Siemens SIMOTICS S-1FG1 Operating Instructions Manual page 139

No. Cause of fault
S Motor brake is not released
GA Incorrect oil level for the mounting posi-
tion used and / or incorrect venting posi-
tion.
GB Foreign bodies in oil (irregular noise).
GC Excessive bearing play and/or bearing
defective.
GD Defective gearing.
GE Fastening bolts loose.
GH Damage due to blockage during commis-
sioning.
GI Gearbox leaks.
GK Overpressure due to lack of venting.
GL Overpressure due to soiled venting.
GM Shaft sealing rings defective.
GN Cover / flange bolts loose.
GO Surface sealing defective (e.g. on cover,
flange).
GP Frequent cold starts during which the oil
foams up.
GR Incorrect oil used (e.g. incorrect viscosi-
ty).
GS Oil is too old.
GT Force flow interrupted by breakage in
gearbox.
GU Positive connection disrupted by over-
load.
GV Flexible elements worn (e.g. on cou-
plings).
If the fault still cannot be resolved after taking the measures stated above, please contact the
manufacturer or the Siemens Service Center.
SIMOTICS S-1FG1 servo geared motor
Operating Instructions, 07/2019, A5E47360747B AA
Check circuit/connection of brake
Check the mounting position (Page 47) and the oil level (Page 145).
Checking the oil quality (Page 147), Changing oil (Page 148)
Check the bearing and replace if necessary.
Check the gearing and replace if necessary.
Tighten the screws, Thread sizes and tightening torques for fastening
bolts (Page 144)
Call Technical Support.
Checking the gearbox for leaks (Page 156). Seal the gearbox
Mount the venting as appropriate for the mounting position (Page 47).
Replacing the vent valve (Page 158)
Replace the shaft sealing rings.
Tighten the screws (Page 144). Continue to monitor the gearbox.
Reseal.
Call Technical Support.
Check the oil quality, change the oil (Page 156) and flush the gearbox
(Page 149)
Check the date of last oil change. If required, change the oil (Page 148).
Call Technical Support.
Call Technical Support.
Replace flexible elements.
How to remedy
Faults
137