TR-Electronic IH 8 Series, User Manual

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Printed in the Federal Republic of Germany  TR-Electronic GmbH 2016, All Rights Reserved
10/23/2019 TR - ECE - BA - GB - 0120 - 13 Page 23 of 40
5 Mounting
Danger of death, serious physical injury and/or damage to property due to
deactivation of safety functions, caused by an unstable shaft drive!

The system manufacturer must implement suitable design measures, so
that the drive of the measuring system is ensured at all times through
the shaft and mounting of the measuring system (fault exclusion). The
specifications of DIN EN 61800-5-2:2014-06 - Draft "Adjustable speed
electrical power drive systems, Safety requirements, Table D.8 – Motion
and position sensors" must be observed.

In general, the requirements and acceptance conditions for the complete
system must be taken into account for mounting.

All fastening screws must be secured against unintentional loosening.

Use at low ambient temperatures results in increased values for the
start-up torque. This fact must be taken into account for mounting,
design of the shaft coupling and shaft drive.
5.1 Solid shaft
5.1.1 Requirements
As the installation situation is application-dependent, the following notes are not exhaustive.

A suitable coupling with form closure must be used for the application. The coupling must be
dimensioned so that fault exclusion is ensured for the mechanical mounting of the measuring
system in accordance with DIN EN 61800-5-2, depending on the static and dynamic load
cases. If this is not possible, the hazard must be incorporated into the risk assessment for the
application in the form of a coupling breakage.

The coupling manufacturer's information and installation requirements must be observed.

In particular, you must ensure that
– the coupling is suitable for the specified speed and the potential axial offset,
– installation is on a grease-free shaft,
– the coupling and the measuring system are not axially loaded,
– the clamping screws are tightened with the torque defined by the coupling manufacturer,
– the coupling screws are secured against unintentional loosening.

Axial slipping of the measuring system on the drive shaft must be prevented by the coupling
fixing, see Figure 1, (1).

Radial slipping (slip) of the measuring system on the drive shaft must be prevented by means
of form closure by using a parallel key / groove combination (Figure 1, (2)); a coupling with
groove must be used for this purpose.