Configuration 
132  UDC3500 Universal Digital Controller Product Manual  3/07 
Function Prompt  
Lower Display 
Selections or  
Range of Setting  
Upper Display 
Parameter  
Definition 
 
DOWN 
DOWNSCALE BURNOUT—Forces the Input 5 
signal to the lower range value when the sensor 
fails. Diagnostic message IN5 FAIL intermittently 
flashed on the lower display.  
The controller remains in Automatic control mode 
and adjusts the controller output signal accordingly. 
 
NO FS 
NO FAILSAFE—This selection does not provide 
input failure detection and should only be used when 
a thermocouple input is connected to another 
instrument that supplies the Burnout current. (For 
this selection, no burnout signal is sent to the 
sensor.)  
 ATTENTION  The Thermocouple Health feature is 
disabled when NO FS is configured.