Graco 309077, Инструкция-перечень запасных частей, Страница: 20 / 76

20 309077
Installation
Auto Tuning the Controllers
After the critical controller settings have been checked,
complete the following procedures:
Changing the Set Point
Auto Tune Process
Changing the Set Point
During the auto tune process, the temperature can rise
as much as 40
higher than the set point. If the mate-
rial reacts adversely to higher temperatures, the set
point should be lowered approximately 40
to avoid the
adverse reaction. After the auto tune process is
completed, the set point can be raised back to the
desired temperature.
To change the set point, perform the following proce-
dure:
1. Change from the function mode to the level mode
using the mode key (X).
2. Change display 1 to show the Level 0 mode, as
shown in Fig. 14.
3. Change from the level mode to the function mode
using the mode key (X).
4. Using the down arrow key (53), change display 2
to show the set point function, as shown in Fig. 14.
5. Change the set point setting by performing Per-
form step 5.a or 5.b depending on your situation in
the auto tune process. See Fig. 14.
a. If starting the auto tune process, lower the set
point setting approximately 40 to avoid an
adverse material reaction.
b. If finishing the auto tune process, reset the set
point, raising the setting to the desired material
temperature.
Fig. 14
SET POINT
FUNCTION
FUNCTION
MODE
LEVEL
MODE
NOTE:
Display 1 shows the actual temperature.
Display 2 shows the set point.
6. Repeat steps 1 through 5 to change the set point
for the other five controllers.
7. Go to the next procedure to perform the auto tune
process.
Auto Tune Process
The auto tune process adjusts the P, I, and D settings
to the optimal level at each controller.
With the unit at ambient temperature, auto tune each
temperature controller by performing the following
procedure:
NOTE: The auto-tuning process can take from 5 min-
utes to 2 hours to complete. The controllers
can be auto-tuned at the same time.
1. Using the down arrow key (Y), change display 2,
which should show the stop mode.
2. Press the down arrow key (Y) again to change the
status to the run mode, as shown in Fig.15. Verify
that the stop light is off (see Fig. 6.).
NOTE:
In the run mode, the zones are heated while
the configuration changes are programmed
into the controller. Auto tuning cannot be exe-
cuted when the controller is in the stop mode.
Fig. 15
RUN/STOP
FUNCTION
FUNCTION
MODE
LEVEL
MODE
3. Immediately after activating the run function,
change from the function mode to the level mode
using the mode key (X).
4. Change display 1 to show the Level 1 mode, as
shown in Fig. 16.
5. Change from the level mode to the function mode
using the mode key (X).