HBM t40 Montageanleitung Seite 16

16
lock washers are inserted between the antenna segments (these ensure that
there is a defined contact resistance).
4. Now fasten all the bolted antenna segment connections with a tightening
torque of 5 N⋅m.
5. Then align the antenna to the rotor in such a way that the antenna
encloses the rotor more or less coaxially and the antenna wire in the axial
direction shows the position and the center of the transmitter winding on
the rotor. To make this alignment easier, the antenna segment and the
side of the rotor flange with the transmitter winding have the same width.
Please comply with the permissible alignment tolerances stated in the
specifications.
Fig. 3.4: Alignment of the rotor with the stator
6. Now fully tighten the bolted stator housing connection.
CAUTION
To make sure that they function perfectly, the fan type lock washers
(A5.3 FST DIN 6798 ZN/galvanized) must be replaced after the bolted
antenna connection has been loosened three times.
Depending on the operating conditions, oscillations may be induced in the
stator. This effect is dependent on
• the speed
• the antenna diameter (depends in turn on the measuring range)
• the design of the machine base
To prevent this oscillation, it is essential that the customer supports the
antenna ring. There is a hole (∅ 4.2 mm or 5.2 mm) on the upper antenna
segment, which can be used to incorporate a clamping device (see 3.3.1,
Figure 4).
HBM
T40
A2463 5.0 en/de