3AXD50000011888 ModbusRTU Setup F-5
Now we’re ready to begin controlling/monitoring the drive over fieldbus:
The Fieldbus Operating Mode species some digital inputs that must be turned on:
Figure F-5
Digital inputs
1
2
3
4
5
6
DI1
DI2
DI3
DI4
DI5
DI6
Local Stop (0) / Start (1)
Local/Remote (0=Local /1=FBA+MCW bit2)
Run enable
Constant Speed 2 (1 = On)
Reset Fault
External Event, Vibra�on Switch
XDI
DI3 = ON Run Enable
DI6 = ON Vibration Switch OK
DIIL= ON Motor Thermostat OK
Note: The above inputs must be jumpered to +24V if not wired to their respective eld devices. There is no way to “program
them out.” (turn them ON all the time in software)
Finally, we need to tell the drive to respond to eldbus commands:
DI2 = ON This puts the drive in Fieldbus Control Mode (EXT2 Control Location)
Now, let’s look at the Control Word bit structure. These are the bits we will turn on and off to control the drive:
Control Word Bit # Function
Decimal number to write into
control word to turn this bit “ON”
0 Trickle Heating 1
1 De-Ice Mode 2
2 Start Forward 4
Turning a bit ON will cause that function to start. Only one function should be ON at a time.
So, let’s tell the drive to start and run at 100rpm:
Write a value of 100 to REF1 for the speed reference. (which is the speed scaling value in par 46.01)
Set CW bit 2=1 by writing a decimal value of 4 to the CW. (drive should start)
Figure F-6
You should now see a variety of data coming back from the drive. Compare these values to the values you see in the drive
parameters.
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