Operators Handbook DCU3 – System
3., Function Selection and Inputs
BAEDCU3 - Rev. 4.6 - 0504
3 - 4
3.1.3
Selection of Menus and Entering of Parameters
The operation of the DCU3 - system is organized systematically. Related tasks of fermentor operation
are combined in functional groups - the „main functions“ listed below. A main function can be directly
activated at any time during the running process from any submenu by pressing the corresponding
main function touch key at the screen.
Main function
Display, use
Main
Graphic overview of the entire fermentor system showing the most important
process parameters and allowing for direct access to the related functions.
Calibration
Calibration of sensors and pumps, taring of balance systems
Control Loops
Operation of the controllers and related setpoint profiles and timers
Batch Control
Operation of serial steps, batch processes, etc., such as sterilization runs
Recipes
Operation of 4 recipes with preset controller parameters, setpoint profiles, tim-
ers and alarm parameters
Maintenance
Manual access to inputs and outputs, measurement ranges of process values,
parameters of remote systems (such as host computers, balance systems) and
to the maintenance (service) functions
Documentation Operation of recorders and printers for documentation of the process
Info
Information about the installed software / general notes
There are two possible methods to select a menu, step forward to a subfunction and enter parame-
ters. As an example here are the possible methods for setpoint adjustment of the stirring speed:
Stepping through the menu tree as known from the former DCU1- and DCU2- systems:
1.
Select the main function „Control Loops“ by pressing the touch key
2.
Select the „Stirrer“ controller from the overview of controllers
3.
Adjust the setpoint
Enabling the data entry function directly from the main menu. This is accomblished by object
(based) linking of the actual stirrer speed display in the main menu to the related controller
functions, i.e. „stirrer controller, setpoint profile and alarm limits“:
4.
Press the „Stirrer“ - touch key in the working area of the main menu. The display
directly
switches over
to the menu of the stirrer controller.
5.
Adjust the setpoint.
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