December 2001 Commissioning 6 – 503
7
77
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
77
7 Adjust the proportional (P) component and the integral-action (I) component
of the speed controller at the servo amplifier
Determining the
acceleration
After adjusting the servo amplifier, you can determine from the step response
the maximum possible acceleration:
a: Acceleration [m/s
2
]
F
max
: Maximum machining feed rate (MP1010.x) [mm/min]
t
an
: Rise time [s]
7
77
7 Enter the maximum possible acceleration in MP1060.x.
Optimum
Gain too large
Gain too small
a
F
max
t
an
60 000⋅
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