Honeywell UDC2800 - Page 135

Function
Prompt
Selections or Range
of Setting
Parameter Definition
Deadband Deadband is an adjustable gap between the
operating ranges of output 1 and output 2 in
which neither output operates (positive value)
or both outputs operate (negative value).
–5.0 to 25.0 % Time Duplex, Current Duplex, Current Time or
Time Current
0.5 to 5.0 % Position Proportional and Three Position Step
Output
Hysteresis
0.0 to 100.0 % of
PV span
Hysteresis (Output Relay) is an adjustable
overlap of the ON/OFF states of each control
output. This is the difference between the
value of the process variable at which the
control outputs energize and the value at
which they de-energize.
Only applicable for ON/OFF control.
Failsafe
Mode
Failsafe Mode
Non Latching Controller stays in last mode that was being
used (automatic or manual); If unit was in
Automatic mode, then the output goes to the
failsafe value. (Note 4, Note 2)
Latching Controller goes to manual mode; If unit was in
Automatic mode, then the output goes to the
failsafe value. (Note 2)
Failsafe
Value
0 to 100 % Failsafe Output Value- The value used here will
also be the output level when you have
Communications SHED set to failsafe or when
No Burnout is configured and Input 1 fails.
ATTENTION: Applies for all output types
except Three Position Step Control.
0 Percent
100 Percent
Three Position Step Failsafe Output
0 Percent- Motor goes to closed position.
100 Percent- Motor goes to open position.
SW Failsafe Position Proportional motor position when
135
Chapter 4 - Configuration