Danfoss VLT AQUA Drive FC 202 Design Manual

Also see for VLT AQUA Drive FC 202: Service guide Installation guide Installation guide Operating guide Installation guide

Contents

Bits no. 12–15 transfer parameter commands from masterto slave and return processed slave responses to themaster.Bit no. Parameter command15 14 13 120 0 0 0 No command0 0 0 1 Read parameter value0 0 1 0 Write parameter value in RAM (word)0 0 1 1 Write parameter value in RAM (doubleword)1 1 0 1 Write parameter value in RAM andEEprom (double word)1 1 1 0 Write parameter value in RAM andEEprom (word)1 1 1 1 Read/write textTable 7.3 Parameter Commands Master⇒SlaveBit no. Response15 14 13 120 0 0 0 No response0 0 0 1 Parameter value transferred (word)0 0 1 0 Parameter value transferred (doubleword)0 1 1 1 Command cannot be performed1 1 1 1 text transferredTable 7.4 Response Slave⇒MasterIf the command cannot be performed, the slave sends thisresponse:0111 Command cannot be performed- and issues the following fault report in the parametervalue (PWE):PWE low(Hex)Fault report0 The parameter number used does not exist1 There is no write access to the defined parameter2 Data value exceeds the parameter limits3 The sub index used does not exist4 The parameter is not the array type5 The data type does not match the definedparameter11 Data change in the defined parameter is notpossible in the present mode of the frequencyconverter. Certain parameters can only bechanged when the motor is turned off82 There is no bus access to the defined parameter83 Data change is not possible because factory setupis selectedTable 7.5 Fault Report7.4.8 Parameter Number (PNU)Bits no. 0–11 transfer parameter numbers. The function ofthe relevant parameter is defined in the parameterdescription in the Programming Guide.7.4.9 Index (IND)The index is used together with the parameter number toread/write-access parameters with an index, for example,15-30 Alarm Log: Error Code. The index consists of 2 bytes,a low byte and a high byte.Only the low byte is used as an index.7.4.10 Parameter Value (PWE)The parameter value block consists of two words (4 bytes),and the value depends on the defined command (AK). Themaster prompts for a parameter value when the PWE blockcontains no value. To change a parameter value (write),write the new value in the PWE block and send from themaster to the slave.When a slave responds to a parameter request (readcommand), the present parameter value in the PWE blockis transferred and returned to the master. If a parametercontains not a numerical value but several data options,for example, 0-01 Language [0] English, and [4] Danish,select the data value by entering the value in the PWEblock. See example - selecting a data value. Serialcommunication is only capable of reading parameterscontaining data type 9 (text string).15-40 FC Type to 15-53 Power Card Serial Number containdata type 9.For example, read the unit size and mains voltage range in15-40 FC Type. When a text string is transferred (read), thelength of the telegram is variable, and the texts are ofdifferent lengths. The telegram length is defined in thesecond byte of the telegram, LGE. When using texttransfer, the index character indicates whether it is a reador a write command.To read a text via the PWE block, set the parametercommand (AK) to ’F’ Hex. The index character high-bytemust be “4.”Some parameters contain text that can be written via theserial bus. To write a text via the PWE block, set theparameter command (AK) to ’F’ Hex. The index charactershigh-byte must be “5.”RS-485 Installation and Set... VLT® AQUA Drive FC 202 Design GuideMG20Z102 - VLT® is a registered Danfoss trademark 1697 7