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5-3-2-7 Navigating among the “Station Operator” Screens
The controls at the top of the screen enable you to move
among the “Station Operator” screens:
• To display the screen for the next lower-numbered station
(for example, to move from the screen for Station 15 to the
screen for Station 14), touch PREVIOUS.
• To display the screen for the next higher-numbered station
(for example, to move from the screen for Station 15 to the
screen for Station 16), touch Next.
• To exit to the “Station Status” (or “Pump Status”) screen,
touch STATION STATUS (or PUMP STATUS).
5-3-2-8 Adjusting Convey Time and Dump Delay
Convey time is the length of time the station’s vacuum valve
remains open to allow material to be drawn in. (For a
volume-fill station, the valve closes when material covers the
station’s volume-fill proximity sensor or this time elapses,
whichever comes first.)
Unload time is the length of time allowed for material to drain
from the station into its receiver. During this time, the
controller does not attempt to deliver any more material to
the station.
The settings for convey time and unload time should match
the times actually required to fill and empty the station. The
following problems may occur if these settings are incorrect:
• Material is backing up and causing “high vacuum” alarms
(for time-fill stations only): Convey time is too long.
• System is not keeping up with the demand for material:
Convey time is too short, or dump delay is too long.
For your reference, the “Station Operator” screen shows the
length of time the controller actually spent conveying
material during the most recent delivery under Last Convey.