ABB ACS560 - Page 343

Parameters 343
71.14 Setpoint scaling Defines, together with parameter 71.15 Output scaling, a
general scaling factor for the external PID control chain. The
scaling can be utilized when, for example, the process
setpoint is input in Hz, and the output of the PID controller is
used as an rpm value in speed control. In this case, this
parameter might be set to 50, and parameter 71.15 to the
nominal motor speed at 50 Hz.
In effect, the output of the PID controller [71.15] when
deviation (setpoint - feedback) = [71.14] and [71.32] = 1.
Note: The scaling is based on the ratio between 71.14 and
71.15. For example, the values 50 and 1500 would produce
the same scaling as 1 and 3.
1500.00
-200000.00…
200000.00
Process setpoint base. 1 = 1
71.15 Output scaling See parameter 71.14 Setpoint scaling. 1500.00
-200000.00…
200000.00
Process PID controller output base. 1 = 1
71.16 Setpoint 1 source See parameter 40.16 Set 1 setpoint 1 source. AI1 percent
71.19 Internal setpoint
sel1
See parameter 40.19 Set 1 internal setpoint sel1. Not selected
71.20 Internal setpoint
sel2
See parameter 40.20 Set 1 internal setpoint sel2. Not selected
71.21 Internal setpoint 1 See parameter 40.21 Set 1 internal setpoint 1. 0.00 PID
customer
units
71.22 Internal setpoint 2 See parameter 40.22 Set 1 internal setpoint 2. 0.00 PID
customer
units
71.23 Internal setpoint 3 See parameter 40.23 Set 1 internal setpoint 3. 0.00 PID
customer
units
71.26 Setpoint min See parameter 40.26 Set 1 setpoint min.0.00
71.27 Setpoint max See parameter 40.27 Set 1 setpoint max. 200000.00
71.31 Deviation inversion See parameter
40.31 Set 1 deviation inversion. Not inverted
(Ref - Fbk)
71.32 Gain See parameter 40.32 Set 1 gain.1.00
71.33 Integration time See parameter 40.33 Set 1 integration time. 60.0 s
71.34 Derivation time See parameter 40.34 Set 1 derivation time. 0.000 s
71.35 Derivation filter time See parameter 40.35 Set 1 derivation filter time. 0.0 s
71.36 Output min See parameter 40.36 Set 1 output min. -200000.00
71.37 Output max See parameter 40.37 Set 1 output max. 200000.00
71.38 Output freeze
enable
See parameter 40.38 Set 1 output freeze. Not selected
No. Name/Value Description Def/FbEq16