GEK-113032A W650 Wind Generator Protection System 5-1115 SETTINGS 5.8 RELAY CONFIGURATION5• COM1 (REMOTE) setting: defines whether the operation can be executed by communications through rear portCOM1.• COM2 (LOCAL) setting: defines whether the operation can be executed by communications through rear port COM2.We must note that this local port is the same as the front port (DB-9 connector). We can establish simultaneouscommunication with the relay through ports COM1 and COM2. However, it is not possible to use rear COM2 and thefront port simultaneously.• ETHER-MASTER setting: defines whether the operation can be executed by communications through theETHERNET.It must be taken into account that besides the master selection in the operations screen inside relay configuration, there isa hardware selection (with the operation pushbutton in the front part of the relay) to switch between local (COM2 and HMI)and remote masters (COM1 and ETHERNET) for operations.The following diagram shows an example of the operations internal logic.Figure 5–37: OPERATION LOGIC DIAGRAMCondition 1Condition nCondition 1Condition nSuccessOperationKeyboardPush buttonDigital inputOperation Bit(state)Condition 1Condition nInterlockingWithout interlocklogicInterlockingInterlockingOperations LogicTime OutResetCondition 1Condition n
