20
The grey boxes on the left are for the input scaling for the speed, and are in the units
of RPMs. In other words these are the boxes that put the limitations on the commanded
speed from the control panel. The green boxes on the left are for setting the hertz values
that correspond to the minimum and maximum RPM values in the grey boxes.
The typical setup for a DVX Dryer is to allow the range of RPMs to go from 200
to 600 RPM. This normally corresponds to something close to 17 to 53 Hz, as shown in
Figure 5.17.
Figure 5.17:
Deck scaling options Example
Setting the RPM limits in the grey boxes limits the range of values that the user can
input on the control panel screen. For the typical setup given above, Figure 5.18 shows
that the allowable input value on the control panel screen for the Deck Speed is limited
to 200 to 600 RPM.
Figure 5.18:
Changing Deck speed command for typical setup
5.2.2
Deck Eccentric Current, DC Bus Voltage, and Tempera-
ture alarm limits
The Deck VFD has settings for alarm limits for the output current, dc bus voltage, and
temperature of the VFD. All of them function in the same way, they just have different
units, so we will just look at one of them and then the reader can apply it to the rest of
them
5
.
Consider the output current settings, in amps (A), shown in Figure 5.19. There are
two sets of grey input boxes, one set on the right side, one on the left.
5
for further help see Oliver’s training video ”Setting up the Deck VFDs”
