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These motors are not suitable for coupled operation! The single
bearing (option K00) must be used for this type of operation. Very high
speeds can be achieved with option L37.
Permissible vibrations
The site vibration response of the system, which is determined by
the output elements, the mounting conditions, the alignment, the
installation and the effects of external vibrations, may cause the
vibration values at the motor to increase. In the interests of reliable
motor operation and a long bearing service life, the vibration values
specified in Fig. 8 should not be exceeded. Under certain circumstances,
the rotor may need to be fully balanced with the output element.
2.3
Balancing, output elements
Suitable devices should always be used to push on or pull off the
output elements (e.g. the coupler disk, gear wheel or belt pulley).
The thread in the end of the shaft should be used for this purpose (see
Fig. 12).
In the standard design, the rotors are dynamically balanced with a
full feather key. Option L37 is normally supplied without a feather
key.
NOTE: The balancing method is marked on the shaft end face!
(F = Balancing with full featherkey)
(H = Balancing with half featherkey - special version)
When the output element is assembled, be careful to use the
correct balancing method!
Balancing with half featherkey
If the output elements have a length ratio < 0.8 (hub length l to shaft
end length l
) and a speed > 1500/min, a certain imbalance may be
M
noticeable (see Fig. 13).
A re-balancing procedure is necessary in this case, for example the
part of the featherkey T
which protrudes out of the output element and
P
projects beyond the contour of the shaft must be reduced.
The usual measures should be taken to
guard output elements from touch.
If a motor without output elements is started up, the featherkey
must be prevented from being spun out.
The permissible transverse and axial forces are shown on the graphs
in the Project Planning Instructions (please ask your Regional Office
or the manufacturer for further details if necessary).
2.4
Coolant connection
NOTE: For liquid cooling, sections 2.2.7.2 Materials for Pipes and
Fittings and 2.2.7.7 Electrical Components of the guideline VDI 3035
are to be taken into account.
For operation of the 1PH4 motors, a closed coolant circuit with a heat-
exchanging unit is necessary. On the ND-end, there are holes for
connecting the coolant supply. The two threaded joints here (6.85 Fig.
2) are to be removed. If the direction of the coolant flow is not marked
by arrows, either of the two holes can be selected as the inlet and the
other as the outlet.
Fig. 4 makes it possible to determine the flow rate of cooling water and
the cooler efficiency needed in order to adhere to the to the specified
shaft output during rated operation (max. inlet temperature of the
cooling water + 30°C), otherwise there will be a decrease in performance.
Anti-corrosion agent can be added to the water. Mixture: max. 25%
anti-corrosion agent (e.g. Tyfocor) and 75% water.
If possible no non-ferrous metals such as copper or brass piping may
be used for the cooling circuit (formation of electrolyte!).
It is recommended that a filter be used which traps up to 95 per cent of
particles with a size of 100 µm.
The pressure-relief valve must be fitted after the filter in the cooling
circuit. For the maximum permissible pressure at the pressure-relief
valve, see Fig. 4.
6
ENGLISH
2.5
Electrical connections
Connect the motor in accordance with the enclosed circuit
diagram. Note the markings on the rating plate!
General connection instructions:
- The connecting leads must be suitable for the type of application and
for the anticipated currents and voltages,
- The connecting leads, the strain relief device and the devices which
protect against rotation and transverse forces must be adequately
dimensioned, and the connecting leads must be prevented from
kinking,
The PE conductor must be connected to
Instructions for connecting the terminal box:
- The ends of the leads must not be stripped farther than necessary,
i.e. the insulation must extend almost up to the cable lug or the
terminal,
- The size of the cable lugs must be matched to the dimensions of the
terminal board connections and the cross-section of the mains
cable; if necessary, the connecting leads must be laid parallel,
- The PE conductor must be connected,
- The inside of the terminal box must be kept clean and free from cable
residues,
- All the screws and bolts of the electrical connections on the terminal
boards (but not the terminal blocks) must be tightened to the
specified torques (see Fig. 7),
- The minimum clearances in air specified in Fig. 6 must be observed,
both when connecting and when re-arranging internal connecting
leads,
- The minimum clearances in air must be observed for live, non-
insulated parts. Attention must be paid to protruding wire ends,
- Any entries which are not in use must be sealed and the sealing
elements screwed in firmly and tightly,
- All the sealing surfaces of the terminal box must be in good condition,
to ensure that the requirements of the protection class are satisfied!
2.5.1 Power connection
The power must be connected via the terminal box.
The correct phase sequence is vital!
The motor must always be operated with a converter with a suitable
power output.
NOTE: The cable lugs of the power terminals must rest directly on
the cable lugs of the motor winding terminals in the terminal boxes of
the 1PH4 10. motors.
2.5.2 Pulse encoder and temperature sensor
The pulse encoder and the temperature sensor are connected by
means of the flange-mounted connector with pins integrated in the
terminal box.
2.6
Start-up
Caution - high temperatures!
High temperatures in excess of 80 °C may occur on
the motor surfaces.
No temperature-sensitive parts, such as ordinary leads or
electronic components, must be touching or fixed to these
surfaces.
Protection must be provided against electric shock
moving parts if necessary!
Do not carry out any work unless the
system is dead!
.
(see Fig. 5)
The three-phase system must never be
connected directly, since this will cause the
motor to be damaged beyond repair.
and
Siemens AG
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