Renova isomatic, User Manual

Page: 10 / 28

10
Increase the tension in the machine
Esc
Return to menu page
OK + Esc
Alarm acknowledgement
OK +
Setting of tension set point
OK + Esc +
Low calibration
OK + Esc +
High calibration
+
Setting of tension to SPS value (SPS=Set point in Manual mode)
AUTOMATIC
By selecting the automatic mode the system automatically corrects the current tension trying to get it to the setpoint
values. In Automatic mode the controller modulates the output to the brake according to the PID parameters set. (See
Picture 3).
The display looks like the following picture:
By pressing or keys (arrow keys) it is possible to change the tension set point.
By pressing Esc it returns to the menu from which it entered in Automatic mode.
In case an alarm is active, the acknowledgement (shutdown) of the alarm occurs by simultaneously pressing the OK
and Esc keys.
The algorithm for the automatic control of the tension is a PID algorithm. The basic concepts of the control algorithm
can be understood looking at the following drawings (Dwg. 3 and 4):