Goodrive300 Series VFD    Basic operation instruction 
177 
Detailed instruction of parameters 
Simple PLC 0–7 step 
ACC/DEC time   
Simple PLC 8–15 step 
ACC/DEC time 
Digital input function 
selection 
16: Multi-step speed terminal 1 
17: Multi-step speed terminal 2 
18: Multi-step speed terminal 3 
19: Multi-step speed terminal 4 
20: Multi-step speed pause 
Simple PLC and the current 
step of the multi-step speed 
7.15 PID control 
PID control is commonly used to control the procedure through the controlled procedure. Adjust the 
output  frequency  by  proportional,  integral,  differential  operation  with  the  dispersion  of  the  target 
signals to stabilize the value on the target. It is possible to apply to the flow, pressure and temperature 
control. Figure of basic control is as below: