Endress+Hauser RA33 - 6.3.3 Application; Batch Settings; Counting Direction; Filling Stages

Batch Controller RA33 Commissioning
Endress+Hauser 35
Fig. 31: Curve diagram
0 Batch start
10 Start max.
90 Stop max.
100 Quantity reached
6.3.3 Application
Batch settings
All batching and control-related settings for batching must be made in Batch settings.
Batch mode
The main setting for batching functionality is to select the batch mode. It consists of the following
modes: "Standard", "Automatic restart" and "Manual".
Counting direction
The counting direction is another basic setting. It is only relevant for showing values on the display
and refers to the direction of counting in which the preset counter can be displayed. The options for
selection are forwards, in which case a totalizer is displayed, or backwards, whereby the remaining
quantity of the current batch is displayed.
Filling stages
The device has options for 1-stage and 2-stage batching. The main valve is for the first stage. It sup-
plies a lower flow rate and is opened at the beginning of the batch. It is used for precision dosing at
the end of the batch. The second filling stage, with a higher flow rate, is also opened after a specified
delay time so that the required batching quantity is achieved faster. This stage is closed when a
remaining pre-stop quantity is reached. The delay time and pre-stop quantity must also be specified
in the batch settings.
Function Description
Standard "Standard" mode: A value must be entered for the preset counter after commissioning. This
value is then used for all batch cycles until it is changed. The value for the preset counter
can be changed during an active batch or when batching has stopped. This preset counter
value is then used when the next new batch is started.
A batch can be started via control output or by pressing a button. It continues until the
value on the preset counter is reached or if the batch is first paused by means of a stop com-
mand (button or control input). From this paused state, the batch can either be restarted by
means of a start command or aborted entirely by means of another stop command.
Automatic restart "Automatic restart" functions like Standard mode with one addition, however; a batch
sequence is started which is restarted after a configurable restart delay time. This continues
until the batch sequence is paused and ended.
Manual In manual mode, a preset counter is not required. The batch is started and stopped by
pressing a button on the device or via the control input.