Fastening the electronic drive unit
1. Screw an M4 × 12 Allen head screw with shake proof washer into the bore in front of the power
supply plug of the electronic drive unit.
2. Screw an M4 × 12 Allen head screw into the bore in front of the electronic drive unit connection
panel.
3. Use all of the other M4 x 65 Allen head screws to fasten the electronic drive unit to the turbopump.
–
Tightening torque: 2.5 Nm
4. Remove the screw plugs from the electronic drive unit connections.
5. Keep them in a safe place.
7.4.3 Confirming the speed specification
The typical nominal rotation speed of a turbopump is preset at the factory in the electronic drive unit. If
the electronic drive unit is replaced or a different pump type is used, the reference set value of the nomi-
nal rotation speed is cleared. The manual confirmation of the nominal rotation speed is part of a redun-
dant safety system as a measure for preventing excess rotation speed.
HiPace Confirmation of nominal rotation speed [P:777]
1200 / 1500 630 Hz
1800 / 2300 525 Hz
2800 455 Hz
Tbl. 16: Characteristic nominal rotation speeds of the turbopumps
Required aids
●
A connected Pfeiffer Vacuum display and control unit.
●
Knowledge of the configuration and setting of electronic drive unit operating parameters.
Adjusting the nominal rotation speed confirmation
1. Observe the display and control unit operating instructions.
2. See the electronic drive unit operating instructions.
3. Set the parameter [P:794] to "1" and activate the expanded parameter set.
4. Open and edit the parameter [P:777].
5. Set the parameter [P:777] to the required value of the nominal rotation speed in Hertz.
Maintenance
52/74
To Next Page
Loading...
