User's Manual

198 UDC 3300 Controller Product Manual 4/00
Using SP tuning at
start-up
After SP or PV+PV has been enabled, use the procedure in Table 5-37 to
use SP tuning at start-up.
Table 5-37 Procedure for Using SP Tuning at Start-up
Step Action
1
Put the controller in manual mode by pressing the MANUAL/AUTO
key.
2
Let the PV stabilize.
3
Adjust the setpoint to the desired value.
4
Put the controller in automatic mode by pressing the MANUAL/AUTO
key.
The controller will switch to automatic mode and the process will start to
move toward the setpoint and will line out with the proper tuning constants.
A large T appears on the left side of the upper display to indicate that SP
tuning is in progress.
SP tuning for duplex
(heat/cool)
SP tuning can be done for applications using duplex (heat/cool) control.
Configuring SP tuning
for duplex (heat/cool)
To configure this item, refer to Section 3 – Configuration:
• Set Up Group ACCUTUNE
• Function Prompt ACCUTUNE or ACCUTUN2
• Select SP or SP+PV, using either ▲ or ▼.
• Enter the Setpoint Change Value, Function Prompt SP CHANG or
SP CHAN2.
– Verify the Process Gain Value to be 1.0, Function Prompt KPG or
KPG 2.
– Verify Criteria selected is FAST, Function Prompt CRITERIA or
CRITERA2.