Watson-Marlow 720UN and 720SN User Manual
38
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 cho-
sen 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 dis-
plays 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.
16.2.2 Trim
Trim
displays the Trim menu, described above. See 16.1
Trim
. It is recommended
that a trim calibration is always performed to align the pump’s response to the actual
process analogue signal.
16.2.3 Menu
Menu
returns the user to the first section of the Setup menu, described above. See
16
Setup
.
