Honeywell UDC3500 User Manual

Monitoring and Operating the Controller
3/07 UDC3500 Universal Digital Controller Product Manual 223
Digital Input
Selections
Display Indication Action on Contact Closure
Controller returns (toggles) to original state when contact
reopens unless otherwise noted
D L1/2
Changes the display to the loop not being displayed at time of
closure.
RST FB
Allows Input 2 to override the internal reset value, providing
external reset feedback.
ToPURGE MAN blinks and output
value shows in lower
display
Forces loop to manual mode with the output values set to the
Output High Limit configuration.
PURG AX
A Digital Input assigned to Loop 1 forces any Auxiliary Output
configured for OUTPUT to go to 100% (20 mA).
A Digital Input assigned to Loop 2 forces any Auxiliary Output
configured for OUT 2 to go to 100% (20 mA).
LoFIRE MAN blinks and output
value shows in lower
display
Forces loop to manual mode with the output set to the Output
Low Limit configuration.
MAN LAT
Forces loop to manual mode. Reopening the contact has no
effect.
To return to automatic mode, press the
Man/Auto key.
RES TOT
Resets the accumulated totalizer value to zero. Reopening the
contact has no effect.
PV HOLD
Closing the switch freezes the PV at its current value. When
switch opens, the PV resumes normal operation.
REST T1
Reset Healthwatch Timer 1 to zero.
REST T2
Reset Healthwatch Timer 2 to zero.
REST T3
Reset Healthwatch Timer 3 to zero.
R ALL T
Reset all Healthwatch Timers to zero.
REST C1
Reset Healthwatch Counter 1 to zero.
REST C2
Reset Healthwatch Counter 2 to zero.
REST C3
Reset Healthwatch Counter 3 to zero.
R ALL C
Reset all Healthwatch Counters to zero.
R ALLTC
Reset all Healthwatch Timers and Counters to zero.

Honeywell UDC3500 Specifications

General

Brand	Honeywell
Model	UDC3500
Category	Controller
Language	English