DIGIVEX Little Drive Servoamplifier
67
PVD 3530 GB 01/2005
Proportional gain adjustment
Initial status
Switch to proportional gain P alone.
Filtering frequency fc to maximum (800 Hz) and low gain.
System ready to run, no predictor.
Proportional gain and filter frequency are adjusted simultaneously. If, by increasing proportional
gain, the system starts to resonate, the resonance must be eliminated by reducing the filter
frequency, then increasing P, etc. until a compromise is found.
Maximum recommended for P.
There is a maximum advisable proportional gain, depending on the drive rating, and
corresponding to maximum current oscillation.
RATING
P In mA/ rpm
2/4
35
4/8
75
7,5/15
150
N.B. This gain may be exceeded under certain circumstances. Please ask for details.
Generate a speed set point scale (0.5 to 1 V).
Use the oscilloscope function to display
Channel 1
⇒
the input set point
Channel 2
⇒
the speed measurement
Trigger on channel 1 at 5 or 10 percent of N max, leading edge.
Increase gain P
The stimulus is excited on line. The response is collected at one scale of speed set point.
This manual was downloaded on www.sdsdrives.com
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