Siemens 1LA 1LB Mise En Service page 3

1 General information
Electric motors have dangerous voltage-carrying and rotating
components as well as surfaces that may become hot. All work
involved in the transport, connection, commissioning and regular
maintenance must be carried out by qualified, responsible
specialists (note VDE 0105; IEC 364). Improper behavior may result
in serious injury and damage to property. The applicable national,
local and works regulations and requirements must be complied
with.
2 Intended use
These motors are intended for commercial installations. They comply
with the harmonized standards of the EN60034 (VDE 0530) series.
Utilization in areas subject to explosion hazard is not permitted,
unless expressly intended for this purpose (see additional notes). In
certain special cases, for example, on use in non-commercial
installations, if requirements are more strict (e.g. protection against
contact with children's fingers), it is the responsibility of the customer
to ensure compliance on installing the equipment.
The motors are rated for ambient temperatures of -20°C to +40°C
(2KG: -10°C to +40°C) and site altitudes ≤ 1000 m above sea level.
Any contradictory information on the rating plate must be observed.
The conditions on site must correspond to all rating plate
specifications.
Low voltage motors are components for installation in machinery
in terms of the Machine directive 89/392/EEC. Commissioning
must not take place until it has been proved that the end product
conforms with this guideline (please note EN 60204-1).
3 Transport and storage
In the case of damage determined after delivery this must be
immediately reported to the transport company; if necessary the
plant is not to be put into commission. During transportation all the
available lifting eyes in the motor are to be used and be done up tight
when fitted! They are only designed and built for the weight of the
motor. Do not load additionally. If necessary use suitable adequately
dimensioned transporting means (for example, rope guides).
Remove existing shipping braces before commissioning; and reuse
for subsequent transport. If motors are stored, a dry, dust-free and
≤ 0.2 mm/s) environment is important (to avoid
low vibration (v
r m s
bearing standstill damage). On long-term storage, the regrease
interval of the bearings is reduced.
The state of the grease is to be checked when storing for more than
12 months. Should it be determined that the grease has become
contaminated (penetration of condensation water leads to changes in
the consistency of the grease) then the grease must be replaced.
Insulation resistance
The minimum insulation resistance of new, cleaned or repaired
windings should be 10 MΩ to earth
Check the insulation resistance before commissioning. For values
≤ 0.5 MΩ/kV design voltage dry the windings.
4 Installation
After installation, the screwed-in lifting eyes should either be screwed
in tightly or removed!
Ensure an even underlying surface, good foot or flange fixing and
precise alignment for direct coupling. It is important to ensure that
the mounting conditions do not cause resonance with the rotational
frequency and the doubled supply frequency. Turn the rotor by hand
and listen for any unusual grinding noises. Check the direction of
rotation in the decoupled state (note section 5).
Only mount or remove drive components (belt pulley, coupling, etc.)
using suitable tools (heat up), and cover to shield against contact.
Avoid unpermissible belt tensions (see catalogue and technical data).
Balance see shaft end face or the ratings plate (H = Half key
balancing, F = Full-key balancing, N = Balancing without feather key)
DIN IEC ISO 8821. Check the balance when fitting the drive element!
For use or storage outside, it is recommended that the motor is
installed under a sheltering object or fitted with an additional cover to
avoid the long-term effects of direct sunlight, rain, snow, ice or dust.
Where shaft ends face upwards water must not be allowed to enter
along the shaft.
Do not obstruct ventilation! Discharged air, also from neighboring
equipment, must not be sucked in again immediately.
© Siemens AG. All Rights Reserved
ENGLISH
5 Electrical connection
Work is only permitted to be carried out by qualified specialists on
the stationary motor, while disconnected and prevented from
being switched on again. This also applies for the auxiliary power
circuits (e.g. Anti-condensation heaters).
Check that the equipment is potential-free!
If the tolerance limits are exceeded that are specified in EN 60034,
part 1 / IEC 34-1 (voltage ± 5%, frequency ± 2%, shape of curve,
symmetry) the heating effect is increased and the electromagnetic
compatibility is affected. Please note the specifications on the rating
plate and the connection diagram in the terminal box.
Connections must be made in such a way as to ensure that a
permanently safe electrical connection is maintained (no protruding
wire ends); use the corresponding cable end pieces. Create a safe
earth continuity connection.
See Fig. 1 for the tightening torques for terminal board connections.
Clearances in air between bare live parts themselves and between
bare live parts and earth must be ≥ 5,5 mm (U
It must be ensured that the terminal box does not contain foreign
bodies, dirt or humidity. Seal any unused cable entry openings
against dust and water.
Inlets in the terminal box (see DIN 42925), other open inlets must be
sealed with an O-ring or a suitable flat gasket, and the terminal box
itself must be sealed with the original seal so that it is dustproof and
watertight.
See Fig. 2.1 for the tightening torques for cable glands and Fig. 3 for
other screws.
Secure the feather key on test operation without drive components.
For motors with brakes, check that the brakes are operating perfectly
before commissioning.
6 Operation
Vibration levels of v
(P > 15 kW) are quite acceptable in the coupled state.
N
If deviations from normal operation occur - e.g. increased
temperatures, noises, vibration - the motor should be switched off
in the event of doubt. Determine the causes and contact the
manufacturer if necessary. Do not disconnect protective equipment,
even under test operation.
Under dirty operating conditions, clean the air channels regularly.
Open any closed condensate water holes from time to time!
Irrespective of the number of operating hours, a motor which is in
use should have its bearing replaced every 3 years because of the
reduction in effectiveness of the grease.
For motors without regreasing points, bearings and/or the grease
are to be replaced in accordance with the manufacturer's instructions
at least every three years.
For motors with regreasing points, the instructions on the
lubrication data plate must be observed! Regreasing should be
performed on running motors!
Damage will be caused when operating at lower than minimum radial
stress in the case of motors with cylindrical roller bearings for higher
radial load. The radial stress is to be minimum 30 % of the permissible
radial stress in operation (see catalogue).
In the case of motors with separate ventilation, the separately-
driven fan must be switched on throughout motor operation.
7 Further information
Information about any additional equipment, such as the different
manufacturers' instructions for cable connections including sealing
elements, shall be observed. More information is available in our
detailed operating and maintenance instructions. On request you will
be sent further details if you state the type and machine number or,
you can find these under
These notes on safety and commissioning must be retained for future
reference!
10/2006, Order No. 5 610 70000 38 006 b
≤ 690 V) .
rated
≤ 3.5 mm/s (P ≤ 15 kW) or v
r m s N
www.siemens.com/motors.
EN
≤ 4.5 mm/s
r m s
3