ABB ACS380 Series - Page 287

Parameters 287
71.14 Set 1 setpoint scaling Defines, together with parameter 71.15 Set 1 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
-32768.00… 32767.00 Process setpoint base. 1 = 1
71.15 Set 1 output scaling See parameter 71.14 Set 1 setpoint scaling. 1500.00
-32768.00… 32767.00 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. 32767.00
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 40.35 Set 1 output min. -32768.0
71.37 Output max See parameter 40.37 Set 1 output max. 32767.0
71.38 Output freeze enable See parameter 40.38 Set 1 output freeze enable. Not selected
71.39 Deadband range The control program compares the absolute value of
parameter 71.04 Deviation act value to the deadband
range defined by this parameter. If the absolute value is
within the deadband range for the time period defined by
parameter 71.40 Deadband delay, PID's deadband mode
is activated and 71.06 PID status word bit 9 Deadband
active is set. Then PID's output is frozen and 71.06 PID
status word bit 2 Output frozen is set.
If the absolute value is equal or greater than the
deadband range, PID's deadband mode is deactivated.
0.0
No. Name/Value Description Default
FbEq 16