Technical description 8100_ A
37
Manual adjustment
If for technical reasons, automatie adjustment in no-load operation is not possible or
sufficiently precise, you can enter the adjustment factor by hand following
measurement of the variable to be controlled:
Select a configuration with closed-Ioop control under C005.
The set-value must be least 10% of the maximum field frequency.
Enable the controller and wait for the acceleration time to elapse.
Increase the influence of the PI-controller with C074 to the maximum possible
slip (stall slip, approx. 10%)
Gain (C070) and response time (C071) should be in factory-setting.
If the drive oscillates, reduce the gain (C070) until the drive runs smoothly.
Measure the motor shaft speed using a speed meter.
Calculate the value for the encoder adjustment and adjust under C027:
Actual speed
Encoder adjustment (C027)
* old value C027
desired speed
Dynamic adjustment (C070. C071)
This adjustment is necessary following both automatie and manual adjustment. By
means of the dynamic adjustment the PI-controller is adapted to different inertias:
Increase the gain of the PI-controller with C070 until the drive starts to
oscillate. Then, reduce this value by approx. 10%
If no oscillation occurs with a gain of about 10, halve the setting time in code
C071 and repeat the gain adjustment procedure.
If the system oscillates throughout the entire range, increase the setting time
(C071) until the drive runs smoothly.
Save the settings with C003.
Additional functions
For special applications, some auxiliary functions for the PI controller can be used.
Actual speed value of the PIcontroller: see C051
Monitor signals of the PIcontroller: see C111
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