NORD Drivesystems BU0750 - Manual (Page 147)

10 Additional information
BU 0750 GB-3311 Subject to technical amendments 147
10.3.2 Process controller parameter settings
(Example: Setpoint frequency: 50 Hz, control limits: +/- 25%)
P105 (maximum frequency) [Hz] :
 
   





 
 
100%
% P415 Hz freq. Setpoint
Hz freq. Setpoint
: Example


 
% 100
% 25 50
50
Hz
Hz 62.5 Hz
P400 (Funct. analog input) : „4“ (frequency addition)
P411 (setpoint frequency) [Hz] : Setpoint frequency with 10 V at analog input 1
: Example 50 Hz
P412 (Process controller setpoint) : CR middle position / Default setting 5 V (adjust if necessary)
P413 (P controller) [%] : Factory setting 10% (adjust if necessary)
P414 (I-controller) [% / ms] : recommended 0.1
ms
%
P415 (limitation +/-) [%] : Controller limitation (see above)
Note: In the function process controller, parameter P415 is used as a
controller limiter downstream from the PI controller. This parameter
therefore has a double function.
Example 25% of setpoint
P416 (ramp before controller) [s] : Factory setting 2s (if necessary, adjust to match controller behaviour)
P420 (Funct. digital input 1) : "1" Enable right
P421 (Funct. Digital input 2) : „40“ actual value PID process controller
Alternatively, the 2nd analog input (P405=14) of the
multi I/O can be used.