Operating Manual CMGZ 622
34
13
Setup of a Line Drive Controller
13.1
Configuring the basic parameters
For a line drive controller the following parameters must be set according to your
application:
Parameters CMGZ622
Control mode
Line drive
Line speed overlay
For the time being set to
No
PID configuration
For the time being set to
PI
; if
PID
is required, refer to „9.9
Additional settings“
Output limit
According to the signal level of the drive used
Output configuration
±10V or according to the drive used
Position of line drive
According to machine configuration (before or after sensor)
Ramp reference
Reset to default = 1.0 s
Reference source
According to machine configuration (
internal
or
external
)
Scale ref.input 1
(Only if reference potentiometer is used)
Scale ref.input 2
(Only if reference potentiometer is used)
Note
There is one additional analog input for external reference, diameter or line speed
signal. You cannot run the controller with external reference and line speed overlay
the same time. You must decide which signal you want to process with the controller
and then set the parameters
Reference source
and
Line speed overlay
accordingly.
Now continue with section „9.5 Inputting the reference value“. If the general setup is
done, add the special features below according to your requirements.
13.2
Setup of line speed overlay
If the controller is operated with line speed overlay, a line speed signal is used to build
the output value. The controller uses the signal depending on the diameter proportion
between tachometer roller and drive roller. The hereby calculated value is taken and
the percentage quota of the PID controller is overplayed. The sum will be the output
value. Therefore the controller is only responsible for the material tension variations.
This will increase control loop stability.
The parameters for line speed overlay may be calculated. But often the referring
values of the machine are unknown. Therefore the experimental setup of line speed
overlay is listed below:
Transmission of the line speed signal
To transmit the actual line speed to the electronic unit, an analogue signal 0...10V
(from a tachometer generator or other source) is fed to the analogue input (refer to
wiring diagram).
