GE GEK 106168E manual Remote Communications

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2. OPERATION LOGIC

2.6. REMOTE COMMUNICATIONS

The relay has 2 serial gates and three connectors. Gate 1 can be reached from the front of the relay in connector 1 (PORT 1 connector) or from the rear (PORT 2 connector). The second gate can be reached from connector 3 (PORT 3 connector) which is located on the rear.

There are different models, each with a different physical connection for the PORT 3 connector (RS-232/RS-485 or fiber-optic). In the "RS232" models the three connectors are RS232. In the "RS232 and fiber-optic" models the PORT1 and PORT2 connectors are RS232 while the PORT3 connector is replaced by a fiber-optic connector.

The PORT 1 connector has priority over the PORT 2 connector and is selected when the DCD (Data Carrier Detect) signal is activated. Figure 8 shows how to make the connections to a personal computer.

Gate 1 (PORT 1 and PORT 2 connectors) and 2 (PORT 3 connector) are independent and the unit can serve them simultaneously.

The communications protocol is the same used for the rest of the GE digital protection systems and requires the use of the GE-LOCAL software. PORT 3 protocol can be chosen between M-LINK and ModBus RTU. The protocol is highly reliable and allows communication with different protection systems. It guarantees very efficient data transfer (especially for the oscillography and other large files) along with error detection and automatic communication recovery.

The status of the local/remote communication is indicated on the front of the unit by LED indicator 16 (the last LED in the right-hand column, according to the default configuration.) Local communication refers to communication via the keyboard/display (local display showing any information except for the initial DBF GENERAL ELECTRIC screen), or via communications gate 1 (PORT 1, PORT2 connectors), and remote communication refers to connection via gate 2 (PORT 3 rear connector).

Local and remote communications can exist at the same time, although there is only one possibility for changing settings and carrying out operations, since this can only be done with the communication which has priority (local communication) while the other is limited only to accessing information. When the local communication is interrupted, either by the disconnection of PORT 1 connector or because the HMI is on the initial screen (a situation which can be caused intentionally, or automatically if no key has been pressed for 15 minutes), the remote communication recovers the ability to modify settings and carry out operations.

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DBF Breaker Failure Protection

GEK-106168E

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Contents GE Power Management 3KRQHHVFULSWLRQ0DQXDO*RI.\RXUFRGHTXHVWLRQ Ruvxjjhvwlrqd Page Table of Contents Installation and Maintenance Rear View 226B7412 Sheet List of FiguresDBF Breaker Failure Protection GEK-106168E Analysis General DescriptionProtection ∙ Breaker internal arc detection MonitoringDBF Breaker Failure Protection GEK-106168E Low-Level Overcurrent Breaker Failure Unit 50BF 1P Digital Signal Input # TerminalsProtection Functions Overcurrent UnitsBreaker Arc Detection Device Reset of Latching RelaysGround Overcurrent Breaker Failure Unit Breaker Failure without current or very low currentAssociated Breaker Status Internal Protection Status SignalsMonitoring and Recording Functions MeasurementGroup Status Comment Optional Exp. Board Optional Exp.Boar Latched#2 Closed Optional Exp. Board Latched#1Closed Internal Communication Status Signals Circuit Breaker Breaking Capacity Monitoring LED Left Column Right ColumnOscillography Analysis FunctionsBUILT-IN SELF-CHECKING Unit Event RecorderEvents to Trigger Oscillography INPUT-1 INPUT-0 Tables of SettingsControl Table Selection Active TableFunction Configurable Inputs and OutputsTime Synchronization Outputs MAN-MACHINE Interface HMI Remote Communications Active table setting group Breaker Setting GroupFunctions Permitted Common to all tables Range Default Step Oscillography MaskIndependent for each table Range Default Step 50BF Settings Internal Arc SettingsComments on Settings DBF Breaker Failure Protection GEK-106168E Ground Ranges Models DBF PhaseModel List DBFElectrical Technical CharacteristicsMechanical Test Standard Class CommunicationsStandards DBF Breaker Failure Protection GEK-106168E Internal Construction Physical DescriptionCase Electrical ConnectionsDBF Breaker Failure Protection GEK-106168E CPU Board Operating TheoryMagnetic Module Keyboard and Display Power SupplyPanel Insulation Tests Connections and Necessary EquipmentVisual Inspection Power Supply Relay SettingIndicators Communications IRIG-B Synchronizing Input InputsDigital Inputs 1 50BF 1P Unit Test Functions2 50BF 3P Unit Test Neutral Overcurrent Unit Test Internal ARC Test4 3P no I Function DBF Breaker Failure Protection GEK-106168E Timing Measurement Relay Measurement TestsCurrent Measurement DBF Breaker Failure Protection GEK-106168E CONNECTION-TO-GROUND and Disturbances Suppression InstallationMaintenance DBF Breaker Failure Protection GEK-106168E DBF General Electric Keyboard and DisplayACT Menu TreeSET INFView Protection Settings Settings Group SET KEYView Settings Protection Modify Settings ProtectionConfirm Level Valid Range Setting OUT RangeStatus Information Group INF KEYSET DATE/TIME Control Group ACT KEYSingle KEY Menu Configuration Menu DBF Breaker Failure Protection GEK-106168E Figures Breaker Failure Logic 189C4114 Sheet External Connections 189C4114 Sheet Front View 226B7412 H9 Rear View 226B7412H10 Dimensions Diagram 226B6086H10 Panel Drilling 226B6086H10 RS232 Connection DBF Relay to PC
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