Control Factor Of Proportional Controller (%) [Controlfactorpcontroller]; Control Factor Of Fine Time Controller (%) [Controlfactortcontroller]; Max. Control Access Of Proportional Controller [Maximumcontrollaccesspcontroller]; Proportional Controller Deadband - Upper Limit [Deadbandpcontrollerplus] - Siemens SIMATIC ET 200SP Operating Instructions Manual

Parameter assignment/addressing
6.19 DR24 Controller parameters
Note
Blocking time error
If blocking time errors occur in two consecutive dosing operations, the shut-off points of the next
dosing are reset. The shut-off points are automatically reset to the values currently entered in
DR 23. In addition, the module outputs the technology message "TM 2119 – Shut-off points
reset due to blocking time error".
6.19.3

Control factor of proportional controller (%) [controlFactorPController]

When proportional controller is activated, its control factor can be defined. The parameter is
specified as a percent.
6.19.4

Control factor of fine time controller (%) [controlFactorTController]

The controller changes the coarse shut-off point by changing the fine weight.
F
n+1
F
n
F
n+1
K
D
Fine
t
Diff
6.19.5 Max. control access of proportional controller
[maximumControllAccessPController]
When proportional controller is activated, the maximum possible correction of the shut-off
points by the controller can be defined. Depending on the "Parameter relation" setting (DR 24),
the value must be specified and interpreted as a percentage of the set point (DR 20) or as an
absolute weight value.
6.19.6

Proportional controller deadband - upper limit [deadBandPControllerPlus]

When proportional controller is activated, a deadband for the controller can be defined. If the
achieved final weight of a dosing (with check) is below the upper limit of the deadband, the
controller does not correct the shut-off points. If both limits are at zero, the controller corrects
after each checked dosing.
96
= F + (K * D * t )
n Fine Diff
Fine weight for current weighing
Fine weight of next weighing
Control factor for fine time controller
Material flow at time fine signal was switched off
Control deviation
Technology module TM SIWAREX WP351 HF
Operating Instructions, 01/2020, A5E47521010-AA