Smart Logic Control Programming - Danfoss VLT AutomationDrive FC 300 Design Manual

FC 300 Design Guide

Smart Logic Control Programming

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A new useful facility in FC 302 is the Smart Logic Control (SLC).
In applications where a PLC is generating a simple sequence the SLC may take over
elementary tasks from the main control.
SLC is designed to act from event sent to or generated in the FC 302. The frequency
converter will then perform the pre-programmed action.
SLC Application Example
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One sequence 1:
Start – ramp up – run at reference speed 2 sec – ramp down and hold shaft until stop.
Set the ramping times in par. 3-41 and 3-42 to the wanted times
Set term 27 to No Operation (par. 5-12)
Set Preset reference 0 to first preset speed (par. 3-10 [0]) in percentage of Max
reference speed (par. 3-03). Ex.: 60%
Set preset reference 1 to second preset speed (par. 1-10 [1] Ex.: 0 % (zero).
Set the timer 0 for constant running speed in par. 13-20 [0]. Ex.: 2 sec.
Set Event 0 in par. 13-51 [0] to True [1]
Set Event 1 in par. 13-51 [1] to On Reference [4]
Set Event 2 in par. 13-51 [2] to Time Out 0 [30]
Set Event 3 in par. 13-51 [3] to False [0]
Set Action 0 in par. 13-52 [0] to Select preset 0 [10]
Set Action 1 in par. 13-52 [1] to Start Timer 0 [29]
Set Action 2 in par. 13-52 [2] to Select preset 1 [11]
Set Action 3 in par. 13-52 [3] to No Action [1]
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Application Examples
MG.33.B4.02 - VLT is a registered Danfoss trademark