Operation - Siemens 1FT Serie Sicherheits- Und Inbetriebnahmehinweise

General information
All information and instructions contained in
instruction manuals or any other instructions
supplied must be observed.
This is indispensable for the avoidance of risk and damage!
An additional safety information sheet is enclosed (yellow) which
provides supplementary information on the safety of electrical
machinery and equipment. This safety information is therefore also
intended to supplement all other instruction manuals or any other
instructions supplied.
Furthermore, the applicable national, local and plant-specific
requirements and regulations must be observed!
The technical specifications of special versions and design
variations may differ from those specified! If you have any doubts
whatsoever, we strongly advise that you consult the manufacturer,
giving details of type designation and serial number, or that you have
the service work carried out by a SIEMENS Service Center.
NOTE: Fig. 2 ... (Spare Parts) see Annex page 14
1 Description
1.1 Range of applications
The 1FT6 motors are designed in particular to be used as drive units for
machine tools, robots, loading equipment and the like. They can be
installed in roofed-over areas with normal climatic conditions. The motors
are designed for ambient temperatures of -10°C to +40°C.
Measuring-surface sound-pressure level (to DIN EN 21 680 Part 1)
for a speed range from 0 to 3000 rpm
1FT6 06. - 13. (without separately driven fan) approx. 70 dB(A)
1.2 Mode of operation and construction
The 1FT6 motors are permanent-field three-phase AC synchronous
motors for operation with motor-controlled pulse-width-modulation inverters
according to the sinusoidal current principle. They are characterised by
good dynamics and a wide speed range.
There is a temperature sensor incorporated in the three-phase motor
stator winding which acts as a motor protector.
The tachogenerator and rotor position encoder integrated in the
standard version serve as a means of identifying the speed and position
of the rotor.
The integral sensor system serves for detection of the rotor position and
motor speed and can also be used as a position sensor for NC control.
Depending on the accuracy requirements of the particular application,
either a resolver or an encoder (optical sensor system) is installed.
Additional fittings and attachments (to order) included in the scope
of supply
- Separately driven fan
- Fail-safe holding brake;
NOTE: Retrofitting of the brake is not possible!
2

Operation

2.1 Transportation, storage
If motors are fitted with lifting lugs, these should be used for lifting and
transporting the motors. If a motor is not put into service immediately on
receipt, it should be stored in a dry and dust-free room where it will not be
subjected to shocks.
2.2 Installation
Take note of the information regarding type of construction and degree of
protection given on the rating plate and check that these specifications
match the site conditions!
NOTE: In the case of machines where the shaft end points upwards, it is
imperative to ensure that no liquid (water, machining coolant, etc.) can run
into the top bearing.
Never strike or exert pressure on the end of the shaft when installing the
motor!
4
ENGLISH
The motor must be fitted in such a way that heat loss can be adequately
dissipated. For motor versions equipped with separately driven fans it may
be necessary to clean the air intake grille.
electronic components should be touching or attached to these
surfaces. If necessary, take precautions to prevent contact!
The system vibration behaviour on site caused by drive elements,
mounting conditions, alignment and installation and by vibration influences
from an external source may increase the vibration values of the motor.
With a view to correct functioning of the motor and long bearing life, the
vibration values shown in Fig. 5 must not be exceeded. Complete
balancing of the rotor together with the drive element may possibly be
necessary.
2.3 Drive components, balancing
The fitting and removal of drive components (e.g. coupling disc, belt
pulley, gearwheel, etc.) must be carried out with suitable equipment. Use
the threaded hole provided in the end of the shaft (see Fig. 6.1)
put into operation without a drive component attached, the
featherkey must be secured so it is not thrown out of its slot.
The permissible transverse and axial forces are specified in the diagrams
included in the design selection manual (if necessary, consult your local
regional office or the manufacturer).
If axial forces act towards the motor, the drive component must rest
against the shoulder of the shaft. If necessary, fit a spacer bush!
There must be no axial forces acting on motors
with an integral brake!
Standard motors are supplied dynamically balanced with half featherkey.
NOTE: Observe the balancing code shown on the rating plate !
(H = balanced with half featherkey)
(F = balanced with special-design full featherkey)
The balancing code is indicated only if a keyway is provided in the shaft
end. When fitting drive components, check for matching rotor balance
specifications!
Balancing with half featherkey may cause unbalance in drive components
with a ratio of hub length l to shaft-end length l
rpm (see Fig. 6.2).
It may be necessary to re-balance the unit, for example by removing that
part of the featherkey, T
P
stands proud of the shaft.
2.4 Electrical connections
manent magnets, a voltage is generated at the motor terminals
when the rotor is turned.
The motor and, if provided, the separately driven fan must be connected
up as shown in the circuit diagrams supplied.
Basic rules for connecting motors:
- The connecting leads should be suitable for the type of use, as well as
the voltages and amperages concerned.
- The connecting leads should be of sufficient length, and should be
secured against twisting, tensional stress and kinking.
- The protective earth must be connected to the terminal marked
When using a plug connector, make sure that
- the male connector engages properly in the keying slot, and that
- the connector union nut is hand-tight to ensure proper electrical contact
and that the connection is properly sealed.
The surfaces of the motors can reach high
temperatures of over 100°C. No temperature-
sensitive items such as normal wires or
The general safety precautions regarding
prevention of contact with the drive
components must be observed. If a motor is
< 0.8 and at speeds > 1500
M
, which extends beyond the drive component and
The system must be disconnected from the
power supply before any work is carried out!
Due to the fact that the motors contain per-
.