Siemens SLI-5310 Instruções de Operação descarregar pdf (Página 32)

ECN/EQN/ERN 1300

ECN/EQN 1100

32

Mechanical design types and mounting

Rotary encoders with integral bearing and stator coupling

ECN/EQN/ERN rotary encoders have

integrated bearings and a mounted stator

coupling. The encoder shaft is directly

connected with the shaft to be measured.

During angular acceleration of the shaft,

the stator coupling must absorb only that

torque caused by friction in the bearing.

ECN/EQN/ERN rotary encoders therefore

provide excellent dynamic performance

and a high natural frequency.

Beneﬁ ts of the stator coupling:

• No axial mounting tolerances between

shaft and stator housing for ExN 1300

• High natural frequency of the coupling

• High torsional rigidity of shaft coupling

• Low mounting or installation space

requirement

• Simple axial mounting

Mounting the ECN/EQN 1100 and

ECN/EQN/ERN 1300

The blind hollow shaft or the taper shaft of

the encoder is connected at its end

through a central screw with the measured

shaft. The encoder is centered on the

motor shaft by the hollow shaft or taper

shaft. The stator of the ECN/EQN 1100 is

connected without a centering collar to a

ﬂ at surface with two clamping screws. The

stator of the ECN/EQN/ERN 1300 is

screwed into a mating hole by an axially

tightened screw.

Mounting accessories

ECN 11xx: mounting aid

For disengaging the PCB connector,

see page 34

ECN/EQN 11xx: mounting aid

For turning the encoder shaft from the back

so that the positive-locking connection

between the encoder and measured shaft

can be found.

ID 821017-01

ERN/ECN/EQN 13xx: inspection tool

To inspect the shaft connection (fault

exclusion for rotor coupling)

ID 680644-01

HEIDENHAIN recommends checking the

holding torque of frictional connections

(e.g. taper shaft, blind hollow shaft).

The testing tool is screwed in the M10

back-off thread on the back of the encoder.

Due to the low screwing depth it does not

touch the shaft-fastening screw. When the

motor shaft is locked, the testing torque is

applied to the extension by a torque

wrench (hexagonal 6.3 mm width across

ﬂ ats). After any nonrecurring settling, there

must not be any relative motion between

the motor shaft and encoder shaft.

Antriebsgeber_en_2013.indd 32 12.11.2013 06:54:39

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