ABB ACH550-UH User Manual page 260

1-256
Reference scaling
ABB drives and DCU profiles
The following table describes
Reference
REF1
REF2
Note: The setting of parameter 1104
the scaling of references.
When parameter 1103
COMM
Reference
REF1
Embedded fieldbus
Reference
Range
Type
-32767 Speed or
... frequency
+32767
-32767 Speed or
... frequency
+32767
Torque
PID
Reference
1
REF
* 1, the reference is scaled as follows:
AI
Value
Setting
+ 1
COMM AI COMM
scaling for the ABB Drives profile.
REFERENCE
ABB Drives and DCU Profiles
Scaling
-20000 = -(par. 1105)
0 = 0
+20000 = (par. 1105)
(20000 corresponds to 100%)
-10000 = -(par. 1108)
0 = 0
+10000 = (par. 1108)
(10000 corresponds to 100%)
-10000 = -(par. 1108)
0 = 0
+10000 = (par. 1108)
(10000 corresponds to 100%)
-10000 = -(par. 1108)
0 = 0
+10000 = (par. 1108)
(10000 corresponds to 100%)
1 and 1107
REF MIN
or 1106 2
SELECT REF
ABB Drives and DCU Profiles
AI Reference Scaling
(%) +( (%) - 0.5* 1
AI REF MAX
(100 + 0.5 * (Par. 1105)%
100%
(100 - 0.5 * (par. 1105))%
0%
ACH550-UH User's Manual
Remarks
Final reference limited by
1104/1105. Actual motor
speed limited by 2001/2002
(speed) or 2007/2008
(frequency).
Final reference limited by
1107/1108. Actual motor
speed limited by 2001/2002
(speed) or 2007/2008
(frequency).
Final reference limited by
2015/2017 (torque1) or 2016/
2018 (torque2).
Final reference limited by
4012/4013 (PID set1) or
4112/4113 (PID set2).
2 has no effect on
REF MIN
is set to
SELECT COMM
(%))
Fieldbus Reference
Correction Coefficient
AI1 Input Signal
50% 100%
+ 1 or
AI