Danfoss VLT 2800 Series General Information Manual

Also see for VLT 2800 Series: Instruction manual Manual Quick guide Operating instructions Operating instructions

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Danfoss VLT 2800 Series General Information Manual Manual pdf 84 page image

Serial communication500 Address(BUS ADDRESS)Value:Parameter 500 Protocol = FC protolkol [0]0 - 247 1Parameter 500 Protocol = Metasys N2 [1]1 - 255 1Parameter 500 Protocol = MODBUS RTU [3]1 - 247 1Function:This parameter allows the allocation of an address toeach variable frequency drive in a serial communica-tion network.Description of choice:The individual variable frequency drive must be allo-cated a unique address.If the number of units connected (variable frequencydrives + master) is higher than 31, a repeater must beused.Parameter 500 Address cannot be selected via theserial communication, but must be preset via the con-trol unit.501 Baudrate(BAUDRATE)Value:300 Baud (300 BAUD) [0]600 Baud (600 BAUD) [1]1200 Baud (1200 BAUD) [2]2400 Baud (2400 BAUD) [3]4800 Baud (4800 BAUD) [4]9600 Baud (9600 BAUD) [5]Function:This parameter is for programming the speed at whichdata is transmitted via the serial port. Baud rate is de-fined as the number of bits transmitted per second.Description of choice:The variable frequency drive's transmission speedmust be set at a value corresponding to the transmis-sion speed of the master.Parameter 501 Baudrate cannot be selected via theserial port, but must be preset via the operating unit.502 Coasting Stop(COASTING SELECT)Value:Digital input (DIGITAL INPUT) [0]Serial port (SERIAL PORT) [1]Logic and (LOGIC AND) [2]Logic or (LOGIC OR) [3]Function:Parameters 502-508 allow a choice between control-ling the adjustable frequency drive via the digital inputsand/or via the serial port.If Serial port [1] is selected, the relevant command canonly be activated if a command is given via the serialport.In the case of Logic and [2] the function must also beactivated via a digital input.Description of choice:The table below shows when the motor is running andwhen it is coasting, when each of the following is se-lected: Digital input [0], Serial port [1], Logic and [2] orLogic or [3].NOTENote that Coasting stop and Bit 03 in thecontrol word are active at logic '0'.Digital input [0]Dig. input Ser. port Function0 0 Coasting0 1 Coasting1 0 Motor running1 1 Motor runningSerial port [1]Dig. input Ser. port Function0 0 Coasting0 1 Motor running1 0 Coasting1 1 Motor runningLogic and [2]Dig. input Ser. port Function0 0 Coasting0 1 Motor running1 0 Motor running1 1 Motor runningVLT® 2800 Series= factory setting, () = display text, [] = value for use in communication via serial communication port84 MG.27.A2.22 - VLT ® is a registered Danfoss trademark