Activating Drive Control Functions With Ach480/Ach580; Drive Control; Start/Stop Direction Control; Input Reference Select - ABB FBIP-21 BACnet/IP User Manual

Activating drive control functions with ACH480/ACH580

Drive control

￭
To enable fieldbus control of various drive functions through BACnet/IP, do the
following:
• configure the drive to accept fieldbus control of the function.
• define a fieldbus input for any drive data required for fieldbus control.
• define a fieldbus output for any control data required by the drive.
See the individual control functions described in below sections with details of
configuration.
Change only those parameter of the functions that you want to control through
BACnet/IP.
For a complete parameter list, see the relevant drives firmware manual.

Start/stop direction control

￭
For Start/stop direction control through BACnet/IP, configure the following drive
parameters and set the fieldbus controller supplied command(s) in the appropriate
location:
Drive parameter
20.01 Ext1 commands
20.06 Ext2 commands
20.21 Direction

Input reference select

￭
The tables below show how to use the fieldbus to select the drive input references
for frequency and speed control modes.
• For frequency control, set parameter 99.04 Motor control mode = Scalar (1) (default
value for ACH480/ACH580).
• For speed control, set parameter 99.04 Motor control mode = Vector (0).
Vector control has better accuracy than the scalar control, but vector control cannot
be used in all situations. For information on control modes and reference scaling, see
the drive firmware manual.
The actual output values of the drive can be read from AV0...AV6, AV31 and AV32. For
example, AV0 is output speed in rpm, AV1 is output frequency in Hz and AV31 is output
speed in %.
Value Description
Fieldbus A Start/stop by fieldbus
with Ext1 selected
Fieldbus A Start/stop by fieldbus
with Ext2 selected
Request Direction by fieldbus, if
required
Start-up 29
BACnet access point
BV10
BV10
BV11
12