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9. Programmer examples
Example: Rotation speed of a machine shaft
There are 4 sprockets on one machine shaft. Applied in an angle of 90° to each other and to the
rotation speed measurement. The sprockets are collected via a proximity switch and evaluated by
the frequency device, which shall display the rotation speed in U/min. 0…3600 U/min is preset as
rotation speed range of the machine.
Parameter
Settings
Description
As the input frequency is known, the device does not need to
be applied to the measuring section.
The final frequency is in the range of 100.00 to 999.99 Hz.
A rotation speed of 3600 shall be displayed as final value.
The final frequency for display value 3600 is 24.00 Hz.
Based on the default settings of the device, following parameters need to be changed:
Calculation of the input frequency
Number of sprockets
= 4
Rotation speed
= 3600 U/min
x
Number of sprockets
Final frequency [Hz] =
Final rotation speed [ ]
U
min
60
[ ]
x 1
U
s
min
x 4 = 240
Hz
Final frequency [Hz] =
3600
U
min
60 x 1
U
s
min
Setting up the device
