Reference Handling - ABB ACS355 series User Manual

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Reference handling

The control of rotation direction is configured for each control location (EXT1 and
EXT2) using the parameters in group
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.
Par. 1003
DIRECTION
= FORWARD
Fieldbus
ref. 1/2
Par. 1003
DIRECTION
= REVERSE
Fieldbus
ref. 1/2
Par. 1003
DIRECTION
= REQUEST
Fieldbus
ref. 1/2
Direction determined by
the sign of COMM
Resultant
REF1/2
Max. ref.
-100%
-163%
–[Max. ref.]
Resultant
REF1/2
Max. ref.
-163%
-100%
–[Max. ref.]
Resultant
REF1/2
Max. ref.
-163%
-100%
–[Max. ref.]
Fieldbus control with embedded fieldbus 323
10 START/STOP/DIR. Fieldbus references are
Direction determined by digital
command, eg, digital input,
Fieldbus
ref. 1/2
100%
163% -163%
163% -163%
100%
Fieldbus
ref. 1/2
Fieldbus
ref. 1/2
100%
-163%
163%
control panel
Resultant
REF1/2
Max. ref.
-100% 100%
–[Max. ref.]
Resultant
REF1/2
Max. ref.
-100% 100%
–[Max. ref.]
Resultant
REF1/2
Direction
command:
FORWARD
Max. ref.
-100% 100%
–[Max. ref.]
Direction
command:
REVERSE
163%
163%
163%