ESTAmat PFC-N
D.No.13157 - Rev. 02
Operating Instruction MV1181
Page 31 of 36
8.3 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)
