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Large Dehumidifying Dryers  
Controls 
49 
Alarm Screen Example 
 
               
 
 
This is an example of what a typical Alarm screen looks like.  The user will see the message 
causing the alarm in the top half of the display with an ALARM SILENCE button in the 
lower half.  
To turn off the alarm, the user must press the ALARM SILENCE button.  This will cancel 
the alarm. 
     See Section 7-4: Alarms on p. 57 for alarm descriptions. 
  
4-5 Redundant 
Safety 
Controller Display 
 
Optional 
The Redundant Safety Controller limits the process air temperature from exceeding specific 
temperatures in case of a catastrophic failure of the primary PLC process air temperature 
control system.  The controller is a modular, self-contained unit removable from the 
mounting housing. All parameters are factory set and adjusted; normally, no field adjustment 
to the internal controls is necessary. 
          Figure 12:  Typical Redundant Safety Controller Display