Lenze DSD - Manual (Page 338)

11 Drive Dimensioning
11.4 Lenze gearbox selection
338
Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
11.4.4 M-n characteristic
The characteristic shows the required speed and torque at the output end of the gearbox and the
corresponding limit values:
[11-13] Gearbox: M-n characteristic (output)
Description
 Max. permissible torque
• This torque must not be exceeded in any case, even for a short time. The service life here is only < 10 3 load
cycles.
 Permissible torque at alternating load
• The permissible torque depends on the alternating load of the entered load.
 Alternating load and repeated load cycle with regard to toothed gearboxes ( 334)
 Equivalent torque
• The equivalent torque presents an equivalent variable for sporadically occurring processes with respect
to the strength of the gearbox. This variable is subordinate for cyclic processes.
 Continuous rated curve
• Characteristic curve for the speed which the gearbox can transmit continuously (in the case of a defined
torque) without overheating.
• The continuous characteristic is affected by the ambient conditions, the mounting position and the av-
erage daily operating time. The definition of the continuous characteristic corresponds to the operating
mode S1 and is based on the IEC 60034-1.
 Requirement of the application
• The range of the entire characteristic has to be within 2 × M
per,out
which is defined from the static
strength and the short-time permissible max. speed.
• Torques above the continuous torque M
per,out
are only permissible sporadically and not for continuous
cyclic operation.
 Performance features
• The performance features can also be found in the selection table.
 Selection table ( 341)