Parameter Name
Designation
Setting
[P:720]
VentSpd
Venting at rotation speed, delayed venting 50 %
[P:721]
VentTime
Venting time, delayed venting
3600 s
Tbl. 8:
Factory setting of the electronic drive unit for turbopumps when delivered
Notes for turbopump commissioning
1. When using water cooling, observe the cooling water flow and throughput.
2. When using sealing gas, observe the sealing gas flow and throughput.
3. Provide the current supply for the power supply pack.
4. Make sure you install suitable touch protection during the configuration of the temperature man-
agement
[P:058]
= "1" if the vacuum pump is freely accessible.
6.2 Operating modes
The turbopump can be operated in different modes.
● Operation without control unit
● Operation via connection "X3"
● Operation via RS-485 interface and Pfeiffer Vacuum display and control unit or PC
6.2.1 Operation without operating unit
Automatic start
The turbopump starts up immediately on bridging the pin 2, 5, 7 contacts on the "X3" con-
nection or using the a connection cable "with bridges" and running the supply voltage.
Notes on operation without control unit
1. Only use the approved Pfeiffer Vacuum connection cables with bridges on the "X3" connection on
the electronic drive unit.
2. Only switch on the power supply of the turbopump immediately before operation.
After applying the operating voltage, the electronic drive unit carries out a self-test to check the supply
voltage. After completing the self-test successfully, the turbopump starts and activates connected addi-
tional equipment according to the configuration.
6.2.2 Operation via multi-function connection "X3"
Remote control is available via the 15 Pole D-Sub connection with the “X3” designation on the electron-
ic drive unit. The accessible individual functions are mapped to "PLC levels".
Instructions for remote control operation
► See the electronic drive unit operating instructions.
6.2.3 Operation via Pfeiffer Vacuum display and control unit
The connection of a Pfeiffer Vacuum display and control panel permits the controlling of the turbopump
via the parameters fixed in the electronic drive unit.
Instructions for operation with display and control unit
1. When handling the Pfeiffer Vacuum display and control unit, observe the associated operating in-
structions:
– "DCU" operating instructions available from the
– "HPU" operating instructions available from the
2. Observe the electronic drive unit operating instructions from the turbopump scope of delivery.
3. Connect the “RS-485” connector of a suitable connection cable to the DCU.
4. Switch on the turbopump current supply via the external power supply pack or the DCU with inte-
grated power supply pack.
Operation
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