G 03898 - Edition05 - August 1
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C 10
Operating mode
Example
Software monitoring
The absence or a too low flow of N
2
is software monitored.
This is defined by three parameters that can be adjusted through
the HHR
C 42
:
Purge level warning;
Purge sensor warning time (W13);
Purge sensor alarm time (D13).
Let’s consider that the setting of the
Purge
sensor parameters in the
SETTING
menu
C 42
is the following:
The sequences in case of N
2
loss will be the following ones:
As soon as pressure drops below the threshold (t=0 mn):
The yellow leds on the HHR
and in front of the pump will
turn “on”.
The purge warning message
(W13) is displayed on the
HHR.
The pump warning signal (remote control plug pins 2 and 3), the
purge feedback signal (remote control plug pins 37 and 38) and
the final valve interlock signal (remote control plug pins 8 and 9)
will open.
Pump will still be running.
At the end of the warning time (t=2mn):
The red leds on the HHR and in front of the pump will turn “on”.
The purge alarm message (D13) is displayed on the HHR.
The pump buzzer will turn on.
The pump alarm signal (remote control plug pins 4 and 5), the
purge feedback signal (remote control plug pins 37 and 38) and
the final valve interlock signal (remote control plug pins 8 and 9)
will open.
Pump will still be running.
At the end of the alarm time (t=5mn): Pump stops.
The
Purge sensor
parameters in the
SETTING
menu
C 42
is set
at factory as follows:
This means that the pump
monitoring will not take
decision to stop the pump in
case of N
2
loss or too low flow.
However all the information
to handle safety operations linked to the process gas panel are
provided through the “remote control connector” and the “safety
connector”.
“Purge sensor” setting
N
2
control operation
Purge
sensor
Warning
2 mn
Alarm time
5 mn
Purge
sensor
Warning
0 mn
Alarm time
Disabled
adixen Vacuum Products - A3H Series Operating instructions
