Honeywell UDC 2300 - Table 5-1 Running a Setpoint Ramp

Setpoint Rate/Ramp/Program Operation
60 UDC2300 Universal Digital Controller User Manual 4/00
• SP RATE and SPPROG are disabled
• A Ramp Time (TIMIN) in minutes has been configured
• A final setpoint value (FINLSP) has been configured. See Subsection 3.5 –
Configuration group “SPRAMP” for details.
Operation
Running a Setpoint Ramp includes starting, holding, viewing the ramp, ending
the ramp and disabling it. See Table 5-1.
Table 5-1 Running A Setpoint Ramp
Step Operation Press Result
1 Select
Automatic Mode
MAN/AUTO
“A” indicator is on.
Upper Display = Hold and PV value
Lower Display = SP and Present value
2 Set Start
Setpoint
DISPLAY
Until start SP value is in lower display
Upper Display = Hold and PV value
Lower Display = SP and start SP value
3 Start the Ramp
RUN/HOLD
You will see
Upper Display = Run and a changing PV value
Lower Display = SP and a changing SP value
increasing or decreasing toward a final SP value
4 Hold/Run the
Ramp
RUN/HOLD
This holds the ramp at the current setpoint value.
Press again to continue.
5View the
remaining ramp
time
Until you see
Upper Display = RUN or HOLD and the PV value
Lower Display = RP xx HH.MM (time remaining)
6 End the Ramp
DISPLAY
When the final setpoint is reached, “RUN” changes
to “HOLD” in the upper display and the controller
operates at the new final setpoint.
7 Disable
SPRAMP
See Section 3.5 – Configuration group “SPRAMP”
for details.
Power Outage
If power is lost during a ramp, upon power-up the controller will be in HOLD and
the setpoint value will be the setpoint value prior to the beginning of the setpoint
ramp. The ramp is placed in hold at the beginning.
Configure the mode at Set up Group “CONTROL”, function prompt “PWRUP”.
See Section 3.10 – CONTRL GROUP FUNCTION Prompts.