Lenze DSD - Manual (Page 452)

18 Drive dimensioning messages
18.4 Lenze gearbox
452
Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
18.4.6 Utilisation of the clutch >100 % regarding the speed
18.4.7 Thermal overload when mineral gearbox oil is used
18.4.8 Utilisation is xxx %, regarding the max. torque
Warning!
The utilisation of the clutch (motor-gearbox) relative to the speed is xxx %. Thus the limit value of 100 %
is exceeded.
Cause Effects Possible remedies
The medium motor speed is too high. • The clutch between motor and
gearbox is overused.
• The clutch is destroyed after a
short time!
• Select a different gearbox.
• Optimise application.
 Check of the torque load ( 332)
Note!
When mineral oil is used, the gearbox will be thermally overloaded.
Use Viton shaft sealing rings and use synthetic oil!
Cause Effects Possible remedies
Mineral oil is less temperature-sta-
ble, less powerful and has a smaller
viscosity range than synthetic oil.
Use of mineral gearbox oil:
• The gearbox is too hot.
• The oil pressure increases.
• The shaft sealing rings wear out.
• The service life of the gearbox oil
is considerably reduced.
• Use synthetic gearbox oil.
• When synthetic gearboxes are
used, Viton shaft sealing rings
have to be used.
 Thermal utilisation ( 339)
Note!
The utilisation of the gearbox is xxx %, regarding the max. torque.
Thus the limit value of 100 % is exceeded.
The gearbox is overloaded for a short time. The increased wear is within the permissible range.
The utilisation is xxx %, regarding the fatique strength.
Cause Effects Possible remedies
The gearbox is not rated for endur-
ance strength and will be overloaded
after the simplified fatigue strength
calculation.
• The service life of the gearbox is
reduced.
• The increased wear is within the
permissible range.
Select a different gearbox.