Motor Configuration; Safety; Properties - Tecnotion QTR 65 Series Manual

3. MOTOR CONFIGURATION

This chapter gives information for designing an application driven by a
Tecnotion torque motor. Please take notice of the advice, tips and warnings
in this chapter to make sure the torque motor performs in the best possible
way.
3.1

Safety

Use of magnets
The used magnets show large attraction forces on all ferromagnetic
objects such as iron. These forces cannot be controlled by hand. They
may cause serious jamming danger. Do not bring any soft magnetic
objects (iron) nearer than 25 cm of the magnetic side of the magnets
of the rotor.
Provide sufficient radial and axial centering and guidance to prevent
collision during installation.
Be sure that the stator and rotor are fixed into your machine before
removing the magnetic field protection plates. The stator and rotor
will attract each other during installation. These forces cannot be
controlled by hand. Put the magnetic field protection plates or fixation
brackets on again before dismounting them.
Magnetic sensitive objects like banking cards, pacemakers or other
magnetic information carriers may be damaged if they are brought
within 1 m of the magnets (plates or rotor).
If at any time and in any situation there is any doubt about the safety of
the motor, do not use it and contact your supplier.
©2021 Tecnotion BV - All rights reserved - The contents of this document are subject to change without prior notice.
Mechanical safety
The motor is used as a part of a machine. The user has to take care that
the machine as a whole fulfils all CE requirements.
Be sure your machine as a whole meets the requirements of all
applicable electrical standards, such as the EN 60204 standard.
The motor is powered by a servo amplifier. In case of a power
disruption or fatal error this may automatically result in a free run out
of the motor. Make mechanical precautions to prevent damage on the
motor or your machine in the case of such an event.
The magnets can detach from the rotor when the motor is operated
above its allowed maximum rotational speed. This can cause personal
injury or damage to the motor and the entire application. This speed
varies per motor type. Please set the correct maximum speed for the
installed torque motor. Refer to appendix G for maximum mechanical
speed.
3.2

Properties

The relevant properties concerning configuration of a torque motor are
described below.
Corrosion
The Tecnotion torque motor lamination stack surface is made of bare steel
and is prone to corrosion. When the lamination stack surface is not pro-
tected it will show corrosion, this however will not affect performance.
Cooling
In order to achieve rated performance, the stator needs to be mounted in a
cooled housing. The full lamination stack needs to be in contact with a 20°C
surface. Insufficient cooling will have an effect on the motor's continuous
torque.
MOTOR CONFIGURATION
10