Step Operation Press Result
4 Adjust LSP2
value
Increment
key or
Decrement
key
Until LSP2 is a value within the Cool Zone (output
below 50%).
5 Switch to
“Automatic”
Mode
Man Auto
key
Until “Auto” appears (on controllers with Manual
option).
6 Show Tuning
Prompt
Lower
Display key
Until “TUNE OFF” is shown in the lower display.
7 Tuning in
operation
Increment
key or
Decrement
key
Select “SLOW” or “FAST” in the lower display.
A “T” appears under SP in the middle display as
long as ACCUTUNE process is operating. When
process completes, tuning parameters are
calculated and the "T" will disappear and lower
display will show “TUNE OFF” prompt.
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 5-9: Procedure for Using BLENDED TUNE at Start-up for Duplex Control
Step Operation Press Result
1 Configure
LSP1
Lower Display key Until SP (Local Setpoint 1) shows in
the lower display.
2 Adjust LSP1
value
Increment key or
Decrement key
Until the Setpoint is to the desired
value.
3 Switch to
“Automatic”
Man Auto key Until “Auto” appears (on controllers
with Manual option).
193
Chapter 5 - Monitoring and Operating the Controller
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