Controller Deadband - Upper Limit; Controller Deadband - Lower Limit; Reaction When Max. Corrective Action Is Exceeded; Selection For Dosing Filter - Siemens SIWAREX WP251 Manual

Scale parameters and functions
8.23 DR 24 Controller and filter parameters
8.23.6

Controller deadband - upper limit

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.
8.23.7

Controller deadband - lower limit

When proportional controller is activated, a deadband for the controller can be defined. If the
achieved final weight of a dosing (with check) is above the lower 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.
8.23.8

Reaction when max. corrective action is exceeded

This parameter defines the controller behavior when the maximum corrective action (DR 24)
is exceeded in a cycle. The following options are available:
Function
code
0
1 (default)
8.23.9

Selection for dosing filter

For shut-off of the "coarse" and "fine" dosing signals, a separate signal branch with its own
filter settings can be specified. The following options are available:
Function
code
0
1 (default)
Note
Standstill 1 and 2 always reference the gross process value 1 with filter settings from DR 3.
124
Meaning
Control is discontinued for this cycle.
The controller controls with the maximum corrective action (DR 24)
Meaning
The dosing signals are shut off based on net process value 1 (with filter from DR 3)
The dosing signals are shut off according to net process value 2 (with filter from DR
24)
SIWAREX WP251
Manual, 12/2015, A5E37203357A