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74 UDC3200 Universal Digital Controller Operator Manual 04/08
4.5.3 Using AUTOMATIC TUNE at start-up for Duplex (Heat/Cool)
Used when DUPLEX has been configured for AUTOMATIC. This is the preferred
selection for most Heat/Cool applications when tuning a new chamber. This selection
will sequentially perform both Heat and Cool tuning without further operator
intervention.
Table 4-6 Procedure for Using AUTOMATIC TUNE at Start-up for Duplex
Control
Step Operation Press Result
1
Configure LSP1
Lower
Display
Lower
Display
Lower
Display
Until SP (Local Setpoint 1) shows
in the lower display.
2
or
Until LSP1 is a value within the
Heat Zone (output above 50%).
3
Configure LSP2
Lower
Display
Lower
Display
Lower
Display
Until 2SP (Local Setpoint 2) shows
in the lower display.
4
or
Until LSP2 is a value within the
Cool Zone (output below 50%).
5
Switch to
“Automatic” Mode
Man
Auto
Man
Auto
Man
Auto
Until the “A” indicator is lighted (on
controllers with Manual option).
6
Show Tuning
Prompt
Lower
Display
Lower
Display
Lower
Display
Until “TUNE OFF” is shown on
lower display.
7
Initiate Tuning
Select “DO SLOW” or “DO FAST”
in lower display.
Tuning in operation
Lower
Display
Lower
Display
Lower
Display
Upper display will show a “T” as
long as ACCUTUNE process is
operating. When process
completes, tuning parameters are
calculated and lower display will
show “NO TUNE” prompt.