Start Input; Using The View Menu - Knauer WellChrom HPLC Pump K-1001 Handbuch

14 Control of the HPLC Pump K–1001
If after leaving this item over the rhombus the message Conflict with existing
programs is displayed, this means that programs with different valve or pump
configuration already exist. In this case, either delete these programs according
to SOP 15 "Modifying and Deleting Programs" on page 23 or change your
valve or pump configuration correspondingly.
Fig. 13 on page 17 gives a detailed example for gradient mode selection.
PUMP HEAD: You can select the type of pump head installed in your pump.
Selection of any pump head sets specific flow rate calculating data as well as
maximum system pressures with respect to its specifications. The according
maximum pressure applies to all modes of operation and cannot be exceeded.
The nowadays used pump heads with ceramic inlays correspond to the
steel versions. Please select the steel pump head of the size in use!
PRESSURE AUTOZERO: You can make an offset correction for the pressure
display. Open the purge valve by turning the de-aeration screw , see {4.3} in
Fig. 3 on page 9, one turn to the left. Select menu with and start autozero
routine by pressing or . Offset correction is done automatically.
FLOW: You can enter a correction constant for the selected flow rate in a
preset range [4000 - 6000] depending on the type of pump head. This
correction changes the number of pump cycles at a selected flow rate. This
option allows for balancing different compressibility of solvents.
Only trained users should change that setting! Select menu with , position
cursor on desired numeric field and adjust values with or .
You have no access to the correction parameter, see Fig. 8. These can be
accessed by authorized maintenance personnel only.
PRESSURE LIMITS: Allows to set an individual minimum and maximum system
pressure. The pump will switch off automatically if the system pressure exceeds
limits. If minimum pressure is set to 0, no check of the minimum pressure is
carried out. The absolute maximum pressure is limited by the pump head
chosen and by the flow rate selected for this pump head. The detailed pressure
limits are given in the section „Maximum Pressure" on page 18.
The specified maximum pressure applies to all modes of operation and
cannot be exceeded. Units: 0.1 MPa (= bar).
START INPUT: If the START INPUT is set to ENABLED, a program can be
started by an external digital signal from the START IN input on the rear side of
the pump, see chapter „Connecting the Analog/error/start Socket" on page 28.
The setting STOP Pump will cause the pump to stop pumping, if an external
digital signal is applied on the START IN input. The setting START Pump
enables to start pumping by using an external signal.
If the START INPUT is set to START Pump or STOP Pump, no program runs
can be started and network control is inactivated.
DATE/TIME: You can use this menu for setting the system date and time of
your HPLC Pump K–1001.

Using the VIEW Menu

The VIEW menu lists existing programs and program links.
An example is given in Fig. 9: Programs 1, 2, 3, 4, 11 and link 21 have been
created.