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Watson-Marlow 620DuN and 620Du User Manual 35
Program
Select Program using the UP or DOWN keys and press ENTER to confirm.
The pump offers two choices: mA and V (0-10V). Use the UP or DOWN
keys to make a selection and press ENTER to confirm your decision.
The pump displays a screen allowing you to set the speed for low signal
input (4mA or 0V). Use the UP and DOWN keys to scroll the display to your
chosen speed and press ENTER to confirm the figure.
The pump displays a screen allowing you to set the speed for high signal
input (20mA or 10V). Use the UP and DOWN keys to scroll the display to
your chosen speed and press ENTER to confirm the figure.
If a mistake is made, the user may press STOP at any point in the
sequence (before pressing ENTER on the high signal speed screen), and the
pump displays the previous screen.
The final press on ENTER causes the pump to configure the hardware and
programmed response data. It briefly displays a confirmation screen and a
warning that the analogue signal is not trimmed, and returns the user to the
Analogue setup menu. Example values are shown here.
18.2.2 Scaling - stroke
Select Scaling - stroke using the UP or DOWN keys and press ENTER to
confirm your choice.
The pump offers six further choices: Off, Keypad, 4-20mA, 0-10V, 1-5V and
Program. Use the UP or DOWN keys to make a selection and press ENTER to
confirm your decision.
If Off is selected, scaling control is disabled and the pump displays the
Analogue setup menu.
The other options allow a choice of inputs to control scaling.
If Keypad is selected, scaling will be controlled by entering the scaling fac-
tor using the UP and DOWN keys while the pump is running in Auto ana-
logue mode. See 18.2 Analogue. The pump displays the Analogue setup
menu.
If 4-20mA, 0-10V or 1-5V is selected, the pump configures the hardware
and calibration data appropriately. A confirmation screen is displayed briefly
and the user is returned to the Analogue setup menu.
If Program is selected, the pump offers: mA (4-20mA) and V (0-10V). Use