Siemens SIMOTICS XP 1MB1 series - Mechanical Faults

Operation
8.6 faults
1LA5/6/7/9, 1LG4/6, 1MA6/7, 1MB..1/2/3/4/5 - SH 63 ... 355
108 Operating Instructions, 06/2018, A5E44455710A
8.6.3
Mechanical faults
Table 8- 2 Mechanical faults
↓ Grinding noise
↓ Radial vibrations
↓ Axial vibrations
Possible causes of faults
Remedial measures
X Rotating parts grind Establish the cause and realign the parts.
X Stator or coupling not balanced.
Disconnect the stator or coupling and rebalance.
If the machine has two shaft ends, and a transmission element is
only fitted to one end, secure the fitted key at the other end to
prevent it from being thrown out. If the rotor has balance type "H"
(standard type), the fitted key must be cut back to roughly half of
its length.
X
Rotor out of true, shaft bent
Consult the manufacturing plant.
X
X
Poor alignment
Align the machine set; check the coupling.
(1)
X
Coupled machine not balanced
Rebalance the coupled machine.
X
Shocks from coupled machine
Investigate the coupled machine.
X
X
Uneven running of gear unit
Fix the gearing.
X X Resonance of the overall system com-
prising motor and foundation
Stabilize the foundation following consultation.
X X Changes in foundation Establish the cause of the changes and eliminate them if neces-
sary; realign the machine.
(1)
Take any changes into account when warming up the machine.