7-8 B90 LOW IMPEDANCE BUS DIFFERENTIAL SYSTEM – INSTRUCTION MANUALTARGETS MENU CHAPTER 7: COMMANDS AND TARGETS7• How often the test is performed: Every 10 to 60 seconds.• What to do: Check that Ethernet cable(s) are properly connected. Check that configuration for the SNTP servercorresponds to the actual server settings. Check connectivity to the server (ping the server IP address.• Latched target message: No.• Description of problem: A discrepancy has been detected between the actual and desired state of a latching contactoutput of an installed type “4L” module.• How often the test is performed: Upon initiation of a contact output state change.• What to do: Verify the state of the output contact and contact the factory if the problem persists.• Latched target message: No.• Description of problem: A data item in a configurable GOOSE data set is oscillating.• How often the test is performed: Upon scanning of each configurable GOOSE data set.• What to do: The “xxx” text denotes the data item that has been detected as oscillating. Evaluate all logic pertaining tothis item.• Latched target message: No.• Description of problem: Any device settings were changed over any available interface.• How often the test is performed: On any setting changes, when new settings were written to device.• What to do: Verify that the setting change was legitimate and essential for proper functioning of the protection andcontrol system.• Latched target message: No.• Description of problem: The front panel is not communicating with the CPU module.• How often the test is performed: Every five seconds.What to do: Open the front panel and check the connection between the CPU module and the front panel, then restart therelay in EnerVista under Commands > Relay Maintenance > Reboot Relay or by powering the relay off and on. If troublepersists, contact the factory.• Latched target message: No.• Description of problem: The graphical front panel firmware revision is not synchronized with that of the CPU module inthe relay.• How often the test is performed: Whenever connection is established between the graphical front panel and the CPUmodule in the relay.• What to do: Perform UR firmware upgrade with the graphical front panel connected to the CPU module in the relay. Itcan be done using any communication interface (Ethernet or USB). This synchronizes the graphical firmware revisionwith that of the relay. If trouble persists, contact the factory.MAINTENANCE ALERT:4L DiscrepancyMAINTENANCE ALERT:GGIO Ind xxx oscillMAINTENANCE ALERT:Setting ChangedMAINTENANCE ALERT:Front Panel TroubleMAINTENANCE ALERT:GFP Version Mismatch
