DIGISPENSE 3020 CONTROLLER MODULE
Page 3-39
7 April, 2011
IVEK Corp.
P03L011B
3.3.2.3 Agitate Mode
Agitate Mode is useful for keeping fluid moving during extended periods of idleness of the fluidic system. Fluids
containing suspended particles may benefit from the constant fluid movement offered by the Agitate Mode.
The Agitate operation consists of three portions: Isolation, Agitating, Return.
Isolation provides the ability to move the fluid away from the discharge tip before Agitating the fluid. The
recommended range of the Isolation Volume is >1 to 1000 times the pump chamber volume.
The Agitation portion consists of four components: Reverse, Dwell, Forward, Dwell. Agitation is a repeating of the
sequence Reverse, Dwell, Forward, Dwell; until stopped. During Reverse, a volume of fluid, as configured by the
Agitation Volume, is moved in the Reverse direction, followed by a dwell (relative to a Forward Dispense/Meter). The
direction changes and the Agitate Volume is moved back in the Forward direction. The sequence of Reverse, Dwell,
Forward, Dwell then repeats until stopped.
Once stopped, the Return portion is automatically initiated. The Return portion simply moves the fluid back to the
starting position. Once the starting position is reached, the pump chamber is loaded full of fluid in preparation for the
next Production Mode operation.
NOTE
It is recommended to perform one or more "Waste" operations in the desired Production Mode after an
Agitate operation in order to properly setup the fluid for repeatable Dispenses.
3.3.3 Port Parking (PARK PORT)
Parking the port causes the piston to rotate to the port park position so the natural fluid flow (e.g., due to gravity) is
inhibited. Also, operations other than referencing and port changes are inhibited while the port is in the Park Position.
3.3.4 Display
The display provides an operator interface to all operating parameters in the Controller Module. New values can be
entered and current values displayed for all the functions of the system. The current operating mode and system
status are shown on the display. The display contains multiple interface screens each providing information to the
operator.
The display shows system status, settings and general information. The display is divided into six fields as shown.
Following is a description of what will be displayed in each field.
NOTE
1
References to push-buttons for fields 3 through 6 refer to
the push-button located below a word on the display. For
example, the push-button located under 'REFERENCE'
will be called the Reference push-button. These are
2
referred to as Function Push-Buttons 1 through 4 (FPB1
- FPB4).
Field 1 -
This field displays screen name and status informa-
(FPB1)
(FPB2)
(FPB3)
(FPB4)
tion.
Field 2 -
This field displays all the operating parameters.
3
4
5
6
Fields 3 through 6 (Function Push-Buttons 1 - 4) -
These fields provide function legends for the four function push-
buttons directly below the screen.
