Siemens 1LA6 Instrucciones Para El Manejo página 6

ENGLISH
Fitting new bearings, type of grease
Under normal operating conditions, with horizontally mounted motors
and the following coolant temperatures and motor speeds, the
bearings should be changed at the intervals [h] specified below:
... 1800 rev/min approx. 40,000 h approx. 20,000 h
... 3600 rev/min approx. 20,000 h approx. 10,000 h
NOTE: The permissible axial and transverse forces (see Catalog)
must not be exceeded!
Irrespective of the number of operating hours, the rolling-contact
bearing should be renewed every 3 years because of grease ageing.
In the case of motors operating under special conditions, such as
a vertical motor position, heavy vibration, sudden load changes,
frequent reversing operation, etc., the bearing should be changed at
considerably more frequent intervals than the operating hours stated
above.
The motors feature deep-groove ball bearings which are provided with
cover plates (2ZC3 version). The cover plate material should withstand
temperatures from -30 °C to +150 °C, e.g. polyacryl-rubber (ACM).
Type of grease for standard machines: UNIREX N3 (Esso); synthetic
greases must conform to DIN 51825-K3N.
Special greases should be indicated on the rating plate or on a
separate plate.
Dismantle the motor to the extent necessary. Pull off the rolling-
contact bearing with a suitable device (see Fig. 7). Clean the journal!
Heat the rolling-contact bearing evenly to about 80-100 °C and press
on. Heavy blows (such as with a hammer, etc.) should be avoided.
Any worn sealing elements (such as the shaft sealing ring, etc.)
should also be renewed.
If springless radial shaft sealing rings are used, the replacement
sealing rings must also be of the springless type.
Regreasing device
In the case of motors with a regreasing device, take note of the
information given on the rating plate or the lubrication instruction plate!
The bearings should be relubricated while the motor is running!
4 1MA and 1MF motors with
increased EExe protection
The information in italics is intended to serve as supplementary or
special information on these types of motors.
The increased hazards in areas which are exposed to the danger of
explosion or firedamp necessitate that the general notes on safety and
commissioning are carefully complied with.
Electrical machines which are protected against explosion are in line
with the standards EN 60034 (VDE 0530) and EN 50014 to 50020. It
is permitted to use these machines in areas exposed to the danger of
explosion only in accordance with the stipulations of the responsible
authority which also determines whether a danger of explosion exists
(division into zones).
To be observed in the case of certification additionally
marked with an X are the special stipulations in the EC sample
test certificate.
The cable entries must be approved for the explosion-endangered
area and be secured to prevent accidental loosening. Unused openings
are to be closed with approved plugs.
In the case of 1MA-motors, a cover to prevent foreign bodies from
falling into the motor-fan cowl (see DIN EN 50014/50019) is to
be located on the end of the shaft at the top, e.g. types of
construction IMV3, IMV6 and IMV19 (see Fig. 1). This cover
must not hinder cooling of the motor by its fan.
Should no details be given to the contrary in respect of mode of
operation and tolerances in the EC sample test certificate or on the
rating plate the electric motors have been designed and built for
continuous operation and infrequent repeated start-up with no
excessive heating up when starting. The motors are only to be used
for the given mode of operation shown on the rating plate.
Section A in EN 60034-1 (VDE 0530, Part 1) - voltage + 5 %, frequency
+ 2 %, waveform, power-system symmetry - must be complied with in
order to ensure that any increase in temperature remains within the
permitted limits. Greater deviations from the rated values can lead to
non-permissible increases in the temperature of the machine and
must be indicated on the rating plate.
The temperature class of the motor given on the rating plate must
agree with the temperature class of the inflammable gas which may
occur.
6
25°C 40°C
The overcurrent protection facility with current dependent
delayed triggering is to be selected so that the triggering time
to be taken from the switch characteristic curve for the
protected motor ratio I / I
A
heating up time t of the motors. The ratio I
E
heating up time t are to be found on the rating plate. The
E
protective device is to be set to the rated current. In the case of delta-
connected windings, the trips are to be connected in series with the
winding phases and set to 0.58 times the rated current. If such a circuit
is not possible, additional protective measures are necessary (e.g.
thermal machine protection).
If the rotor is blocked, the protection device must switch off the
machine within the time t indicated for the respective temperature
E
class.
Electrical motors for heavy start up (running up time > 1.7 x tE-time)
are to be protected by a start monitoring system in accordance with
the details given in the EC sample type test certificate.
Thermal machine protection by means of direct temperature
monitoring of the winding is permissible if this is certified and
indicated on the rating plate.
Separate, common interlocked protection devices are required for
each speed stage for pole reversible motors. To be recommended
are devices with EC sample type test certificate.
In Germany, please refer to DIN 57165/VDE 0165 and ElexV when
erecting electrical installations in areas exposed to the danger
of explosion. In countries other than Germany, the relevant
national regulations are to be complied with in each case!
Operation on a converter must be certified. The separate
instructions of the manufacturer must be complied with. The motors,
converters and protection devices are to be marked as pertinent to
each other in the case of the EExe ignition protection mode and the
approved operating data is to be laid down in the general EC sample
type test certificate (VDE 0165).
The connector cable installed between the inverter and the electrical
device can adversely affect the levels of the voltage peaks produced
by the inverter. . The maximum value of the voltage peaks at the
terminals in the system Inverter-Cable-Eletrical Device must not
exceed the value stated in the manufacturer's special notes.
Furthermore, the EMC Guideline must be observed.
Repairs must be performed in Siemens Workshops or inspected
and approved by a state-certified Expert. The repairs must be
indicated by an additional repair plate.
As to Spare parts, with the exception of standardised, commercially
available equivalent parts (e.g. roller bearings), only original
spare parts (see parts list) may be used; this applies in particular
also with respect to gaskets and connectors.
must not be greater than the
N
/ I as well as the
A N
Siemens AG