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Cabinet Series Dehumidifying Dryer 18
4-2 Process Air Dew Point Display
The Dew Point display indicates the current process air delivery moisture content. The display
uses a microprocessor-based controller for reading dew point air temperature. The controller is a
modular, self-contained removable unit in the mounting housing. All parameters are factory-set
and adjusted; no field adjustment to the internal controls is necessary. The high dew point alarm
is also factory adjusted.
4-3 Process Air Temperature Controller
Our dehumidifying dryers use a microprocessor-based PID temperature controller for maintaining
process air temperature. The controller is a modular, self-contained unit you can remove from the
mounting housing. All parameters except for the process air set point is factory set and adjusted;
no field adjustment to the internal controls is necessary.
4-4 Identifying Temperature Controller LED Indicators
LED
Indicator
Description
Process Value
Numerical
LED
During normal operation, the process value (PV)
numeric LED indicator displays the process
temperature at the To Process thermocouple. It
also lists parameters during setup and error
messages if any errors occur.
Set Value
Numeric LED
During normal operation, the set value (SV)
numeric LED indicator displays the process set
point you selected for the dryer. The dryer then
maintains this set point temperature. This LED
indicator also displays parameter and pre-set
function values during setup.
OUT1
Lit when control output 1 turns on. The Out
indicator lights when the controller signals the
process heaters to be energized.
OUT2
Lit when control output 2 turns on. Not used in
this application
.
MANU
Lit when the manual operation mode is being
used.
STOP
Lit when control operation has been stopped. Not
used in this application.
RMT
Lit during remote operation. Not used in this
application.
AT
Flashes during auto-tuning.
SUB1
Lit when the output function assigned to auxiliary
output 1 turns on.