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Watson-Marlow 620DuN and 620Du User Manual 40
18.9 Run time
The pump cumulatively records hours of motor operation. The figure can be dis-
played or reset to zero.
In the third screen of the Setup menu select Run time using the UP and
DOWN keys. Press ENTER to confirm your choice.
The pump briefly displays the total hours its motor has operated since the last
time the counter was reset to zero hours, followed by an opportunity to reset
the counter to zero hours. An example is shown here. Use the UP and DOWN
keys to choose Yes or No and press ENTER to confirm your decision.
The total hours screen is displayed with its total reset to zero, or unchanged, as
appropriate. The pump displays the third screen of the Setup menu.
Note: Run time is displayed on the Combined display. See 18.3 Display. Run time
does not zero when factory default is selected.
18.10 Outputs
The 620DuN pump offers four relay status outputs. See 12 Switching the pump on
for the first time for initial start-up defaults. Each of six parameters can be config-
ured to any output, or more than one output.
The 620Du pump offers four digital status outputs. See 12 Switching the pump on
for the first time for initial start-up defaults. Each of six parameters can be config-
ured to any output, or more than one output.
The parameters are:
Run/stop
Provides a status output to indicate whether the pumphead is in a running or
stopped condition. When running at 0rpm, the run/stop output indicates run-
ning.
Direction
Provides a status output to indicate which direction the pump is set to run in.
Auto / man
Provides a status output to indicate whether the pump is in analogue control
mode or manual control mode.
General alarm
Provides an alarm output when any system error condition occurs except: leak
detected; analogue signal out of range; analogue over-signal; analogue no sig-
nal.
DuN
Du
DuN, Du