Parker EME
Setting up Compax3
192-121102 N04 June 2008 99
With the aid of the jog+/- function, the axis can be moved.
The setpoint generator- (681.4 or 681.2) and the actual speed (681.9 or 681.14)
must have the same sign (shown in the roll mode of the oscilloscope).
If this is not the case, there are two possible causes:
Wrong orientation of the position feedback system: The actual position can be
displayed in order to check this. Resolve by changing the feedback direction in
the configuration wizard or in the C3HydraulicsManager.
Incorrect wiring of the valves. The polarity can either be changed by changing the
wiring at the clamp or by inverting the output (Optimization Output Chain X
Inversion).
Compensation of non-linearities of the distance
Before the controller alignment, the non-linear components of the path should be
compensated with the aid of the Output Conditioning Chains. This helps to achieve
an improvement of the system behavior. There are several possibilities:
a) Pressure compensation
If pressure sensors are available, those can be used to compensate the differtial
pressure. This makes the control more robust with respect to variations in the
system pressure or the load.
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