Hart Field Device Not Write Protected In Locked Mode; Outputs Are Disabled; Cold Junction Sensor; Cold Junction Difference Detected - GE Mark VIeS System Manual

2786-2817
Description IOPoint [ ] - HART field device not write protected in locked mode
Possible Cause It is expected that field devices be put into locked mode via an AMS or HART handheld communicator
when the Mark VIeS is in locked mode. This alarm indicates that the device on the specified channel is not in a
write-protected or secured mode while the controller is in locked mode.
Solution Refer to the field device manual to determine how to place the device in the write-protected mode. All devices
used in a safety-protected system must be able to be placed in a read-only mode.
2818
Description Outputs are disabled
Possible Cause Input voltage dropped below 18 V. I/O pack or module input power is required to be within range 28 V
±5%.
Solution Check the I/O pack or module power within the control cabinet.
2819-2820
Description Cold Junction Sensor [ ] failure
Possible Cause The Cold Junction temperature sensor on the terminal board failed to deliver an updated reading, most
likely due to hardware failure.
Solution
• Verify that the I/O module is properly seated on the terminal board.
• Replace the I/O module.
• Replace the terminal board.
2821
Description Cold Junction difference detected
Possible Cause The difference between the two local Cold Junction sensors on the terminal board exceeds 5°C (41 °F),
indicating a failed sensor. If ColdJuncType is set to Local, then the BackupCj will be used instead.
Solution
• Check for abnormal ambient air heat sources close to the module.
• Replace the terminal board.
2822
Description Internal hardware issue detected (code[ ])
Possible Cause An internal hardware issue has occurred, most likely due to an internal hardware failure. Possible causes
include:
• Internal power supply failure
• Internal data corruption (either due to a single-event upset or internal failure)
Solution
• Cycle power on the I/O module.
• Replace the I/O module.
224 GEH-6855_Vol_II GEH-6855_Vol_II Mark VIeS Functional Safety Systems Volume II
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