United Security Products AVD-45c Manual Pagina 218

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204 UDC 6300 Process Controller Product Manual 1/03
5.20 Accutune, Continued
SP Only Tuning for
Duplex (Heat/Cool)
“SP Only” tune can be done for applications using Duplex (Heat/Cool)
control.
Configuring SP Only
Tuning for Duplex
(Heat/Cool)
To configure this item, refer to Section 3 - Configuration:
• Set Up Group “ACCUTUNE”
• Function Prompt “ACCUTUNE” or “ACCUTUNE2”
• Select “SP Only” or SP Only + PV”. Use ( or )
• Enter the Setpoint Change Value, Function Prompt “SP
CHANG” or “SPCHANG2”.
- Verify the Process Gain Value to be 1.0, Function Prompt
”KPG”
or “KPG2”
- Verify Criteria selected is “FAST”, Function Prompt
“CRITERIA” or “CRITERIA2”
Using SP Only tuning
at Start-up for Duplex
(Heat/Cool)
After “SP Only” or “SP Only + PV” has been enabled, use the procedure in
Table 5-41 to use “SP” tuning at Start-up for Duplex (Heat/Cool) control.
Table 5-41 Procedure for Using SP Tuning at Start-up for Duplex
Step Action
1
Put the controller into manual mode- Manual/Auto
key.
2 Heat Zone:
a. Adjust the output to a value ABOVE 50% and at least 5% lower
than the normal Heating Setpoint value.
b. Let the PV stabilize.
c. Press the Manual/Auto
key to start tuning for Heat Zone.
The controller will switch to automatic mode and the process will start
to move toward the setpoint and will line out with the proper HEAT
tuning constants.
A large “T” appears on the left side of the upper display to indicate
that (SP ) tuning is in progress.
When the “T” disappears, tuning is completed and final values are
entered for PID Set 1 parameters in the Tuning group.
3 Cool Zone:
a. Adjust the output to a value BELOW 50% and at least 5% above
the normal Cooling Setpoint value.
b. Let the PV stabilize.
c. Press the Manual/Auto
key to start tuning for Cool Zone.
The controller will switch to automatic mode and the process will start
to move toward the setpoint and will line out with the proper COOL
tuning constants.
A large “T” appears on the left side of the upper display to indicate
that (SP ) tuning is in progress.
When the “T” disappears, tuning is completed and final values are
entered for PID Set 2 parameters in the Tuning group.
Continued on next page
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