References - ABB ACQ580 Firmware Manual

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References

References are 16-bit words containing a sign bit and a 15-bit integer. A negative
reference (indicating reversed direction of rotation) is formed by calculating the two's
complement from the corresponding positive reference.
ABB drives can receive control information from multiple sources including analog
and digital inputs, the drive control panel and a fieldbus adapter module. In order to
have the drive controlled through the fieldbus, the module must be defined as the
source for control information such as reference. This is done using the source
selection parameters in groups
reference chain.
Debugging the network words
If parameter 50.12 FBA A debug mode
the fieldbus are displayed by
Scaling of references
The references are scaled as defined by parameters 46.01...46.04; which scaling is
in use depends on the setting of
Fieldbus
The scaled references are shown by parameters
FB A reference 2.
Fieldbus control through a fieldbus adapter 395
22 Speed reference selection
is set to Fast, the references received from
50.14 FBA A reference 1
50.04 FBA A ref1 type
46.01 (with speed reference)
20000
46.02 (with frequency reference)
10000
0 0
-10000
-(46.01) (with speed reference)
-20000
-(46.02) (with frequency reference)
and 28 Frequency
and 50.15 FBA A reference
and 50.05 FBA A ref2
Drive
03.05 FB A reference 1
2.
type.
and 03.06