Key
Parameter | use
Description
corresponds to
[010]
= 0 or 1
Pumping station ON/OFF:
All components are put
into/out of operation according to their configuration
Error acknowledgement (Reset):
Resets active malfunc-
tion messages in case the cause is eliminated.
[308]
-->
[309]
Scroll forwards through the parameter set
[309]
-->
[308]
Scroll back through the parameter set
Press simultaneously
Editing mode:
Allows the setting of parameter options
The arrow
- - - >
designates the option selection in the dis-
play
Press simultaneously
again
Selection mode:
Accepts the selection made ("change
confirmed" is displayed)
Tbl. 10:
Description of the key functions of the DCU
6.4 Stand-by operation
Depending on the turbopump's power consumption, the electronic drive unit controls the backing pump
operation. When the backing pump is in stand-by operation, the overall power consumption of the
pumping station and the backing pump operating temperature are reduced.
● Stand-by operation for ACP backing pumps --> pre-set
● Stand-by operation for HiScroll backing pumps --> pre-set
● Stand-by operation for rotary vane pumps --> configurable
Turbopump
Switch-off threshold [P:710]
Switch-on threshold [P:711]
HiPace 80/TC 110
10 W
20 W
HiPace 300/TC 400
50 W
70 W
HiPace 400/TC 400
65 W
110 W
HiPace 700/TC 400
65 W
110 W
Tbl. 11:
Pre-set switching thresholds for stand-by operation with ACP and HiScroll backing
pumps
Alternative: Switch on stand-by operation for rotary vane pumps
Fluctuations in power consumption depend on the power consumption of turbopump during idle mode
and on the varying fore-vacuum pressures.
Switching thresholds for stand-by operation of rotary vane pumps as backing pumps are configurable
via the DCU.
1. Determine the optimum switching threshold for the respective rotary vane pump for your applica-
tion.
2. Set parameter
[P:794]
to "1" (display extended parameter set).
3. Configure the switching thresholds for parameters
[P:710] and [P:711]
according to the operating
instructions for the respective electronic drive unit.
6.5 Operation with gas ballast
WARNING
Risk of poisoning from incorrect use of the gas ballast system
The gas ballast system of the scroll pump is vacuum sealed only when used in valid, snapped posi-
tions "0", "1" and "2". When operating the valves in intermediate stages, there is a risk that process
media can escape to the environment uncontrolled. When using toxic process media, there is a risk
of poisoning.
► Change the positions of the valve only for setting the gas ballast stages.
► Operate the gas ballast valve only in the snap positions.
Operation
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