
6.5
Fault State behaviour in case of bus communication loss
The fault state behaviour of the Foundation Fieldbus function blocks (AOFB
or DOFB) have to be configured to activate the failure behaviour in case of
Foundation Fieldbus communication loss.
The fault state behaviour is configured via Foundation Fieldbus by means of
a configuration software.
For further information, please refer to “Manual (Device integration Fieldbus)
AUMATIC AC 01.1/ACExC 01.1 Foundation Fieldbus”.
6.6
Failure behaviour in case of analogue signal loss (option)
The operation mode FAILURE enables an initiation of failure operations in
case of signal loss of an analogue 4 – 20 mA setpoint signal.
If the FAILURE mode is enabled, the display indicates:
Conditions:
.
in addition to the Foundation Fieldbus interface, the AUMATIC is
equipped with a further parallel interface (refer to page 66).
.
the AUMATIC is equipped with additional control inputs (refer to page
63).
Failure behaviour: switch on or off
Æ
Via the menu to parameter:
MAIN MENU (M0)
SETTINGS (M1)
FAILURE BEHAVIOUR (M15)
FAILURE BEHAVIOUR (M1510)
Default value:
OFF
Description of the parameter settings:
OFF
Failure behaviour is switched off.
GOOD SIGNAL FIRST
A failure operation is only initiated when no wire break is recognised after
switching on, but wire break is recognised later through loss of signal.
With this setting, it is ensured that the actuator does not perform a preset
failure action (failure position) when switched on without signal E1 con-
nected.
FAIL IMMEDIATE
A failure operation is initiated in case of cable break.
37
Actuator controls
Manual
AUMATIC AC 01.1/ACExC 01.1 Foundation Fieldbus
EDIT
M1510
FAILURE BEHAVIOUR
OFF
:EDIT
↵
:OK
C:ESC
FAILURE MODE
S0