Sterling SDAA 25-100 Manual Do Utilizador

Dehumidifying Dryers 

Chapter 4: Operation 

26 of 59 

 

Process Air Temperature Controller 
Our 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 are factory set and 
adjusted; normally, no field adjustment to the internal controls is necessary.  

 

 

 

 

 

 

 

 

 

 

 

PV 

  8.8.8.8    

Process Value 
Numeric 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. 

SV 

8.8.8.8

 

Set Value  
Numeric LED 

During normal operation, the set value (SV) 
numeric LED indicator displays the process set 
point temperature selected for the dryer. The dryer 
then maintains this set point temperature.  This 
LED indicator also displays parameter and pre-set 
function values during configuration setup. 

OUT1 

Out 1 LED 

Lit when Control Output 1 is on.   The Out1 
indicator lights when the controller signals the 
process heaters to be energized. 

OUT2 

Out 2 LED 

Lit when Control Output 2 is on.  Not used in 
this application. 

 AT 

AT LED 

Flashes during auto-tuning in process value (PV) 
screen.