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7/50D Plus or 7/50D Controller Chapter 3: Installation 39
The DeviceNet Input Status screen appears:
Station numbers are stacked vertically as column headings in this screen.
2. Check that all inputs are on (green) or off (black) as expected and that they switch on
and off as required:
a. Station demand switch: In a new installation, the box labeled Demand
Switch should be green for every station (vacuum hopper) in the system.
(All other boxes for demand switches will be black.) In a retrofit at an
existing installation, each station’s Demand Switch box should be green
unless the receiver bin under the station is in fact full.
b. Station volume-fill proximity switch: For each time-fill station, the box
labeled Volume Fill Prox should be black; no further check is needed
for these stations. For each volume-fill station, you should calibrate the
sensor now and, at the same time, check this input. To calibrate the sensor,
remove the station’s cover, extract the volume-fill proximity switch, and
place the switch in a container of the material that you will be using at this
station. Adjust the sensor according to the procedure given in the
manufacturer’s documentation for the switch. While you are doing this,
check that:
1. The box on this screen is green when the sensor indicates that no
material is present, and
2. The box is black when the sensor indicates that material is
present.
Then reinstall the switch in the station.