Reference Signal (Step/Dir); Electronic Gear - CS-Lab SimDrive M4-H075K User Manual

5.4.7 Reference signal (STEP/DIR)

Parameter name
Invert dir
Sometimes the connected motor have a high resolution encoder - e.g. 40000
5.4.8 Electronic gearing
controller is not able to provide STEP signal with enough frequency to fully exploit motor revs range.
As an example: motor with 40000
revs.
Now we can easily calculate max. frequency of STEP signal:
max. frequency STEP signal. We would just only get 187
Let's assume that we connect the drive to CSMIO/IP-M motion controller which provides 125kHz
get 3750
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Here now the electronic gear comes to the rescue. Thanks to it we can set a multiplier x20 and we
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. The electronic gear function is set by two parameters: X and Y.
Set motor's position is expressed by the formula:
In our example we enter X=20, and Y=1. We are going to multiply the input signal by 20. Obviously
using this function we can divide the input signal if there is such a need. However it is usually used
for multiplying.
To keep the settings saved after power is off - on the toolbar press
The input signal multiplying (as shown in the example above) has negative influence on motor's
culture of work and on positioning accuracy. According to this fact we do not recommend the
multiplying use in applications which require great motion smoothness and precision.
In such situations we need to use CNC controller that is able to provide STEP signal with enough
frequency – e.g. CSMIO/IP-S which generates 4MHz max frequency STEP signal.
32
Description
Change of motor revs direction. The parameter affects only
external STEP/DIR signal control.
encoder has 3000
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5000 = 83,33
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83,33 × 40000 = 3,33
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nominal revs and 5000
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icon after settings change.
simDrive™ - AC Servo Drive User Guide
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and a CNC
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maximal