Operation; Installation - Siemens 1LG4 Betriebsanleitung

General note
The data and recommendations
WARNING
specified in all the instructions sup-
plied, and in all other related instruc-
tions, must always be observed in order to avoid hazardous
situations and the risk of possible injury or damage.
These instructions are augmented by supplementary instruc-
tions (yellow), which contain additional information on the safe-
ty measures for electrical machines and devices. The latter
instructions thus augment all submitted instructions and all
other related instructions.
Furthermore, the pertinent national, local and plant-spe-
cific regulations and requirements should be kept in mind!
Special designs and other versions may vary in technical
details! If in doubt, be sure to contact the manufacturer, quot-
ing the type designation and serial number, or have mainte-
nance work done by one of SIEMENS Service Centres.
NOTE: Fig. 2 ... (Spare Parts) see Annex page 35-36
1 Description
1.1 Application
The motors are suitable for operation in dusty and damp environ-
ments. The insulation is tropicalized. If they are properly stored or
installed outdoors, special weatherproofing measures are not usu-
ally required.
Measuring-surface sound-pressure level at 50 Hz
(DIN EN 21 680 Part 1)
1LG4, 1LG6 approx. 51 to 76 dB(A)
1.2 Construction and mode of operation
The 1LG4 and 1LG6 motors are standardly self-ventilated with
own fans. In addition to that the 1LG motors are optionally either
without an own fan (such as fan motors with cooling by means of
a separate fan arranged on the shaft end) or with external coolling
(option G17). The 1PP4 and 1PP6 motors are equipped with own
cooling without any fan.
The feet on foot-mounted motors are cast integrally with the mo-
tor casing or they can be optionally bolted onto the casing (option
K11 / see fig. 2).
Rearranging the feet (e.g. for changing the position of the terminal
box) is possible for options K09, K10 and K11. The bores and
surfaces, necessary for this purpose, are already machined in a
corresponding way.
Where motors with brake are concerned (e.g. option G26), take
into consideration also the brake operating instructions!
These instructions are valid in addition to the operating instruc-
tions of the given motor type. They are not valid for motors of
EEx e series.
2

Operation

Before starting any work on the ma-
chine, be sure to isolate it from the
WARNING
power supply.
2.1 Transport, storage
The motors should always be lifted at both lifting eyes during
transport.
For lifting machine sets (such as
built-on gearboxes, fan units), al-
WARNING
ways use the lifting eyes or lifting
pegs provided! Machine sets may not
be lifted by suspending the individual machines! Check the
lifting capacity of the hoist!
Edition N14−0703
© Siemens AG 2000 All Rights Reserved
Siemens AG
ENGLISH
If, after delivery, the motors are stored for more than 3 years under
favourable conditions (kept in a dry place free from dust and vibra-
tion) prior to commissioning, the bearings should be regreased.
Under unfavourable conditions, this period is considerably shorter.
If necessary, the insulation resistance of the winding should be
checked, see Section 2.5.
2.2
After installation, screwed-in lifting eyes should either be re-
moved or tightened down.
In the case of motors with shaft end facing upwards or down-
wards, measures must be taken to ensure that no water can
penetrate into the upper bearing.
In the case of terminal boards with 6 terminals, the top part of the
terminal box can be turned through 4 x 90 degrees. For terminal
boards with 9 terminals, it can be turned through 180 degrees.
Quiet running
Stable foundations or mounting conditions, exact alignment of the
motors and a well-balanced transmission element are essential
for quiet vibration-free running. Before starting an assembly, the
contact surfaces for engine assembly should be cleaned and
checked for flatness. To avoid stress in the engine feet, the total
flatness of the contact surfaces of the base should not exceed
0.2 mm. The contact surfaces to be welded should be smoothed
by grinding to reach the flatness required. If sheets are used for
padding to set an elevation and avoid stress in the engine, they
should be made from rolled stock of an appropriate size. It may
also be necessary to balance the rotor with transfer element.
2.3
A suitable device should always be used for fitting and removing the
transmission elements (coupling halves, pulleys, pinions) (Fig. 7).
As standard, the rotors are dynamically balanced with the
half featherkey inserted.
The type of balance is marked on the drive end of the shaft (shaft
end face):
When fitting the transmission element, keep the type of
balance in mind!
Balance with half featherkey
Poor running characteristics can arise in the case of transmis-
sion elements having a length ratio of hub length l to length of shaft
end l
If necessary, re-balancing should be carried out, e.g. the part of
the featherkey T
and above the shaft surface should be cut back.
without transmission element attached, the featherkey
should be secured to prevent it being thrown out.
2.4
Check to see that system voltage and frequency agree with the
data given on the rating plate. Voltage or frequency deviations of
±5% (for 1ME6, frequency deviations of ±3%) from the rated
values are permitted without the necessity of derating the output.
Connection and arrangement of the terminal links must agree with
the diagram provided in the terminal box. Connect the earthing
conductor to the terminal with the marking
Wherever terminal clips are used (for example, to DIN 46282),
arrange the conductors so the clips are virtually level, i.e.
not tilted when tightened. This method of connection means
that the ends of single conductors must be bent in the
shape of a U or be fitted with a cable lug (see Fig. 3.1). This
DEUTSCH/ENGLISH/FRANCAIS/ESPANNOL/ITALIANO/SVENSKA/ČESKY/ÏÎ ÐÓÑÑÊÈ/NEDERLANDS
− 4 −

Installation

Balancing, transmission elements
(H = balanced with half featherkey)
(F = balanced with whole featherkey)
< 0.8 and running at speeds of > 1500 rev/min (see Fig. 8).
M
that protrudes from the transmission element
p
The usual measures should be tak-
WARNING en to guard transmission elements
from touch. If a motor is started up
Electrical connection
Bestell−Nr. / Order No. 35037000000057
.