Using Blended Tune At Start-Up For Duplex (Heat/Cool) - Honeywell UDC2800 Product Manual

Chapter 5 - Monitoring and Operating the Controller
Step Operation
4 Adjust LSP2
value
5 Switch to
"Automatic"
Mode
6 Show Tuning
Prompt
7 Tuning in
operation
Table 5-9: Procedure for Using BLENDED TUNE at Start-up for Duplex Control
Step Operation
1 Configure
LSP1
2 Adjust LSP1
value
3 Switch to
"Automatic"
193
Press
Increment
key or
Decrement
key
Man Auto
key
Lower
Display key
Increment
key or
Decrement
key
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.
Press
Lower Display key
Increment key or
Decrement key
Man Auto key
Result
Until LSP2 is a value within the Cool Zone (output
below 50%).
Until "Auto" appears (on controllers with Manual
option).
Until "TUNE OFF" is shown in the lower display.
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.
Result
Until (Local Setpoint 1) shows in
SP
the lower display.
Until the Setpoint is to the desired
value.
Until "Auto" appears (on controllers
with Manual option).