Sepam - HV/MV Protection and control units (ENG) - Trinet

ImplementationSetting the communicationparametersBefore a Sepam 2000 equipped with the Jbuscommunication system is put into service,3 parameters need to be set. These parametersare accessed in the setting terminal “Status” menu.The user presses the “code” key on the settingterminal, enters the password and can then modifythe communication parameters.selectiontransmission rate9600 bauds by defaultpress + or - for setting from 300 to 38400 baudsslave n° assigned to the Sepam 2000n° 001 by defaultenter directly for setting from 1 to 255parity: no parity, even parity, odd parityeven parity by defaultpress + or -These 3 parameters are saved in the event of a power failure.The Jbus slave number should be assigned before the Sepam 2000 is connectedto the communication network.The Jbus slave number is factory-set to 1 on all Sepam 2000s.The user sets the communication parameters before connecting the Sepam 2000to the communication network.The communication parameters may be changed while the Sepam 2000 is operatingwithout disturbing operation.Sepam 2000 ignores the first frame received after it is energizedor after the communication parameters are changed via the setting terminal.CE40Bindicatorsredgreencommunicationconnector(item 1B)Operating modesSepam 2000s have 2 indicators on the back, near the communication connector.They provide help for commissioning and diagnosis:c green light:The green indicator is activated by variations of the electrical signal on the RS 485network. When the master communicates with Sepam 2000, (in transmission orreceiving mode), the green indicator on each Sepam 2000 in the RS 485 networkblinks,c red light:the red light goes on when the Sepam 2000 communication coupleris in the initialization phase after being energized (initialization status)or after a communication coupler fault has occurred (fault status).The red light stays on for 5 to 6 seconds after the power is switched on, this beingthe duration of the Sepam 2000 communication coupler initialization phase.ABack of Sepam 2000 with communication option.The communication coupler may be in one of the four following states:c normal:the Sepam 2000 CPU and the communication coupler are functioning normally:the red lights on the front and back (item 1B) of Sepam 2000 are off; the green lighton the back is blinking,c downgraded: Sepam 2000 is experiencing a fault: the red light on the front is on.There is a break in the dialogue between the Sepam 2000 CPU and itscommunication coupler, but the coupler is working.All Jbus requests are ignored and give rise to the exception reply “Sepam 2000 notready” (the red light on the back is off),c initialization:the coupler is in the process of initializing after energizing or after it has been in faultstatus; the red light on the back stays on for 5 to 6 seconds,c fault:the communication coupler has detected an internal communication failure andis experiencing a fault, but Sepam 2000 is functioning correctly.The coupler is no longer communicating and the red communication coupler lightis on or blinking.Jbus/Modbus communication3