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promesstec GmbH
I Niedersachsenstraße 4 I D- 48465 Schüttorf I Tel.:+49 (0)5923/ 90 229 0 I Fax:+49 (0)5923/ 90 229 29
E-Mail: [email protected] I Internet: www.promesstec.com
If the self-tuning is active, the "Automatic setting" can also be used, the self-tuning
then uses these values as initial situation.
Advantages of self-optimization:
1. In contrast to the "auto setting", the self-tuning has less negative influence on
the process.
2. Unlike the "auto-setting", the self-tuning does not change the rule type, it is al-
ways the PID control.
3. Occasional changing of the setpoint during self-tuning is allowed.
6.18 Automatic setting
Automatic adjustment is performed to the adjusted setpoint. The pro-
cess oscillates around the setpoint durig the adjustment, a significant
adjustment of the setpoint during or after the automatic adjustment
leads to undesired control results and can cause damage.
Automatic setting should be performed under the following conditions:
-
Initial setup of process control
-
The setpoint has changed significantly from the last automatic setting
-
The control behavior is unsatisfactory
Switching on the automatic setting:
1. The system is fully installed
2. The controller is at factory settings for PID control.
Factory setting:
PB1=PB2=10°C
TI1=TI2=100sec.
TD1=TD2=25,0sec.
You can also set other values, but PB1 and TI1 resp.
PB2 and TI2 must be unequal to ZERO, otherwise
the automatic setting is deactivated.
3. Adjust the set point to or slightly below the desired
value.
4. press
up to
appears on the display.
5. Press
for 3 sec. The upper display starts flashing
and the automatic setting begins.
Note:
The ramp function, external setpoint setting and pump control are deactivated
during automatic setting.
Condition:
PB1≠0, TI1≠0
if
PB1,TI1,TD1
selected
PB2≠0, TI2≠0,
if
PB2, TI2, TD2
selected
