Lenze 8400 User Manual

8 Basic drive functions (MCK)
8.4 Basic settings
530
Lenze · 8400 HighLine · Reference manual · DMS 12.0 EN · 06/2017 · TD23
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8.4.1.1 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.
[8-8] Schematic diagram of gearbox ratio
• In the example shown in illustration [8-8] one revolution of the spindle is carried out at exactly
58,667 revolutions 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:
[8-9] 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:
[8-10] Calculation example (for 2-stage gearbox)
MM
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× 88 72×==
6336=
Gearbox factor denominator (C01202/2) z1 z3× 12 9×==
108=

Lenze 8400 Specifications

General

Category	DC Drives
Series	8400
Protection class	IP20
Control Type	Vector control
Communication	CANopen, PROFIBUS, Ethernet
Protection Features	Overcurrent, overvoltage, undervoltage, overtemperature
Input Voltage	AC 230/400/480 V