Watson-Marlow 720DuN User Manual
49
18.11 Remote stop
The 720DuN pump can be stopped and started with a remote switch between the 5V
terminal and the i/p terminal of the Run/stop input, using an open=run or
open=stop command sense. It also operates with a logic input between 5V and 24V
on the i/p terminal of the Run/stop input. Disabling the remote stop control does not
disable other remote controls.
In the third screen of the Setup menu select
Remote stop
using the
UP
and
DOWN
keys. Press
ENTER
to confirm your choice.
The pump displays a screen allowing the user to disable the remote stop fea-
ture. Use the
UP
and
DOWN
keys to choose
Yes
or
No
and press
ENTER
to
confirm the decision.
If
No
is chosen, the pump asks the user to make a further choice, according to
whether the pump is required to run on an open or closed remote switch:
Open=stop
or
Open=run
. Choose using the
UP
and
DOWN
keys and press
ENTER
to confirm. The pump briefly displays a confirmation screen (an exam-
ple is shown here) and returns the user to the third screen of the Setup menu.
If
Yes
is chosen, the pump asks the user whether the remote stop feature is to
be disabled fully (for both manual and auto operation), or only for manual
operation, leaving remote stop functioning when the pump is operating in auto
mode. Choose using the
UP
and
DOWN
keys and press
ENTER
to confirm. If
manual and auto was chosen, the pump briefly displays a confirmation screen
(an example is shown here) and returns the user to the third screen of the
Setup menu. If manual only was chosen, the pump asks the user to make a
further choice, according to whether the pump (with remote control available in
auto mode only) is required to run on an open or closed remote switch:
Open=stop
or
Open=run
. Choose using the
UP
and
DOWN
keys and press
ENTER
to confirm. The pump briefly displays a confirmation screen (an exam-
ple is shown here) and returns the user to the third screen of the Setup menu.
Note
: The confirmation screen indicates whether Remote stop is enabled or
disabled, and displays the command sense of the remote control switch
even if
Remote stop has been disabled
. This allows the command sense to be dis-
played if remote switching is disabled.
Even with the remote stop function disabled, the pump
could still start if the remote auto/manual toggle input
is used to toggle the pump into analogue mode.
