Setting Range: Limit; Change-Over Between Open - Close Control And Setpoint Control - AUMA AC 01.2 Manual

Actuator controls
AC 01.2/ACExC 01.2
8.4.8.

Setting range: limit

Function not active
Function active
8.4.9.

Change-over between OPEN - CLOSE control and setpoint control

Condition
Travel can be limited in directions OPEN and/or CLOSE.
This prevents end position(s) OPEN and/or CLOSED from being approached in
modulating duty. The actuator stops when reaching the set limit value.
For OPEN - CLOSE control (LOCAL or REMOTE OPEN-CLOSE operation mode),
this limitation is not active. The valve can then be run into the end positions either
via the local controls or from remote.
Figure 39: Limitation of setting range
[1] Permissible actuator travel for setpoint control
[2] Permissible actuator travel for OPEN - CLOSE control
Activate limitation
Customer settings M0041
Positioner M0145
Limit setting range M0845
Default value: Function not active
Setting values:
Limitation deactivated.
Limitation activated.
Set limits
Customer settings M0041
Positioner M0145
Limit OPEN M0162
Limit CLOSE M0161
Default values:
Limit OPEN = 100.0 %
Limit CLOSE = 0.0 %
Setting ranges: 0.0 ... 100.0 % of travel
For actuators equipped with a positioner, it is possible to change over between OPEN
- CLOSE control (Remote OPEN-CLOSE) and setpoint control (Remote
SETPOINT).
For the change-over, a digital input for the signal MODE has to be available and
configured.
Configuration of digital input
Required user level: Specialist (4).
Device configuration M0053
I/O interface M0139
Digital inputs M0116
Application functions
53