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9. Control system
34
9.5.3
Setting line pressure (only L15 RS -
L22 RS)
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.
9.5.4
Setting time/date (timer)
The 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.
9.6
Starting the unit
Warning
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
GD PILOT.