Danfoss FC 300 Design Manual page 38

FC 300 Design Guide
Function
1) Make sure the motor runs properly. Do the following:
Set the motor parameters using nameplate
data
Have the adjustable frequency drive do an
automatic motor adaptation.
2) Check that the motor is running in the right direction.
Press the "Hand On" LCP key. Check that the
motor is running and note in which direction
it is turning.
If the motor was turning in the wrong direction,
remove the motor plug and switch two of the
motor phases.
3) Make sure the adjustable frequency drive limits are set to safe values
Check that the ramp settings are within
capabilities of the adjustable frequency
drive and allowed application operating
specifications.
Prohibit the motor from reversing if necessary
Set acceptable limits for the motor speed and
frequency
4) Configure the reference to the process control.
Allow for an "asymmetrical" reference range by
selecting the "Min - Max" reference range.
Select the appropriate reference unit.
Set acceptable limits for the sum of all
references.
Set up Analog Input 53 as a reference resource
5) Scale the analog inputs used for reference and feedback.
Scale the Analog Input 1 (terminal 53) that
is used for the temperature reference via
potentiometer (23° - 95°F [-5° - 35°C], 0-10
VDC).
Scale the Analog Input 2 (terminal 54) that
is used for the temperature feedback via
transmitter (14°-104°F [-10° - 40°C], 4-20
mA).
6) Configure the feedback to the process control.
Set up Analog Input 54 as a feedback resource
7) Tune the process control PID parameters.
Select inverse control.
Use the tuning guidelines when relevant or
tune manually.
8) Finished!
Save the parameter settings to the LCP for
safekeeping.
38
Introduction to FC 300
Par. no.
1-2*
1-29
3-41
3-42
4-10
4-11
4-13
4-19
3-00
3-01
3-02
3-03
3-15
6-10
6-11
6-14
6-15
6-22
6-23
6-24
6-25
6-26
7-20
7-30
7-3*
0-50
MG.33.B6.22 - VLT is a registered Danfoss trademark
Setting
As specified by motor nameplate
[1] Enable complete AMA
Set a positive reference.
60 sec.
60 sec.
Depends on motor/load size!
Also active in Hand mode.
[0] Clockwise
300 RPM
1500 RPM (default)
60 Hz (default 132 Hz)
[0] Min - Max
[55]°F [[13] °C]
23°F [-5°C]
95°F [35°C]
Not necessary (default)
0 VDC
10 VDC
23°F [-5°C]
95°F [35°C]
4 mA
20 mA
14°F [-10°C]
104°F [40°C]
50 ms - 100 ms
[2] Analog input 54
[1] Inverse
See the guidelines below
[1] All to LCP