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Determining the
acceleration
December 2001
7 7 7 7
Perform a coarse velocity adjustment:
• Set MP1010.x (rapid traverse) and MP1050.x (analog voltage at rapid
traverse).
• With the internal oscilloscope functions, output the nominal value step at
the height for rapid traverse.
• Record U ANALOG and check the voltage.
• Use a tachometer to measure the rotational speed of the motor and a
tacho-potentiometer at the servo amplifier to adjust the nominal speed for
rapid traverse.
• Connect an oscilloscope to the tachometer of the motor.
• Test the step response on the tachometer during the step output.
7 7 7 7
Adjust the proportional (P) component and the integral-action (I) component
of the speed controller at the servo amplifier
Optimum
After adjusting the servo amplifier, you can determine from the step response
the maximum possible acceleration:
F
max
----------------------------- -
a
=
⋅
t
60 000
an
2
a: Acceleration [m/s
]
F
: Maximum machining feed rate (MP1010.x) [mm/min]
max
t
: Rise time [s]
an
7 7 7 7
Enter the maximum possible acceleration in MP1060.x.
Commissioning
Gain too large
Gain too small
6 – 503
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