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

PresentationThe Jbus/Modbus communication option enablesSepam 2000s to be connected to a remote monitoringand control system equipped with a master Jbus/Modbuscommunication channel and a physical linkof the RS 485 2 or 4-wire topology type, or anotherinterface equipped with an appropriate converter.The Jbus protocol used by Sepam 2000is a compatible sub-group of the Modbus (1) protocol(a Modbus master can communicate with severalSepam 2000s).All the Sepam 2000s can be equipped withthe Jbus/Modbus serial communication option.(1)Modbus is a Modicon patented trademark.ConnectionSee “RS 485 network connection guide“.Functions supportedby Jbus communicationSepam 2000’s Jbus protocol supports 11 standardJbus functions:c function 1: reading of n output or internal bits,c function 2: reading of n input bits,c function 3: reading of n output or internal words,c function 4: reading of n input words,c function 5: reading of 1 bit,c function 6: reading of 1 word,c function 7: high-speed reading of 8 bits,c function 8: reading of diagnosis counters,c function 11: reading of Jbus event counters,c function 15: writing of n bits,c function 16: writing of n words.The following exception codes are supported:c 1: unknown function code,c 2: incorrect address,c 3: incorrect data,c 4: Sepam 2000 not ready (Sepam 2000 is faulty),c 7: not acknowledged (remote reading and setting).Data availableMeasurement readoutc phase currents,c line to line voltages,c frequency,c real and reactive power, and power factor,c accumulated real and reactive energy,c peak demand phase current,c peak demand real and reactive power,c tripping currents,c temperatures,c thermal capacity used,c number of starts and inhibit time,c running hours counter.The measurements presented in a Sepam 2000 depend on the type of Sepam 2000.Readout of control logic resource statusc event counter values,c logical input status,c status of the 96 remote control bits (KTC),c status of the 64 remote annunciation bits (KTS).Remote controlc writing of 32 latched remote control orders,c writing of 64 impulse remote control orders.Other functionsc time tagging,c remote reading of Sepam 2000 settings (remote reading),c remote setting of protections and control logic time delays (remote setting);c transfer of disturbance recording data.Characteristicstype of transmissionasynchronous serialprotocolJbus slaverate 300, 600, 1200, 2400, 4800, 9600,19200, 38400 bauds. (1)data formats1 start, 8 no parity bits, 1 stop.1 start, 8 even parity bits, 1 stop.1 start, 8 odd parity bits, 1 stop.RS 485 electrical interfacecomplies with EIA RS 485 standardmaximum distance1300 mbranch distanceless than 3 mnumber of Sepam 2000s on a line 31number of masters 1type of connector9-pin sub-D socketresponse timeless than 10 msinsulation testIEC 60255-41.2 impulse wave / 50 micro-seconds 1 kV in differential mode3 kV in common mode1.4 kVdc rms - 50/60 Hz - 1 mnIEC 60255-10.5 kV in differential mode1 MHz damped oscillating wave 1 kV in common modeelectromagnetic compatibilitysee Sepam 2000 general characteristics(1)the 300 and 6000 baud rates may not be used with the ACE 909 converter.2 Jbus/Modbus communication