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USE
The controller can be used in two different modes:
• setting mode
• operating mode
The first mode enables the user to set some operating
parameters, the second one is the normal operating
condition.
Setting Mode
To access the setting mode the HV ON/OFF switch
must be set to the OFF position.
The parameters that can be set are accessed by
repeatedly pressing the "MENU" pushbutton of the front
panel. At this time the "START/PROT" pushbutton can
be pressed to select the "Protect" mode at the switching
ON.
1.
The first selection of the "MENU" push-button to
sets the Set point 1 value. The display shows the
stored value and the flashing exponent can be
changed by the "Arrow" push-button. Pressing the
"I" pushbutton you can select another figure to be
modified. The default value is 1.0 x 10
setting value are from 0.0 x 10
that values equal to 0 are meaningless.
2.
Pushing the "MENU" push-button a second time
shows the Set point 2 value. The display shows the
stored value and the flashing exponent can be
changed by the "Arrow" push-button. Pressing the
"I" pushbutton you can select another figure to be
modified. The default value is 1.0 x 10
setting value are from 0.0 x 10
that values equal to 0 are meaningless.
3.
Pushing the "MENU" push-button a third time
shows the Protect value. The display shows the
stored value and the flashing figures can be
changed by the "Arrow" push-button. The only
figures that can be changed are the units and the
tens, while the exponent is fixed to 10
pressing the "I" pushbutton you can select the
figure to be modified.
The default value is 1.0 x 10
4.
Pushing the "MENU" push-button a fourth time
stores the set values.
NOTE
The "MENU" push-button must be always pressed until
the last step to store the new values.
The settings remain stored even when the controller is
switched off.
All manuals and user guides at all-guides.com
-3
and the
-7
-2
to 9.9 x 10
. Note
-3
and the
-7
-2
to 9.9 x 10
. Note
-2
. By
-2
.
30
TECHNICAL INFORMATION
Operating Mode
During the normal operating condition the only available
operations are:
1.
Switching on/off of the high voltage
2.
Selection of the value (voltage or current) to be
displayed
3.
Selection of the maximum output voltage value.
To switch on the high voltage the front panel switch HV
ON/OFF must be set in ON position.
When the high voltage is switched on the front panel
LEDs 3Kv/5Kv/7Kv show the preset maximum voltage
value.
To change the maximum output voltage value, press
the "Arrow" push-buttons in the front panel: the
"Upwards arrow" push-button increases the value, the
"Downwards arrow" push-button decreases it.
To display the output voltage, press the "V" push-button
in the front panel; to show the current the "I" push-
button must be pressed.
To switch off the high voltage the HV ON/OFF switch
must be set to OFF position.
PRESSURE VS CURRENT DIAGRAMS
In the following pages are shown the pressure vs
current diagrams of MidiVac for all VacIon pumps.
If two ion pumps are connected to the MidiVac, the
displayed current will be a sum of the two currents
drawn by the pumps.
ACCESSORIES AND SPARE PARTS
The MidiVac accessories and spare parts are detailed
in the following table.
DESCRIPTION
MD-RS232 serial communication
card
MD-RS422 serial communication
card
MD-RS485 serial communication
card
MD-Set Point card
Rack adapter
HV bakeable cable, radiation
resistant, 4 m (13 ft.) long, with
interlock
HV bakeable cable, radiation
resistant, 7 m (23 ft.) long, with
interlock
HV bakeable cable, radiation
resistant, 10 m (33 ft.) long, with
interlock
HV bakeable cable, radiation
resistant, 20 m (66 ft.) long, with
interlock
P.N.
929-5010
929-5011
929-5012
929-5020
929-0064
929-0705
929-0707
929-0708
929-0709
87-900-080-01 (D)
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