Setpoint Ramp; Table 4-24 Running A Setpoint Ramp - Honeywell UDC2500 Product Manual

Monitoring and Operating the Controller
RUN/HOLD key
You can start or stop the Ramp or Program using the RUN/HOLD key.

4.19 Setpoint Ramp

Introduction
When you have configured a SETPOINT RAMP, the ramp will occur between the
current local setpoint and a final local setpoint over a time interval of from 1 to 255
minutes. You can RUN or HOLD the ramp at any time.
Configuration Check
Make sure
• SPRAMP is enabled
• 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 4-24.
Step Operation
Select Automatic
1
Mode
2 Set Start Setpoint
Start the Ramp
3
4 Hold/Run the
Ramp
5 View the
remaining ramp
time
116

Table 4-24 Running A Setpoint Ramp

Press
"A" indicator is on.
M-A M-A M-A
Reset Reset Reset Upper Display = Hold and PV value
Lower Display = SP and Present value
Until start SP value is in lower display
Lower Lower Lower
Display Display Display
Upper Display = Hold and PV value
Lower Display = SP and start SP value
You will see
Run Run Run
Upper Display = Run and a changing PV value
Hold Hold Hold
Lower Display = SP and a changing SP value increasing
or decreasing toward a 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 = RUN or HOLD and the PV value
Display Display Display
Lower Display = RP xx HH.MM (time remaining)
UDC2500 Universal Digital Controller Product Manual
Result
4/07