55
Service Manual
Plus
MICROSPEED
Adjustments
Usually, these settings are made by the factory and
do not need to be changed.
Only re-tuning by KV and DER potentiometer is
required.
If high inertia loads are present (ratio 3:1 between load and
motor), it is necessary to set the proportional gain KV
potentiometer and the derivative gain DER potentiometer.
The adjustment procedure must take place with the load
connected to the motor.
Connect a square wave (0,5 hz, +/-1V) function generator to
the input speed reference terminals.
Connect the "channel A" probe of the memory oscilloscope
to the test point TEST1. (The ground of the probe must be
connected to the GND of the drive).
Adjust the DER and KV potentiometers.
Be sure that the loads motion doesnt create a safety risk.
Apply power to the drive and start it.
The load will begin to move alternatively; if possible increase
the generator amplitude to +/-2V.
Check the signals in the oscilloscope; the waveforms should
be as shown on the next page.
5.8 Dynamic Constant Adjustments
dinamiche
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