Monitoring and Operating the Controller
• 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 4-23.
Table 4-23 Running A Setpoint Ramp
Step Operation Press Result
Select Automatic
Mode
1
Man
Auto
Man
Auto
Man
Auto
2
Set Start Setpoint
Lower
Display
Lower
Display
Lower
Display
Until start SP value is in lower display
Upper Display = “H” and PV value
Lower Display = SP and start SP value
3
Start the Ramp
Run
Hold
Run
Hold
Run
Hold
You will see
Upper Display = “R” and a changing PV value
Lower Display = SP and a changing SP value increasing
or decreasing toward the final SP value
4
Hold/Run the
Ramp
Run
Hold
Run
Hold
Run
Hold
This holds the ramp at the current setpoint value. Press
again to continue.
5
View the
remaining ramp
time
Until you see
Upper Display = PV value
Lower Display = RAMPXXXM (time remaining in
minutes)
6
End the Ramp
Lower
Display
Lower
Display
Lower
Display
When the final setpoint is reached, “R” changes to “H” in
the upper display and the controller operates at the new
final setpoint.
7
Disable SPRAMP
See Section 3 – Configuration group “SPRAMP” for
details.
“A” indicator is on.
Upper Display = “H” and PV value
Lower Display = SP and Present value
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 “PWR MODE”.
See Subsection 3.11 – CONTROL SETUP GROUP Prompts.
124 UDC3200 Universal Digital Controller Product Manual 12/04
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