ABB DriveIT ACH550-UH - Reference Handling

ACH550-UH User’s Manual 169
Serial Communication – EFB
Reference Handling
Use group 10 parameters to configure for control of rotation direction for each control
location (
EXT1 and EXT2). The following diagrams illustrate how group 10 parameters
and the sign of the fieldbus reference interact to produce
REFERENCE values (REF1
REF1 COMM*AI1 COMM (%) * (AI (%) / 0.5*REF1 MAX (%))
REF2 COMM+AI1 COMM (%) + (AI (%) - 0.5*REF2 MAX (%))
REF2 COMM*AI1 COMM (%) * (AI (%) / 0.5*REF2 MAX (%))
ABB Drives Profile
Reference
Value
Setting
AI Reference Scaling
0%
50%
200%
(100 - 0.5 * (par. 1105))%
100%
100%
AI1 Input Signal
Fieldbus Reference
Correction Coefficient
0%
50%
(100 + 0.5 * (Par. 1108)%
(100 - 0.5 * (par. 1108)%
100%
100%
AI1 Input Signal
Fieldbus Reference
Correction Coefficient
0%
50%
200%
0%
100%
100%
AI1 Input Signal
Fieldbus Reference
Correction Coefficient