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Monitoring and Operating the Controller
108 UDC2500 Universal Digital Controller Product Manual 4/07
Step Operation Press Result
5
Initiate Tuning
Select “DoSLOW” or “DoFAST” in
lower display.
6
Tuning in operation
Lower
Display
Lower
Display
Lower
Display
Upper display will flash “TUNE” as
long as ACCUTUNE process is
operating. When process
completes, tuning parameters are
calculated and lower display will
show “NoTune” prompt.
Table 4-15 Procedure for Using MANUAL TUNE for Cool side of Duplex Control
Step Operation Press Result
1
Configure LSP2
Lower
Display
Lower
Display
Lower
Display
Until 2SP (Local Setpoint 2) shows
in the lower display.
2
or
Until LSP2 is a value within the
Cool Zone (output below 50%).
3
Switch to
“Automatic” Mode
M-A
Reset
M-A
Reset
M-A
Reset
Until the “A” indicator is lighted (on
controllers with Manual option).
4
Show Tuning
Prompt
Lower
Display
Lower
Display
Lower
Display
Until “NoTUNE” is shown on lower
display.
5
Initiate Tuning
Select “DoSLOW” or “DoFAST” in
lower display.
6
Tuning in operation
Lower
Display
Lower
Display
Lower
Display
Upper display will flash “TUNE” as
long as ACCUTUNE process is
operating. When process
completes, tuning parameters are
calculated and lower display will
show “NoTune” prompt.