NORD Drivesystems BU0090 - Manual (Page 61)

6 Examples
BU 0090 GB 61
Example for the writing of a parameter (PKW data via USS protocol / Parameter string):
For example, in order to set the release time of the brake P114 (parameter number PNU = 114 / 72
hex
) of the
FI to 1 sec for parameter set 1, proceed as follows:
• Select parameter label PKE (AK =1 for change parameter value (word) and parameter number
PNU = 72
hex
)
• Taking the internal resolution of the frequency inverter into account (0.01sec) => for 1 sec there
must be a parameter value PWE of 1 / 0.01 = 100
dec
(64
hex
)
• Select parameter set 1 (IND = 0)
• Select order label 2 = change parameter value (word)
• Check response telegram (Read Parameter String)
The command Write Parameter String must be transferred with the following parameter Bytes DBB04 to
DBB16 and the corresponding parameter values:
Data Byte
in DB13 Value in
hex Meaning / Note
DBB4 40 Write the command number for the parameter string
DBB5 01 Slave address
DBB6 0A Number of parameter bytes, 0A
hex
corresponds to 10
dec
DBB7 00 Byte 0: Index
DBB8 02 Byte 1: Index PKW data
DBB9 20 Byte 2: parameter label PKE, order label 2 for change parameter value
DBB10 72 Byte 3: parameter label PKE, parameter number PNU
DBB11 00 Byte 4: Sub-index IND
DBB12 00 Byte 5: Sub-index IND, taking into account parameter set 1 = IND 0
DBB13 00 Byte 6: parameter value PWE1
DBB14 00 Byte 7: parameter value PWE1
DBB15 00 Byte 8: parameter value PWE2
DBB16 64 Byte 9: parameter value PWE2, 1sec corresponds to 64
hex
With this, the brake release time in P114 for parameter set 1 is changed to 1.00s.