Honeywell UDC3500 Product Manual page 145

Function Prompt
Lower Display
3/07
Selections or
Range of Setting
Upper Display
DOWN
NO FS
UDC3500 Universal Digital Controller Product Manual
Parameter
Definition
DOWNSCALE BURNOUT—Forces the Input 4
signal to the lower range value when the sensor
fails. Diagnostic message IN4 FAIL intermittently
flashed on the lower display.
The controller remains in Automatic control mode
and adjusts the controller output signal accordingly.
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.
Configuration
129