Fieldbus control with embedded fieldbus 323
Reference handling
The control of rotation direction is configured for each control location (EXT1 and
EXT2) using the parameters in group
. Fieldbus references are
bipolar, ie, they can be negative or positive. The following diagrams illustrate how
group 10 parameters and the sign of the fieldbus reference interact to produce the
reference REF1/REF2.
Direction determined by
the sign of COMM
Direction determined by digital
command, eg, digital input,
control panel
Par.
=
Par.
=
Par.
=
Fieldbus
-163%
Max. ref.
–[Max. ref.]
-100%
100%
ref. 1/2
Resultant
REF1/2
163%
Fieldbus
-163%
Max. ref.
–[Max. ref.]
-100%
100%
ref. 1/2
Resultant
REF1/2
163%
Fieldbus
-163%
Max. ref.
–[Max. ref.]
-100%
100%
ref. 1/2
Resultant
REF1/2
163%
Fieldbus
-163%
Max. ref.
–[Max. ref.]
-100%
100%
ref. 1/2
Resultant
REF1/2
163%
Fieldbus
-163%
Max. ref.
–[Max. ref.]
-100%
100%
ref. 1/2
Resultant
REF1/2
163%
Fieldbus
-163%
Max. ref.
–[Max. ref.]
-100%
100%
ref. 1/2
Resultant
REF1/2
163%
Direction
command:
Direction
command:
Summary of Contents for ACS355 series
Page 1: ...ABB machinery drives User s manual ACS355 drives ...
Page 4: ......
Page 16: ...16 ...
Page 32: ...32 Operation principle and hardware description ...
Page 58: ...58 Electrical installation ...
Page 74: ...74 Start up control with I O and ID run ...
Page 106: ...106 Control panels ...
Page 120: ...120 Application macros ...
Page 178: ...178 Program features ...
Page 338: ...338 Fieldbus control with embedded fieldbus ...
Page 368: ...368 Fault tracing ...
Page 404: ...404 Dimension drawings ...
Page 410: ...410 Appendix Resistor braking ...
Page 434: ...434 Appendix Permanent magnet synchronous motors PMSMs ...