MICROSPEED
32
REV 04/05
Usually,these calibrationsare made by the
factory and don’t need adjusting.
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 modify the proportional
gain by KV potentiometer and increase the value
of derivative by DER potentiometer.
The adjustment procedure must take place with the
load connected to the motor.
Connect a function generator with square wave (0,5 Hz
+/- 1V) to the input speed reference terminals.
Connect the probe of the memory oscilloscope channel
A to the tachogenerator signal. (The ground of the
probe must be connected to the GND of the drive).
Adjust counter-clockwise(ccw) the DER
potentiometer.
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 up to +/-2V.
Check the signals in the oscilloscope;the waveforms
should be as shown on the right.
6.7 Dynamic costant adjustment
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