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6.2 Operating modes
The turbopump can be operated in different modes.
● Operation without control unit
● Operation via connection "X3"
● Operating via RS-485 interface from Pfeiffer Vacuum control unit or PC
● Operation via connection "E74"
● Operation via field bus
6.2.1 Operation without operating unit
Notes on operation without control unit
1. Only use the approved Pfeiffer Vacuum connection cables with bridges on the "X3" connection on
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 control unit
Connecting a Pfeiffer Vacuum control unit allows the turbopump to be controlled via static parameters
stored in the electronic drive unit.
Using control unit
1. Observe the appropriate operating instructions for handling Pfeiffer Vacuum control units:
2. Observe the electronic drive unit operating instructions from the scope of delivery of the vacuum
3. Connect the control unit to the "X3" multi-function connection of the electronic drive unit.
4. Switch on the turbopump power supply via the external power supply pack or the control unit with
6.2.4 Operation via field bus
Integrating and operating Pfeiffer Vacuum turbopumps in the customer's field bus system is possible
when using an electronic drive unit with a corresponding connection panel.
The following are available:
● Profibus
Instructions for field bus operation
► See the operating manual of the electronic drive unit with corresponding connection panel.
Automatic start
After bypassing the contacts at pins 2, 5 and 7 on the "X3" connection or when using a con-
nection cable with bridges and applying the supply voltage, the turbopump starts up imme-
diately.
the electronic drive unit.
– Operating instructions available from the
pump.
– Use a suitable connection cable with "RS-485" connection or an adapter for "X3".
integrated power supply pack.
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