6.3
YDOA Specific Alarms
The following alarms are specific to the YDOA I/O pack.
33-129
Description
Logic Signal [ ] Voting Mismatch
Possible Cause
In a TMR application, the values for the specified signal do not agree between R, S, and T I/O packs.
Solution
•
Verify that R, S, and T I/O pack configurations are equal to ToolboxST configuration.
•
Check the I/O pack power and networking.
•
Check the I/O pack mounting on terminal board.
•
Replace the I/O pack.
130-141
Description
Relay circuit [ ] fuse(s) blown
Possible Cause
The I/O pack fuse status feedback indicates a possible blown fuse.
Solution
Perform the following items in the following order:
•
Using the following fuse table
, check the fuse(s) in the appropriate terminal board for a possible
blown fuse.
•
Verify the contact wetting/input power to the terminal board.
•
Verify the terminal board configuration and jumper settings (on TRLYH1B, S1B, or WROBH1A).
•
Verify that the I/O pack output and fuse diagnostics are enabled properly in the ToolboxST configuration.
•
Confirm that all connectors, power plugs, I/O packs, and daughterboards are fully seated.
•
If the problem persists, perform the following:
−
Replace the I/O pack.
−
Replace the WROB, F, or G daughterboard or the WPDF daughterboard.
−
Replace the terminal board. (This requires a ToolboxST configuration Build and Download to update the terminal
board serial number.)
138
GEH-6855_Vol_II
GEH-6855_Vol_II Mark VIeS Functional Safety Systems Volume II
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