Process Pid Control Programming Order - Danfoss VLT AutomationDrive FC 300 Design Manual

Product Introduction

3.4.9 Process PID Control Programming Order

Function
Initialise the frequency converter.
1) Set motor parameters:
3 3
Set the motor parameters according to the name
plate data.
Perform a full Automation Motor Adaptation.
2) Check that motor is running in the right direction.
When the motor is connected to frequency converter with straight forward phase order as U - U; V- V; W - W, the motor shaft usually
turns clockwise as viewed from the shaft end.
Press the "Hand On" LCP key. Check the shaft direction by applying a manual reference.
If the motor turns opposite of the required
direction:
1. Change motor direction in 4-10 Motor Speed
Direction
2. Turn off mains - wait for DC link to discharge -
switch two of the motor phases
Set configuration mode.
Set Local Mode Configuration.
3) Set reference configuration, i.e. the range for reference handling. Set scaling of analog input in parameter 6-**
Set reference/feedback units:
Set min. reference (10 °C):
Set max. reference (80 °C):
If set value is determined from a preset value
(array parameter), set other reference sources to
No Function.
4) Adjust limits for the frequency converter:
Set ramp times to an appropriate value as 20 s.
Set min. speed limits:
Set motor speed max. limit:
Set max. output frequency:
Set S201 or S202 to desired analog input function (Voltage (V) or milli-Amps (I)):
WARNING
Switches are sensitive - Make a power cycling keeping default setting of V.
5) Scale analog inputs used for reference and feedback
Set terminal 53 low voltage:
Set terminal 53 high voltage:
Set terminal 54 low feedback value:
Set terminal 54 high feedback value:
Set feedback source:
6) Basic PID settings.
Process PID normal/inverse.
Process PID anti wind-up.
Process PID start speed.
Save parameters to LCP.
Table 3.11 Example of Process PID Control Set-up
40
®
VLT AutomationDrive FC 300 Design Guide 90-1200 kW
Par. no. Setting
14-22 [2] Initialization - make a power cycling - press [Reset]
1-2* As stated on motor name plate
1-29 [1] Enable complete AMA
4-10 Select correct motor shaft direction
1-00 [3] Process
1-05 [0] Speed Open Loop
[60] °C Unit shown on display
3-01
-5 °C
3-02
3-03 35 °C
3-10
[0] 35%
Par . 3 − 10 (0)
Ref =
100
3-14 Preset Relative Reference to 3-18 Relative Scaling Reference Resource
[0]=No Function
3-41 20 s
3-42 20 s
4-11 300 RPM
4-13 1500 RPM
4-19 60 Hz
6-10 0 V
6-11 10 V
-5 °C
6-24
6-25 35 °C
7-20
[2] analog input 54
7-30 [0] Normal
7-31 [1] On
7-32 300 rpm
0-50 [1] All to LCP
MG34S202 - Rev. 2013-08-19
× (( Par . 3 − 03) − ( par . 3 − 02)) = 24, 5° C