Digital inputs M0116
Analogue inputs M0389
Example
●
Use digital inputs DIN 2 to 4 for operation commands:
Signal DIN 2 M0120
=
CLOSE
Signal DIN 3 M0119
=
OPEN
Signal DIN 4 M0118
=
STOP
●
Use digital input DIN 6 for manual change-over:
Signal DIN 6 M0121
=
I/O interface
(wiring diagram designation:
I/O inter-
face
)
Information
The logic for the digital inputs may be inverted. Depending on the parameter setting
(e.g.
Coding DIN 6 M0128
), the input is either
High active
or
Low active
. Default
setting is
High active
.
Manual change-over via I/O interface input
Switching behaviour for coding
High active
(Default factory setting)
●
Input
I/O interface
= low level (0 V DC or input open):
Actuator controls react to operation commands via fieldbus only.
●
Input
I/O interface
= high level (standard: +24 V DC):
Actuator controls react to parallel interface signals only.
Irrespective of the signal assignment of the inputs of the parallel interface, the
fieldbus communication with the DCS will remain intact.
Change-over to passive channel
Required user level:
Specialist (4)
or higher.
Device configuration M0053
Application functions M0178
Activation M0212
Fieldbus operation M1236
Default value:
Commands&feedback
Setting values:
Commands&feedback
Operation commands can be executed both via fieldbus and the inputs of the parallel
interface (I/O interface).
Feedback only
Operation commands are exclusively permitted via parallel interface (I/O) interface.
Fieldbus is only used for feedback signals.
8.12.
Auto change-over I/O (during fieldbus failure)
Requirements
The function is only available for a combination of additional bus inputs or parallel
interface (I/O) and a fieldbus interface.
Properties
If this function is activated, automatic change-over to the parallel interface (I/O) will
be performed on loss of fieldbus communication.
Change-over is performed before activation of <Failure behaviour> or <EMERGENCY
behaviour>.
Activate auto change-over I/O
Required user level:
Specialist (4)
or higher.
Device configuration M0053
Application functions M0178
Activation M0212
Auto change-over I/O M0790
Default value:
Function not active
Setting values:
Function not active
<Auto change-over I/O (fieldbus failure> function deactivated.
77
Actuator controls
ACV 01.2/ACVExC 01.2 Profibus DP
Application functions