Siemens SINAMICS G115D Operating Instructions Manual page 513

Table 12-41
Faults
Unusual noise on
the gearbox.
Unusual noise
from the drive unit.
Unusual motor
noise.
Oil escapes.
Oil leak at the gear‐
box vent
SINAMICS G115D Wall Mounted distributed drive
Operating Instructions, 07/2023, FW V4.7 SP14, A5E52808211A AA
Faults, causes and remedies
Causes
Oil level too low.
Foreign bodies in the oil (irregular
noise).
Excessive bearing play and / or bearing
defective.
Defective gearing.
Fastening bolts loose.
Excessive external load on the drive in‐
put and output.
Transport damage.
Damage due to blockage during com‐
missioning.
Drive unit bearing not lubricated (motor
size 160 and higher).
Excessive bearing play and / or bearing
defective.
Fastening bolts loose.
Excessive bearing play and / or bearing
defective.
Motor brake is rubbing.
Converter parameterization.
Incorrect oil level for the mounting posi‐
tion being used.
Gearbox leaks.
Overpressure due to lack of venting.
Overpressure due to soiled venting.
Shaft sealing rings defective.
Cover / flange bolts loose.
Surface sealing defective (e.g. on cover,
flange).
Damage in transit (e.g. hairline cracks). Check the gearbox for damage in transit.
Incorrect oil level for the mounting posi‐
tion used and / or incorrect venting po‐
sition.
Frequent cold starts during which the oil
foams up.
Additional information on the SIMOGEAR geared motor
Remedy
Check the oil level (Page 514).
Checking the oil quality (Page 517).
Cleaning the geared motor (Page 437).
General safety instructions (Page 514).
Check the bearing and replace if neces‐
sary.
Check the gearing and replace if neces‐
sary.
Checking the tightness of fastening
bolts (Page 526).
Check the load against rated data (you
might need to correct the belt tension,
for example).
Check the gearbox for damage in transit.
Call Technical Support.
Regrease the bearing (Page 521).
Check the bearing and replace if neces‐
sary.
Checking the tightness of fastening
bolts (Page 526).
Check the bearing and replace if neces‐
sary.
Check air gap and adjust if necessary.
Correct the parameterization.
Check the mounting position
(Page 527) and the oil level
(Page 514).
Checking the gearbox for leaks
(Page 525).
Mount the venting as appropriate for
the mounting position (Page 527).
Clean the venting (Page 525).
Replace the shaft sealing rings.
Checking the tightness of fastening
bolts (Page 526). Continue to monitor
the gearbox.
Reseal.
Check the venting position, mounting
position (Page 527) and the oil level
(Page 514).
Call Technical Support.
12.3 Specific data gearbox
511