Table 4-29 Running A Setpoint Ramp - Honeywell UDC3500 Product Manual

Monitoring and Operating the Controller
Configuration Check
Make sure
• SPRAMP is enabled
• SP RATE and SPPROG are not running.
• A Ramp Time (TIMIN) in minutes has been configured
• A final setpoint value (FINLSP) has been configured. See Subsection 3.6 –
Configuration group "SPRAMP" for details.
Operation
Running a Setpoint Ramp includes starting, holding, viewing the ramp, ending the ramp
and disabling it. See Table 4-29.
Step Operation
1 Select Automatic
Mode
Set Start Setpoint
2
3 Start the Ramp
4 Hold/Run the
Ramp
5 View the
remaining ramp
time
6 End the Ramp
7 Disable SPRAMP
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.
232

Table 4-29 Running A Setpoint Ramp

Press
"A" indicator is on.
Man Man Man
Auto Auto Auto Upper Display = "H" and PV value
Lower Display = SP and Present value
Until start SP value is in lower display
Lower Lower Lower
Upper Display = "H" and PV value
Display Display Display
Lower Display = SP and start SP value
You will see
Run Run Run
Upper Display = "R" and a changing PV value
Hold Hold Hold
Lower Display = SP and a changing SP value increasing
or decreasing toward the final SP value
This holds the ramp at the current setpoint value. Press
Run Run Run
again to continue.
Hold Hold Hold
Until you see
Lower Lower Lower
Upper Display = PV value
Display Display Display
Lower Display = RAMPXXXM (time remaining in
minutes)
When the final setpoint is reached, "R" changes to "H" in
the upper display and the controller operates at the new
final setpoint.
See Section 3 – Configuration group "SPRAMP" for
details.
UDC3500 Universal Digital Controller Product Manual
Result
10/05