Technical description
Item no. 11207001-01, Revision 00
11 ( 36 )
5.2
Electrical connection
The HF spindle may only be operated with a frequency converter (FC).
Ü
Check whether the current, voltage, and frequency data of the HF spindle
match the raw data for the frequency converter.
Ü
Use a motor supply line that is as short as possible.
Ü
Adjust the speed of the HF spindle using the FC.
Ü
Refer to the frequency converter manual for further information.
The FC detects the following operating states of the HF spindle, depending on
the version:
q
HF spindle rotating.
q
HF spindle too hot.
q
HF spindle at a standstill, etc.
The FC forwards the operating states of the HF spindle to the machine con-
troller.
Note: Connect the SpeedTEC quick locking connector.
u
For the combination SpeedTEC connector plug/SpeedTEC cable plug:
u
Remove the O ring on the SpeedTEC connector plug.
5.3
Cooling
The high frequency spindle is cooled by an electric fan.
Note: Extension of the service life through heat dissipation.
Heat is produced during operation of the HF spindle. The temperature of the
HF spindle should not exceed + 75°C as this shortens the service life of the
bearing.
u
Always switch on the electric fan as soon as the machine enters opera-
tion.
u
Check the temperature of the HF spindle on the housing.
Before the HF spindle is started each day:
Ü
Check the electric fan for damage.
Ü
Check the air intake of the electric fan.
Ü
Ensure that the fan wheel rotates properly.
5.4
Sealing air
For guidelines on air quality,
see "Air purity classes (ISO
8573-1)
" section.
The sealing air prevents foreign bodies such as chips and liquids (e.g. emul-
sions) from entering the HF spindle.
Ü
Check that air escapes at the front between the housing and the rotating
parts of the HF spindle.
