Danfoss FC 300 Design Manual page 32

3 Introduction to AutomationDrive FC 300
In the parameter list below it is assumed that all other parameters and switches remain at their default setting.
The following must be programmed in order shown - see explanation of settings in the Programming Guide.
Function
1) Make sure the motor runs properly. Do the following:
Set the motor parameters using name plate data
Have the frequency converter makes an Automatic Motor
Adaptation
2) Check the motor is running and the encoder is attached properly. Do the following:
3
Press the "Hand On" LCP key. Check that the motor is running
and note in which direction it is turning (henceforth referred
to as the "positive direction").
Motor Angle
Go to par. 16-20
positive direction. It must be turned so slowly (only a few
RPM) that it can be determined if the value in
par. 16-20 Motor Angle
Motor Angle
If par. 16-20
coder direction in par. 5-71
3) Make sure the drive limits are set to safe values
Set acceptable limits for the references.
Check that the ramp settings are within drive capabilities and
allowed application operating specifications.
Set acceptable limits for the motor speed and frequency.
4) Configure the Speed Control and select the Motor Control principle
Activation of Speed Control
Selection of Motor Control Principle
5) Configure and scale the reference to the Speed Control
Set up Analog Input 53 as a reference Source
Scale Analog Input 53 0 RPM (0 V) to 1500 RPM (10V)
6) Configure the 24V HTL encoder signal as feedback for the Motor Control and the Speed Control
Set up digital input 32 and 33 as encoder inputs
Choose terminal 32/33 as motor feedback
Choose terminal 32/33 as Speed PID feedback
7) Tune the Speed Control PID parameters
Use the tuning guidelines when relevant or tune manually
8) Finished!
Save the parameter setting to the LCP for safe keeping
3.4.2 Tuning PID Speed Control
The following tuning guidelines are relevant when using one of the Flux motor control principles in applications where the load is mainly inertial (with a
low amount of friction).
Speed PID Proportional Gain
The value of par. 7-02
calculated using the following formula:
Total inertia k gm
Par . 7 − 02 =
32
. Turn the motor slowly in the
is increasing or decreasing.
is decreasing then change the en-
Term 32/33 Encoder Direction
.
is dependent on the combined inertia of the motor and load, and the selected bandwidth can be
2
x par . 1 − 25
x Bandwidth rad
Par x
. 1 − 20 9550
MG.33.BC.02 - VLT
Par. no. Setting
1-2* As specified by motor name plate
Automatic
par. 1-29 [1] Enable complete AMA
Motor Adaptation
(AMA)
Set a positive reference.
Motor An-
par. 16-20 N.A. (read-only parameter) Note: An increasing value overflows
gle at 65535 and starts again at 0.
Term
par. 5-71 [1] Counter clockwise (if par. 16-20
32/33 Encoder Di-
rection
Minimum
par. 3-02 0 RPM (default)
Reference
1500 RPM (default)
par. 3-03 Maximum
Reference
Ramp 1
par. 3-41 default setting
Ramp up Time default setting
Ramp 1
par. 3-42
Ramp Down Time
Motor
par. 4-11 0 RPM (default)
Speed Low Limit 1500 RPM (default)
[RPM]
60 Hz (default 132 Hz)
Motor
par. 4-13
Speed High Limit
[RPM]
par. 4-19 Max Out-
put Frequency
par. 1-00 Configura- [1] Speed closed loop
tion Mode
Motor Con-
par. 1-01 [3] Flux w motor feedb
trol Principle
Reference
par. 3-15 Not necessary (default)
Resource 1
6-1* Not necessary (default)
Terminal
par. 5-14 [0] No operation (default)
32 Digital Input
Terminal
par. 5-15
33 Digital Input
Flux Motor
par. 1-02 Not necessary (default)
Feedback Source
par. 7-00 Speed PID Not necessary (default)
Feedback Source
7-0* See the guidelines below
par. 0-50 LCP Copy [1] All to LCP
/ s
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FC 300 Design Guide
Motor Angle
is decreasing)