Lenze 8400 TopLine - Manual (Page 584)

9 Basic drive functions (MCK)
9.4 Basic settings
584
Lenze · 8400 TopLine · Reference manual · DMS 6.0 EN · 06/2014 · TD05/TD14
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9.4.1.1 Gearbox ratio
The gearbox ratio indicates the number of revolutions of the motor axis it takes for exactly one
revolution of the load axis (e.g. spindle or drive roll) to take place.
[9-7] Schematic diagram of gearbox ratio
• In the example shown in the illustration [9-7] , the spindle rotates exactly once for every
58,667 rotations of the motor axis.
Specification of the gearbox ratio
• The gearbox ratio is to be defined in the form of a quotient (numerator/denominator); the data
required can be found in the technical data for the gearbox:
[9-8] Example: Technical data relating to the gearbox (from gearbox catalogue)

Tip!
In order to specify the gearbox ratio exactly, use the number of teeth indicated on the data
sheet or in the catalogue, if possible, instead of the information on the nameplate (see
following calculation).
Example calculation on the basis of the technical gearbox data:
[9-9] Calculation example (for 2-stage gearbox)
M M
i = 58.667
L
EXTERTAL / Germany
GFL05-2M HCR 080-32 004 B
295 Nm
24/min (50Hz)
i = 58.667
GT/40000027 CLP 460 1196
00500038
GFL 05
i
58.667
z3
9
z1
12 z2
88 z4
72
M M
z1 z3
z4
z2
Gearbox factor numerator (C01202/1) z2 z4 Ч 88 72 Ч = =
6336
=
Gearbox factor denominator (C01202/2) z1 z3 Ч 12 9 Ч
= =
108
=