Danfoss VLT 8000 AQUA series Operating Instructions Manual

Also see for VLT 8000 AQUA series: Instruction manual Operating instructions

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Danfoss VLT 8000 AQUA series Operating Instructions Manual Manual pdf 159 page image

VLT ® 8000 AQUAProgramming■ Serial communication 500-556In this parameter group, the serial communicationof the frequency converter is set up.In order to use serial communication, address andbaudrate must always be set. In addition, such presentoperational data as reference, feedback and motortemperature can be read via serial communication.500 Protocol(PROTOCOL)Value:✭FC protocol (FC PROTOKOL) [0]Modbus RTU (MODBUS RTU) [1]501 Address(ADDRESS)Value:Parameter 500 Protocol = FC protocol [0]0 - 126 ✭ 1Parameter 500 Protocol = MODBUS RTU [1] ✭ 1Function:In this parameter it is possible to allocate anaddress in a serial communication network toeach frequency converter.Description of choice:The individual frequency converter must begiven a unique address.If the number of units connected (frequency converter+ master) exceeds 31, an amplifier (repeater)must be used. Parameter 501 Address cannotbe chosen via serial communication, but mustbe set via the LCP control unit.502 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:In this parameter, the speed is programmed at whichdata is transmitted via serial communication. Baudrateis defined as the number of bits transmitted per second.Description of choice:The transmission speed of the frequency convertermust be set at a value that corresponds to thetransmission speed of the master. Parameter 502Baudrate cannot be selected via serial communication;it must be set via the LCP control unit.The data transmission time itself, which is determinedby the baudrate selected, is only part of thetotal communication time.503 Coasting stop(COASTING)Value:Digital input (DIGITAL INPUT) [0]Serial communication (SERIAL PORT) [1]Logic and (LOGIC AND) [2]✭Logic or (LOGIC OR) [3]Function:In parameters 503-508, a choice can be madeto control the frequency converter via the digitalinputs and/ or via serial communication.If Serial communication [1] is selected, the commandin question can only be activated if a commandis given via serial communication.If Logic and [2] is selected, the function must inaddition be activated via a digital input.Description of choice:The table below shows when the motor is running andis coasting when Digital input [0], Serial communication[1], Logic and [2] or Logic or [3] has been selected.NB!:Please note that terminal 27 and bit 03 of thecontrol word are active in the case of logic ’0’.Digital input [0] Serial communication [1]Serial SerialKl. 27 com. Function Kl. 27 com. Function0 0 Coasting 0 0 Coasting0 1 Coasting 0 1 Motor run.1 0 Motor run. 1 0 Coasting1 1 Motor run. 1 1 Motor run.Logic and[2] Logic or[3]Serial SerialKl. 27 com. Function Kl. 27 com. Function0 0 Coasting 0 0 Coasting0 1 Motor run. 0 1 Coasting1 0 Motor run. 1 0 Coasting1 1 Motor run. 1 1 Motor run.✭ = factory setting. () = display text [] = value for use in communication via serial communication portMG.83.A2.02 - VLT is a registered Danfoss trademark 159