ABB ACS550-01 - Page 194

194 ACS550 User’s Manual
Fieldbus Adapter
Reference
As described earlier in "Control Interface", the REFERENCE word is a speed or
frequency reference.
Reference Scaling
The following table describes REFERENCE scaling for the ABB Drives profile.
Note! The setting of parameter 1104 REF1 MIN and 1107 REF2 MIN has no effect on
the scaling of references.
When parameter 1103 REF1 SELECT or 1106 REF2 SELECT is set to COMM+AI1 or
COMM*AI1, the reference is scaled as follows:
ABB Drives Profile (FBA)
Reference Range
Reference
Type
Scaling Remarks
REF1 -32767…
+32767
Speed or
frequency
-20000 = -(par. 1105)
0 = 0
+20000 = (par. 1105)
(20000 corresponds to 100%)
Final reference limited by
1104/1105. Actual motor
speed limited by 2001/2002
(speed) or 2007/2008
(frequency).
REF2 -32767…
+32767
Speed or
frequency
-10000 = -(par. 1108)
0 = 0
+10000 = (par. 1108)
(10000 corresponds to 100%)
Final reference limited by
1107/1108. Actual motor
speed limited by 2001/2002
(speed) or 2007/2008
(frequency).
Torque -10000 = -(par. 1108)
0 = 0
+10000 = (par. 1108)
(10000 corresponds to 100%)
Final reference limited by
2015/2017 (torque1) or
2016/2018 (torque2).
PID
Reference
-10000 = -(par. 1108)
0 = 0
+10000 = (par. 1108)
(10000 corresponds to 100%)
Final reference limited by
4012/4013 (PID set1) or
4112/4113 (PID set2).
ABB Drives Profile (FBA)
Reference Value Setting AI Reference Scaling
REF1
COMM+AI1 COMM (%) +(AI (%) - 0.5*REF1 MAX (%))
0% 50%
(100 + 0.5 * (Par. 1105)%
(100 - 0.5 * (par. 1105))%
100%
100%
AI1 Input Signal
Fieldbus Reference
Correction Coefficient