Honeywell UDC2800 - Page 119

Function
Prompt
Selections or
Range of Setting
Parameter Definition
Input 1 Filter 0 to 120
seconds No
filter = 0
Filter for Input 1 —A software digital filter is
provided for Input 1 to smooth the input signal.
You can configure the first order lag time
constant from 1 to 120 seconds. If you do not
want filtering, enter 0.
Input 1
Burnout
Burnout Protection (Sensor Break) provides most
input types with upscale or downscale protection
if the input fails.
NO Burnout Pre-configured Failsafe output (selected in the
CONTROL Set up Group) applied if failed input is
detected (does not apply for an input out of
range). Diagnostic message IN1 FAIL is
intermittently flashed on the lower display.
Upscale
Burnout
It will force the Input 1 signal to the full scale
value when the sensor fails. Diagnostic message
IN1 FAIL intermittently flashed on the lower
display.
The controller remains in Automatic control
mode and adjusts the controller output signal in
response to the full scale Input 1 signal
developed by the Burnout circuitry.
Downscale
Burnout
It will force the Input 1 signal to the lower range
value when the sensor fails. Diagnostic message
IN1 FAIL intermittently flashed on the lower
display.
The controller remains in Automatic control
mode and adjusts the controller output signal in
response to the lower range Input 1 signal
developed by the Burnout circuitry.
No Failsafe This selection does not provide input failure
detection and should only be used when a
thermocouple input is connected to another
instrument which supplies the Burnout current.
(For this selection, no burnout signal is sent to
the sensor.)
119
Chapter 4 - Configuration