Operating Instructions

Parameter
Parameter Description Setting
p2350 Enable PID autotuning Automatic controller setting based on the "Ziegler Nichols" method.
After completion of the autotuning, the inverter sets p2350 = 0.
0: No function
1: The process variable follows the setpoint after a sudden setpoint
change (step function) relatively quickly, however with an overshoot.
W
2: Faster controller setting than for p2350 = 1 with larger overshoot of the
controlled variable.
W
3: Slower controller setting than for p2350 = 1. Overshoot of the controlled
variable is, to a large extent, avoided.
W
4: Controller setting after completion of the autotuning as for p2350 = 1.
Optimize only the P and I action of the PID controller.
W
Factory setting: 0
p2354 PID autotuning monitoring
time
Monitoring time for the process response
p2354 must be greater than half the period of the process variable oscil‐
lation.
Factory setting: 240 s
p2355 PID autotuning offset Offset for autotuning
p2355 must be sufficiently large so that the amplitude of the process var‐
iable oscillation signal can be differentiated from any superimposed noise.
Factory setting: 5 %
Advanced commissioning
6.17 PID technology controller
Converter with the CU230P-2 Control Units
286 Operating Instructions, 04/2018, FW V4.7 SP10, A5E34257946B AF