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 40: 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:
Function not active
Limitation deactivated.
Function active
Limitation activated.
Adjust setting limits
Parameters
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 setting range
8.6.9.
Speed reduction before reaching setpoint position
Characteristics
The function adapts the setpoint depending on the error variable compared to the
setpoint. In case of a low error variable compared to the setpoint, the actuator runs
at low speed. For a high error variable, the actuator runs at maximum speed. The
maximum speed is then equal to the current speed.
Application
For modulating duty with high positioning accuracy.
Activate speed reduction before reaching setpoint position
Required user level:
Specialist (4)
or higher.
Customer settings M0041
Speed functions M1699
Speed functions M2148
Speed red.prior setp. M0835
Default value:
Function active
Setting values:
Function not active
<Speed reduction> function deactivated.
64
Actuator controls
Application functions
ACV 01.2/ACVExC 01.2 Profibus DP