U600 User’s Guide
AerTune
Version 1.4
Aerotech, Inc.
5-37
Figure 5-24.
Oscilloscope Showing Current Feedback for One Move
Third, if necessary, the user may have to fine-tune the Input pot if unable to achieve
maximum speed for the motor. To fine-tune the Input pot, perform the following
procedure.
a.
Connect the Oscilloscope to TP5 (velocity command) and TP4
(common) on the amplifier.
b.
Set the Distance and Speed entry fields to represent a typical move at
1/2 of the maximum speed.
c.
Press the Auto button and allow the axis to cycle.
d.
While the axis is moving, adjust the Input pot so that when the motor is
moving at 1/2 speed the Velocity Command on TP5 is 4 volts.
e.
Press the Halt button when completed.
8.
Finish, by adjusting the Position Loop (PGain) where the main concern is to
strive for a smooth variation in the position error, and to have the position error
reach zero at or near the same time the Velocity Command ends. After repeating
the process of starting and stopping the axis and adjusting PGain, the axis
velocity should track the commanded velocity fairly well and the position error
should be at zero at the end of the commanded move. Increasing the PGain will
lower the axis settling time.
If the PGain parameter is too high, the motor will oscillate.
Without Clamping by Current Limit
Pot, the current would be here.
Adjusting the Current Limit Pot allows
you to clamp the current to a specific
value.
Содержание UNIDEX 600 Series
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