17
Installation and quick start commissioning guide - Commander ID300/302
5511 en - 2017.06 / a
MECHANICAL INSTALLATION
2.5 - Coupling
Preparation
Turn the motor by hand before coupling to detect any
possible fault due to handling.
Remove any protection from the shaft extension.
Drain off any condensation water which may have
formed inside the motor by removing the plugs from the
drain holes.
Balancing
Rotating machines are balanced in accordance with
standard ISO 8821:
- Half-key when the shaft extension is marked H
- No key when the shaft extension is marked N.
- Full key when the shaft extension is marked F.
Any coupling element (pulley, coupling sleeve, slip-ring,
etc) must therefore be balanced accordingly. To find out
the motor balancing, refer to its nameplate.
Motor with 2 shaft extensions:
If the second shaft extension is not used,
in order to comply with the balancing
class, the key or half-key must be fixed firmly in the
keyway so that it is not thrown out during rotation
and must be protected against direct contact.
The motors are balanced with ½ key as standard unless
otherwise indicated. The coupling balancing therefore
needs to be adapted to the motor balancing, and the
coupling needs to be adapted to the length of the key
or the visible parts protruding from the key need to be
machined. A customized key can be used.
CAUTION
Failure to adhere to these recommendations
can lead to premature wear of the bearings and
invalidate the statutory warranty.
Coupling adapted to the
length of the key
Machining of visible parts
protruding from the key
CONFORMING MOUNTINGS
NON-CONFORMING MOUNTING
Non-machined open keyway.
Coupling not adapted to the length of the key
Part to be machined
√
√
X
Precautions
All measures must be taken to ensure protection
against the risks which arise when there are rotating
parts (coupling sleeve, pulley, belt etc).
If a motor is started up without a coupling
device having been fitted, carefully
immobilize the key in its location.
Beware of back-driving when the motor is switched off.
The appropriate precautions must be taken:
- For pumps, a non-return valve must be installed.
- For mechanical devices, install a backstop or a hol-
ding brake.
- etc.
Coupling methods
For further details on the different coupling me thods,
please refer to the installation and maintenance
ma nual of Leroy-Somer three phase induction motors
(ref.4850).
2.6 - Brake motor option specificities
•
Auto-return hand brake release (DLRA)
For brakes fitted with a lever, push it towards the
back of the brake motor. Whenever the brake has
been released, make sure that it is engaged once any
maintenance operations have been completed.
See dismantling/reassembly procedure in ref.5287 FFB
maintenance.
•
Manual brake release lock off system (DLM)
For brakes fitted with a DLM, proceed in the same
way as the DLRA to release the brake and then turn
(clockwise) the DLM handle in line with the DLRA to
lock the brake in the released position. When the brake
is next powered up, it is engaged automatically and the
brake is operational again.
See dismantling/reassembly procedure in ref.5287 FFB
maintenance.
Whenever the brake has been released,
make sure that it is engaged.
