Parameter descriptions
677 Amplification
678 Integral Time
The proportional and integrating part of the voltage controller can be set via parameters Amplification
677 and Integral Time 678. The control functions are deactivated by setting the parameters to 0.
The controllers are P and I controllers in the corresponding settings.
677 Amplification 0.00 30.00
678 Integral Time 0 ms 10000 ms
The factory settings depend on the selected configuration and control procedure.
1)
Configuration 30 = 110
2)
Configuration 30 = 410, 610
7.9.3 PID controller (technology controller)
The PID controller can be used for process control. The connection of PID desired set value and PID
real value of the application with the functions of the frequency inverter enables process control with-
out further components. In this way, applications such as pressure, volume flow or speed control can
be implemented easily.
Starting the PID controller: Set one of the following parameters.
Reference Frequency Source 1 475
30 - Technology Controller
Reference Frequency Source 2 492
30 - Technology Controller
Desired set value for PID controller: Set one of the following parameters.
Reference Percentage Source 1 476
Select analog input or percent-
age. For example "2 - Analog
Value MFI2A“
2
or "3 - Fixed
Percentage".
Reference Percentage Source 2 494
For example: analog desired set value at MFI2A.
(
Reference Percentage Source 1 476 or Reference Percentage Source 2 494 = "2 - Analog Value
MFI2A")
Set terminal X12.4 as analog input.
4 - Digital PNP (active: 24 V)
Voltage input or current input.
See chapter 7.6.2 "Multifunction
1
MFI1A: Multifunction input at terminal X12.3.
2
MFI2A: Multifunction input at terminal X12.4.
220
Operating Instructions
Agile
06/2013 Control functions