ABB ACH550-UH User Manual page 262

1-258
Reference handling
Use group 10 parameters to configure for control of rotation direction for each control
location (
and the sign of the fieldbus reference interact to produce
and
REF
negative.
Parameter
1003
1003
1003
Embedded fieldbus
1 and 2). The following diagrams illustrate how group 10 parameters
EXT EXT
2). Note, fieldbus references are bipolar, that is they can be positive or
Value Setting
1 ( )
DIRECTION FORWARD
2 ( )
DIRECTION REVERSE
3 ( )
DIRECTION REQUEST
ABB Drives Profile
AI Reference Scaling
Max. Ref
Fieldbus
Reference
-163% -100%
-(Max. Ref.)
Max. Ref
Fieldbus
-163% -100%
Reference
-(Max. Ref.)
Max. Ref
-163% -100%
Fieldbus
Reference
-(Max. Ref.)
ACH550-UH User's Manual
values (
REFERENCE REF
Resultant Ref.
163%
100%
Resultant Ref.
163%
100%
Resultant Ref.
163%
100%
1