Execute last CMD
The actuator executes the last operation command before it is stopped.
If the last operation command was a setpoint definition via analogue input (AIN 1/AIN
2), the lower limit of the setpoint position is used (parameter Low limit AIN 1/Low
limit AIN 2).The actuator is operated to the defined end position, usually end position
CLOSED.
Behaviour depending on the selector switch position
Once the failure operation is triggered, the defined position is approached. If the
actuator is then moved to another position (e.g. by manual operation), it will try to
perform the set failure operation while the selector switch is in position Remote
control (REMOTE).
Information
To prevent a new approach to the failure position during manual operation, the se-
lector switch must be set to position Local control (LOCAL) or 0 (OFF) prior to
operating the handwheel.
9.2.4. Preset position: define
If the Approach position failure operation is set, the actuator runs to the preset failure
position indicated here.
Required access level: Specialist (4) or higher.
Customer settings M0041
Failure behaviour M0378
Fail.pos.OPEN CLOSE M0387
Default value: 50.0 %
Setting range: 0.0 ... 100.0 % (from end position OPEN to CLOSED)
9.2.5. Failure position MPV: define
This parameter is only available in multiport valve version.
If the Approach position failure operation is set, the actuator runs to the preset failure
position indicated here.
Required user level: Specialist (4) or higher.
Customer settings M0041
Failure behaviour M0378
Failure position MPV M1172
Default value: 0.0 °
Setting range: 0.0 ... 360 °
9.2.6. Delay time: set
A failure operation is only performed once the delay time has expired.This prevents
a short-term loss of signal, which does not have an effect on the process, from directly
starting a failure operation
Required user level: Specialist (4) or higher.
Customer settings M0041
Failure behaviour M0378
Delay time M0386
Default value: 00:03.0 min:s (3 seconds)
Setting range: 0.0 ... 30:00.00.0 min:s (30 minutes)
9.3. EMERGENCY behaviour
Application
The EMERGENCY behaviour can be used to determine the actuator behaviour in
an emergency.
Characteristics
●
The function <EMERGENCY behaviour> is initiated by the EMERGENCY signal.
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Actuator controls
AC 01.2/ACExC 01.2 Profinet Failure functions