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It’s possible to enable separately all references using connections or logic input functions.
For speed and torque references the active reference is the sum of all enabled references, for torque
limit prevails the more constrain active reference, between the sum of analog and the Fieldbus
references
There can be up to 3 differential analog inputs (A.I.1
÷ A.I.3) ± 10V which, after being digitally
converted with a resolution of 14 bits, can be:
o conditioned by digital offset and a multiplicative coefficient
o enabled independently through configurable logic inputs or connections
o configured as meaning through the corresponding connection (P203 ÷ P205)
o added together for the references with the same configuration
For example in the case of A.I.1, the result of the conditioning is given by the following equation:
REF1= ((A.I.1/10)*P1) + P2
By selecting a suitable correction factor and offset the most varied linear relationships can be
obtained between the input signal and the reference generated, as exemplified below.
+10V
-100%
-10V
100%
REF
-5V
100%
REF
+5V
Vin
Vin
P1=100.0
P2=0
P1=200.0
P2=0
P1=200.0
P2=-100.0
Vin
+10V
+100%
-100%
0
REF1
Default setting
+10V
Vin
0
20%
100%
P1=80.0
P2=20.0
REF1
+10V
100%
20%
P1=-80.0
P2=100.0
REF1
Vin
Note: for the offset parameters (P02, P04 and P06) an integer representation has been used on the
basis of 16383, in order to obtain maximum possible resolution for their settings.
For example if P02=100 offset = 100/16383 = 0.61%
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