Analog Ramp - Siemens LOGO! Manual

4.4.27

Analog Ramp

Short description
The Analog Ramp instruction allows the output to be changed from the current level to the
selected level at a specified rate.
Symbol in LOGO!
LOGO!
Manual, 10/2017, A5E01248535-AA
Wiring Description
Input En A change in the status from 0 to 1 at input En (Ena-
ble) 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 (Decel-
erated 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 100ms and then the current level is set to Offset
"B", which makes output AQ equal to 0.
LOGO! functions
4.4 Special functions list - SF
197