Input Reference Select; Frequency Reference - ABB FBIP-21 BACnet/IP User Manual

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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 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 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 %.

Frequency reference

For using the fieldbus to provide input frequency references to the
drive, configure the following drive parameters and set the fieldbus
controller supplied reference word(s) in the appropriate location:
Drive
parameter
19.11 Ext1/Ext2
selection
28.11 Ext1
frequency ref1
28.15 Ext2
frequency ref1
46.02
Frequency
scaling
50.04 FBA A
ref1 type/50.05
FBA A ref2 type
1)
As example
Value Description
2 = FBA A Reference set
MCW bit selection by fieldbus
3 = FBA ref1 Frequency reference
1)
source 1
5 = FBA ref2 Frequency reference
1)
) source 2
1)
50.00 Hz 16-bit scaling of
frequency-related
parameters
0 = Speed or References (1 or 2)
frequency type for scaling defined
5 = Frequency in parameter 46.02
Frequency scaling
Start-up 37
BACnet
access point
BV13
AV16
AV17
AV16/AV17
AV16/AV17