9.3 Problems with the Step recognition.
The controller is used in a system with rapid changes in load conditions and has problems with
the automatic step recognition
Solution:
To solve this problem, the step sizes must be entered by hand, and the step recognition must
be turned off.
Procedure:
Stop control.
Set item PFC to "OFF" in menu 100 (quick start menu).
switch off Step detection.
Set item 308 to "Yes" (step recognition off) in the expert menu.
enter step sizes.
Setting the nominal value of the capacitors connected at point 402 in the expert menu.
Check step type
For problems with the step detection, it may happen that the connected steps will be
stored by the controller incorrectly as "FIX-OFF". Therefore, the step type of each step
should be controlled under the menu item "403". All steps of the automatic control used,
must be use the step type "AUTO".
Features:
By switching off the automatic step recognition, a step failure or power loss is not reported.
To monitor the system anyway, it is appropriate to enable the control alarm to be alerted in
case of failure timely. (See alarm menu)
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