AUMA AC 01.2 Manual page 65

Actuator controls
AC 01.2/ACExC 01.2
Master actuator (MA)
Figure 46: Schematic representation of the function of a Lift Plug Valve
The master actuator may generally only be operated in direction OPEN or CLOSE
if the slave actuator is fully opened. This is ensured by a signal of the slave actuator
to the digital LPV Sync In input of the master actuator as soon as the slave actuator
has reached end position OPEN. The slave actuator may generally only be operated
in direction CLOSE if the master actuator is in end position OPEN or CLOSED. This
is ensured by a corresponding signal of the master actuator to the digital LPV Sync
In input of the slave actuator. However, it can always be operated in direction OPEN.
If the master actuator receives an operation command for direction OPEN or CLOSE,
it will first send a command to the slave actuator for operation in direction OPEN.
Once the slave actuator has reached end position OPEN and sends the feedback
signal, the master actuator executes the requested operation command itself. After
reaching the desired end position, it will request the slave actuator to run to end
position CLOSED.
Figure 47: Schematic representation of signals and operation commands between
master and slave actuator as well as signals of the master actuator to the DCS
Example of digital input configuration
Required user level: Specialist (4)
Device configuration M0053
I/O interface M0139
Digital inputs M0116
Use input DIN 7 for signal LPV system ok,
Application functions
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