Function
Operati on l 4-13
4
Operation
Control Function Descriptions(continued)
Screen
SCREEN 7 Self-loading
SCREEN 8 (Self-loading with
Ratio Valve Option)
SCREEN 9 (Self-loading with
Ratio Valve Option)
SCREEN 10 (Self-loading with
Ratio Valve Option)
This screen shows the amount of time the
hopper loader will run. The time should be
set for the time it takes to fill the loader. If
the hopper loader tries three consecutive
times without satisfying the demand sig-
nal, the dryer will display a passive alarm.
This screen shows the amount of time the
conveying blower will run with the ratio
valve in the virgin position. Ratio loading
is timed based. For example, a 50%
regrind mix would have the same load
time for both virgin and regrind.
This screen shows the amount of time the
conveying blower will run with the ratio
valve in the regrind position. Ratio loading
is time based. For example, a 50% regrind
mix would have the same load time for
both virgin and regrind.
This screen is used to turn layering On or
Off. If the layering is set to “On” and the
loader demand comes on, the control will
layer the materials into two layers
(regrind, virgin, regrind, virgin). For exam-
ple, if the regrind load time is 10 seconds
and the virgin load times is 30 seconds,
the control will change the ratio valve to
the regrind position for 5 seconds . After
the 5 seconds are complete the ratio valve
will change to the virgin position for 15
seconds (30 seconds/2). After the 15 sec-
onds are complete the ratio valve will
switch back to the regrind position to load
again for 5 seconds. Similarly, after this 5
second regrind cycle is complete the ratio
valve will switchback to the virgin posi-
tion for 15 more seconds for the final layer
of virgin material.
HOPPER LOADER
LOAD TIME 10 SEC
HOPPER LDR VIRGIN
LOAD TIME 20 SEC
HOPPER LDR REGRIND
LOAD TIME 20 SEC
HOPPER LOADER LAYERING
LOAD TIME ON
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