Lenze DSD - Manual (Page 80)

7 Applications
7.3 Belt drive, rotating
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Lenze · Drive Solution Designer · Manual · DMS 4.2 EN · 12/2013 · TD23
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7.3.4 Data for the entry
7.3.4.1 Belt pulley diameter
7.3.4.2 Mass of the slide
7.3.4.3 Angle of tilt
7.3.4.4 Transmission efficiency of toothed belt
7.3.4.5 Mass of toothed belts
Symbol Description
d
Cog
Belt pulley diameter
• The belt pulley is mounted at the end of the output shaft of the motor or gearbox.
• The diameter can be calculated by the pitch and the number of teeth (in the case of a toothed
belt).
• Value can be entered directly or calculated using a diameter calculator.
"Pinion diameter" calculator ( 412)
Symbol Description
m
aux
Mass of carriage
• The mass is used in the calculation for the moment of inertia
• The mass of the payload is entered when the motion profile is created.
• By means of the mass calculator, an alternative value can be calculated.
Mass calculator ( 405)
Symbol Description
β Angle of tilt (gradient)
• The value can be entered in degrees or as a percentage.
Symbol Description
η
Blt
Efficiency of the toothed belt with initial stress and maximum stationary operating point.
• Since the torque loss of a belt is not proportional to its load, i. e. it is not constant throughout
the entire operating range, however, often only one efficiency factor is known, it is assumed
that the value applies to maximum steady-state operation. The losses that can be calculated
for this, in the worst case occur as a constant torque loss, so that they are taken into consid-
eration in the DSD.
• The losses of the guide can be covered separately with the specific travelling resistance.
Symbol Description
m
Blt
Mass of the toothed belt
• Can be disregarded in most applications; only in the case of a long traverse path the mass
may have a crucial impact.
• The mass of the belt is used in the calculation of the inertial moment.
• The mass of the payload is entered when the motion profile is created.
• The mass can be estimated by means of the mass calculator.
Mass calculator ( 405)