Frequency Inverter DF51... - Moeller.com.tr

PRG ENTERPRG ENTERPRG ENTERSerial interface (Modbus)04/07 AWB8230-1541GBTechnical features of the serial interface1HzAPOWERALARMHzAPOWERALARMHzAPOWERALARMI ORUNPRGI ORUNPRGI ORUNPRGFigure 158:Serial interface RS 485 (RJ 45 plug)X Open the black protective cap 1 .h Do not connect terminals 1 to 4, 7 and 8. They are usedX Plug the <strong>com</strong>munications cable into the free RJ 45 socket 2 .by the DF51 system for internal data transfer.hOpen the protective cap, but do not remove it.The DF51 is connected through its RJ 45 socket which is locatedbehind the keypad’s black protective cap.hNo tools are required to fit and remove the optionalkeypads, LED displays and plug-in adapters.h Attention!Fit and remove the keypad, LED display or plug-in adapteronly under no volt conditions and without using force.Table 35: PIN allocation, RJ 45 (RS 485)hThe network cable must have a bus termination resistor(120 ohm) connected at each physical end to preventreflections and the resulting transmission faults.The DF51 frequency inverter has no internal bustermination resistor. When a DF51 is connected at the endof a bus conductor, the bus termination must beconnected externally (pin 5 and 6). Keep in mind thenetwork conductor’s impedance.Pin Designation Description123456781 – Not connected2 – Not connected3 – Not connected4 – Not connected5 SP Send/receive, positive data channel6 SN Send/receive, negative data channel7 – Not connected8 – Not connected144