Working with the controller, Basic mode ”vacuu•lan” ( vacuulan ), Suggested values for process parameters – VACUUBRAND PC 600 LAN User Manual
Page 22
Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check
carefully the validity of this document with respect to his product. Manual-no.: 999084 / 05/10/2009
page 22 of 46
Notes on selecting the basic mode
The controller VNC 1 can be adapted to the specific application by choosing the appro-
priate mode, VACUU•LAN, continuous pumping, vacuum control, pressure check
or RC 5/RC 6 management. The components of the chemistry vacuum system (e.g.
”Valve”, ”VARIO”) have to be preset once only.
The basic mode as from last operation and the preselected values (e. g. for pressure,
pumping speed or switch-off time) are stored. In case of similar operation conditions it
is possible to start immediately, if the preselections are chosen appropriately.
Basic mode ”VACUU•LAN” (VACUULAN)
•
operation of a vacuum pump with or without an isolation valve
•
control of a speed controlled pump (VARIO) according to requirements
Parameters
☞ Switch-off time (t Off, factory-set: 15 min): If the actual pressure is below the lower set point, the
time meter for automatic shut down is started; additionally the pumping speed is reduced (VARIO
pumps only). If the actual pressure is higher than the lower set point the time meter for automatic shut
down is reset. The process control stops when the switch-off time has passed. The vacuum pump is
switched off. The pump starts again in case of great pressure increase.
☞ Upper pressure value (p On, factory-set: 200 mbar): Condition for restart of the pump when the
pressure is increasing. If the actual pressure is higher than the upper set point, the pump starts again.
☞ Lower pressure value (p Set, factory-set: 50 mbar): Condition for switching off the pump.
☞ Time of process (tProcess, factory-set: 99 h): Check if the switch-off time is reached within the
preset time of process. If the switch-off time is not reached, an error message ”CheckSys” appears. In
that case, check the process parameters and/or the vacuum system, see section ”Troubleshooting”.
☞ Preselection of Auto-Start (Auto-St.,factory-set ”No”): Process starts immediately after switching on
the controller.
Working with the controller
The controller is configured at the factory as follows:
•
Basic mode ”VACUU•LAN” (VACUULAN)
•
”Control pump” is configured (pump is switched)
Suggested values for process parameters
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N
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0
0
5
C
P
0
1
-
5
0
2
-
5
1
0
0
6
-
0
0
4
N
A
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0
0
6
C
P
0
1
-
5
0
1
-
5
0
0
6
-
0
0
4
Attention: If Auto-Start (Auto-St.) is preselected, the process starts immediately
after switching on the controller without pressing any further key if the process control
has not been terminated by pressing key ”Esc”.
It is the user’s responsibility to ensure that no dangerous status of the system due to
the automatic startup of the pump, e.g. after a power failure, can occur and to provide
appropriate safety measures. If necessary, the user has to check prior to using the
equipment if the option ”Auto-Start” is enabled.