Message explanations
A-40
385585/C
Corrective
actions:
Enable another position-reference system.
Check if reference system is sending data.
Check cabling from reference system.
Check that the reference system power for interface is OK. No corrective action if
it occurs infrequently.
Check that all plugs are inserted correctly.
Replace SBC and check reference system hardware.
On-board reference voltage error
Description:
A failing on-board reference voltage on the PS (Process Station) will lead to this
alarm.
Possible
consequences:
Since this alarm may be caused by a value out of limits for a number of internal
reference voltages, the functional consequences are unpredictable.
Corrective
actions:
•
Check power supplies connected to the PS (Process Station) rack/cabinet.
•
If OK, try to replace the PS. Note the alarm text, describe the current
operation executed and enclose this data when delivering the PS Kongsberg
Maritime Service.
•
Contact Kongsberg Maritime Service if this does not solve the problem.
Origin calibration error
Description:
This message is reported if the speed variation of data from the position reference
system is too high while the DP system tries to calibrate this reference system. As
long as it is not calibrated, the position reference system will not be accepted by
the DP.
This may be caused by a fault in the position reference system, or its interface
with the DP system.
The method of detection is the speed, continuously derived from the position
reference data.
Additional
information:
•
Limit (m/s).
•
Speed variation (m/s).
Possible
consequences:
The DP system will wait until the speed variation is less than the limit.
Corrective
actions:
Consider using a different position reference system as the reference origin
system.
Overrun error
Description:
This message may be caused by errors in the position-reference system setup/DP
setup. The data received does not match the configuration. No position from the
position-reference system is received which may be caused by:
Timeout.
No data sent from the position-reference system.
Possible
consequences:
No data received from the position-reference system. If no other position-
reference system is selected, you will get position dropout after 30 seconds.
Summary of Contents for cJoy OT
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