Using Blended Tune At Start-Up For Duplex (Heat/Cool); Table 4-11 Procedure For Using Blended Tune At Start-Up For Duplex Control - Honeywell UDC3500 Product Manual

Monitoring and Operating the Controller
4.10.4

Using BLENDED TUNE at start-up for Duplex (Heat/Cool)

When DUPLEX has been configured for DISABLE. This is the preferred selection for
Heat/Cool applications, which use a highly insulated chamber (a chamber which will lose
heat very slowly unless a cooling device is applied). Only one local setpoint (LSP 1) is
needed for this selection.
This selection results in performance tuning over the full range utilizing both Heat and
Cool outputs to acquire blended tune values that are then applied to both Heat and Cool
tuning parameters. Both PID sets are set to the same values.

Table 4-11 Procedure for Using BLENDED TUNE at Start-up for Duplex Control

Step
1
2
3
4
5
6
210
Operation
Configure LSP1
Switch to
"Automatic" Mode
Show Tuning
Prompt
Initiate Tuning
Tuning in operation
UDC3500 Universal Digital Controller Product Manual
Press
Until SP (Local Setpoint 1) shows
Lower
in the lower display.
Display
Until the Setpoint is to the desired
or
value.
Until the "A" indicator is lighted (on
Man/Auto
controllers with Manual option).
Until "TUNE OFF" is shown on
Lower
lower display.
Display
Select "DO SLOW" or "DO FAST"
in lower display.
Lower Upper display will show a "T" as
Display
long as ACCUTUNE process is
operating. When process
completes, tuning parameters are
calculated and lower display will
show "NO TUNE" prompt.
Result
3/07