AUMA AC 01.2 User Manual

Setting values:
Function not active
Inverse operation is deactivated.
Function active
Inverse operation is activated.
8.5.6. Internal process setpoint
An internal process setpoint may be set with this parameter. The internal process
setpoint is used if:
●
Parameter Setpoint source M0743 is set to Internal setpoint or
●
Parameter Beh. setpoint failure M0747 is set to Internal setpoint 1 or Internal
setpoint 2.
Customer settings M0041
Process controller M0742
Internal setpoint 1 M0749
Internal setpoint 2 M0750
Default value: 50.0 %
Setting range: 0.0 ... 100.0 %
8.5.7. Setting procedure
The setting of the process controller largely depends on the area of controller
application. A PI controller suffices for most applications.
Procedure
1. Operate the controller as PI controller, i.e. set the parameters as follows:
- Proportional gain Kp = 1
- Reset time Ti = 1,000 s
- Rate time Td = 0
2. Double proportional gain Kp until the control loop starts to oscillate.
3. Reduce proportional gain Kp to 60 % of the set value.
4. Decrease reset time Ti until the error variable equals zero.
8.5.8. Proportional gain Kp: set
In the event of an error variable, the P portion immediately (i.e. actively) changes
the position value proportionally to the error variable.
If a small error variable already requires a major valve position adjustment, the
proportional gain Kp must be increased.
Information
If the reaction is too extreme (overshoot), the value must be reduced. If the reaction
is too weak, the value must be increased.
Customer settings M0041
Process controller M0742
Proport. gain Kp M0744
Default value: 1.0
Setting range: 0.1 ... 10.0
8.5.9. Reset time Ti: set
The reset time determines the I portion of the controller.The more inert a system,
the higher this value should be set.
Information
●
Increase Ti in case of propensity for oscillation.
●
Decrease Ti if the reactions are excessively delayed.
●
Starting value for fast processes (e.g. pressure): 10 s
●
Starting value for slow processes (e.g. temperature): 1000 s
Customer settings M0041
Process controller M0742
60
Actuator controls
Application functions AC 01.2/ACExC 01.2 Profinet

AUMA AC 01.2 Specifications

General

Brand	AUMA
Model	AC 01.2
Category	Control Unit
Language	English