulator can bridge a loss of
power lasting between around two to three weeks. If
power is lost for longer periods, the timer's time and
date are lost and have to be entered anew.
Press the
+
keys at the same time. Use
to go
to the [ TIMER CONTROL ] sub-menu and press the
key. The date and time are displayed there in the
following format:
TU 30.10.07 12:10:34
If you press the key, the left-hand value (day of the
week) starts to flash. You can now use the
or
keys to set this. Then confirm the value by pressing the
key.
All values can now be set in succession using this
procedure. When the last value (seconds) has been set,
the timer is fully set and you can exit the menu by twice
pressing the
+
keys at the same time.
8.6 Starting the unit
Danger
If the unit is ready, i.e. the green LED is flashing,
the compressor may automatically start at any time.
Use the main switch to switch the unit on.
If warning or fault messages appear in the third row of
the display, these first have to be rectified and
confirmed using the key.
Then start the unit by pressing the
I
key on the DELCOS.
8.7 Switching off the unit
The unit is switched off by pressing the
key on the
DELCOS
Pro
. However the unit will only stop after a 30-
second soft-stop.
The soft-stop is preset to protect the compressor.
Note
The unit may only be shut down using the emergency
off button in real emergencies. When shutting down
normally, please use the
key.
8.8 Emergency off button
The emergency off button is situated next the DELCOS
Pro
. It is used to immediately shut down the unit. Only
use the emergency off button to shut down the unit in
emergencies. When shutting down normally, always
use the
key.
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