Behaviour On Loss Of Process Setpoint; Inverse Operation; Internal Process Setpoint - AUMA AC 01.2 Manual

Application functions
I/O interface
Internal setpoint
Information
8.5.4.

Behaviour on loss of process setpoint

Internal setpoint 1
Internal setpoint 2
Failure behaviour
Last setpoint
8.5.5.

Inverse operation

Function not active
Function active
8.5.6.

Internal process setpoint

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Setpoint source M0743
Default value: I/O interface
Setting values:
The process setpoint is defined via an analogue input (AIN 1 or AIN 2) of the I/O
interface.
The process setpoint is generated internally via actuator controls: parameters Internal
setpoint 1 M0749 / Internal setpoint 2 M0750
To use internal setpoint 2, a digital input must be configured accordingly.
Customer settings M0041
Process controller M0742
Beh. setpoint failure M0747
Default value: Internal setpoint 1
Setting values:
In case of process setpoint signal loss, the actuator controls switch to the internal
setpoint 1. Parameter Internal setpoint 1 M0749
In case of process setpoint signal loss, the actuator controls switch to the internal
setpoint 2. Parameter Internal setpoint 2 M0750
In case of process setpoint signal loss, failure behaviour procedure is activated.
Parameter Failure behaviour M0378
In case of process setpoint signal loss, the last available process setpoint will still
be used as setpoint.
As standard, the valve is opened by the modulating actuator as soon as the actual
process value falls below the process setpoint. Depending on the process, it may,
however, be necessary that the valve closes as soon as the actual process value
falls below the process setpoint. In this case, the respective parameters are used to
set the process controller to inverse operation.
Customer settings M0041
Process controller M0742
Inverse operation M0748
Default value: Function not active
Setting values:
Inverse operation is deactivated.
Inverse operation is activated.
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 %
Actuator controls
AC 01.2/ACExC 01.2