K-WANG
Redundancy area Mark the Redundancy check box if the unit shall be set for redundant operation. This check box is only applicable for AI843 when configured via a CI840
ABB AI843 Configuration Module Parameters Tab
Grid Frequency area
Make the required choice in the Grid frequency drop-down menu.
Deactivate CJ channel area
Mark the Deactivate CJ channel check box if the Cold Junction channel shall not
be used and the supervision disabled.
Fix Junction Temperature area
Type the required value in the Fix Junction Temperature text field
Channel parameters tab
The Channel parameters tab shows the user parameters of the module. It shows
Filter time, Signal range and Cold junction temperature.
Channel area
Mark the Deactivate check box if the channel shall not be used.
Make the required choices in the Filter time, Signal range and Cold junction
temperature drop-down menus.
The service control is used for reading acyclic data and is only visible if the module
is configured via a CI840.
Redundancy Tab
The Redundancy Tab is only shown in Commissioning mode.
Module status area
In the Module status area you can see which I/O module that is addressed by
CI840. By clicking the Update button you update the status for which of the I/O
module that are the primary. The module has to be configured via a CI840.
Figure 39. AI843 - Service - Redundancy Tab
AI880
This module is only supported as direct I/O connected to AC800M.
About DTM
See About DTM on page 46.
Identification
See Identification on page 47.
If the AI880A are used in Safety applications there are restrictions on how to
access data and the HART parameter are recommended to be set to Read only.
Device specific HART commands are not predefined and can be implemented as
both read or write commands. If device specific commands are to be used the
parameter has to be set to Full mode.
Note: If the HART routing functionality of AI880A is not restricted by the
modules configuration settings (Read only or Disabled), the operation procedures
must include restrictions for use of this function.
If a write command is sent when the AI880A is in Read only mode the module
will return an error which is reported back to the AI880 DTM. The AI880 DTM
will display an error message “No connection” in the FBB view stating which
command that has failed. The AI880 DTM will also send an error report back to
the HART DTM and it is up to this DTM to decide how to act on the error
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