User Manual

LOGO! functions
4.4 Special functions list - SF
LOGO!
216 Manual, 06/2014, A5E33039675
4.4.29
Analog ramp
Short description
This function allows the output to be changed from the current level to the selected level at a
specified rate.
Symbol in LOGO!
Wiring
Description
Input En A change in the status from 0 to 1 at input En
(Enable) applies the start/stop level (Offset "B" +
StSp) to the output for 100 ms and starts the ramp
operation to the selected level.
A change in the status from 1 to 0 immediately sets
the current level to Offset "B", which makes output
AQ equal to 0.
Input Sel SeI = 0: level 1 is selected.
SeI = 1: level 2 is selected.
A change in status of Sel causes the current level to
start changing to the selected level at the specified
rate.
Input St A change in the status from 0 to 1 at input St
(Decelerated Stop) causes the current level to
decrease at a constant rate until the start/stop level
(Offset "B" + StSp) is reached. The start/stop level is
maintained for 100 ms and then the current level is
set to Offset "B", which makes output AQ equal to 0.