Operating Manual CMGZ432
21
9.8 Automatic operation
State „Controller disabled“
After power on, the controller is disabled. Its output value is 0V, 0mA or 4mA
(depending on setting of parameter
Output config.
)
Enable controller
The controller will be enabled by digital input „Controller enabled“ or by serial interface.
The controller then begins to tighten the material with the speed given by parameter
Start
speed
until an initial
material tension
(parameter
Start limit
) is reached. Then, the
material
tension
is increased to the reference value resp. the pilot control value (depending on
parameter
Pilot control
; refer to „11. Parametrization“) and the digital output „Controller
ok“ will be activated.
Change of control parameters while automatic operation
The control parameters
P0...P3 / I0...I3 / D0...D3, Influence of PI
and
PID-configuration
can be changed while the controller being enabled. Setting is done as written in „11.3
Description of the parameters“. The new values are taken for the control loop when
parameter mode is quit.
Change of reference value while automatic operation
The reference value can be changed while automatic operation as described under „9.5
Inputting the reference value“.
Disable controller
To terminate controlling after stopping the machine, the controller has to be disabled. If
enabling was done by interface, disabling must be done also by interface. After disabling
the controller, the output value will be set to zero immediately and the digital output
„Controller ok“ will be cancelled.
Notice
If the controller is disabled while the material is running, the drive unit will stop
immediately. This may cause material crack. Therefore, the controller should be disabled
only if the machine is no longer running.
