ABB ACS550 User Manual page 236

236
Reference
As described earlier in section
a speed or frequency reference.
Reference scaling
The following table describes
Reference
REF1
REF2
Note: The setting of parameter 1104
the scaling of references.
When parameter 1103
COMM
Reference
REF1
Fieldbus adapter
Reference
Range
type
-32767... Speed or
+32767 frequency
-32767... Speed or
+32767 frequency
Torque
PID
Reference
1
REF
1, the reference is scaled as follows:
* AI
Value setting
+ 1
COMM AI COMM
Control interface on page 222, the
scaling for the ABB Drives profile.
REFERENCE
ABB Drives Profile (FBA)
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 SELECT
ABB Drives profile (FBA)
AI reference scaling
(%) + ( (%) - 0.5 ·
AI REF
(100 + 0.5 · (Par. 1105)%
100%
(100 - 0.5 · (par. 1105))%
ACS550 User's Manual
REFERENCE
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 +
COMM
1 (%))
MAX
Fieldbus reference
correction coefficient
AI1 input signal
0% 50% 100%
word is
1 or
AI