VACUUBRAND PC 600 LAN NT - Manual (Page 52)

page 52 of 102
The controller has been shipped with the following configuration:
• Basic mode ”VACUU•LAN” (VACUULAN)
• ”Control Pump” is configured (pump is switched)
Working with the controller
Notes on selecting the factory-set basic mode
The controller VNC 2 can be adapted optimally to the spe-
cific application by choosing the appropriate factory-set ba-
sic mode VACUU•LAN, continuous pumping, vacuum
control or RC 5/RC 6 management. The components of
a chemistry vacuum system (e.g., ”Valve”, ”VACUU•LAN”)
have to be preset once only.
The last mode of operation and the preselected values (e.g., pressure
value or time for switching off) are stored.
If the preselections are chosen appropriately, it is possible to start imme-
diately if similar operating conditions are desired.
NOTICE
Basic mode ”VACUU•LAN” (VACUULAN)
• operation of a vacuum pump with or without an in-line valve
• control of a speed controlled pump (NT VARIO) according to require-
ments (only with VNC 2 VARIO!)
• control of a vacuum local area network (VACUU•LAN ® )
Parameters
+
Switch-off time (t Off, factory-set: 15 min): If the pressure drops be-
low the ”Lower pressure value” (p Set), a time-meter starts to run and
the motor speed is reduced (only with NT VARIO / VARIO-B pumps).
When the pressure exceeds the ”Lower pressure value”, the time me-
ter for automatic shut down is reset. If the vacuum is below ”p Set”
for longer than the ”Switch-off time”, the process control stops. The
vacuum pump is switched off. In the event of a sudden high-pressure
spike, the pump starts again even if the ”Upper pressure value” has