Danfoss VLT 380-500 V Design Manual page 147

PID Controls
Function
Check that the ramp settings are within unit capabilities
and allowed application operating specifications.
Set acceptable limits for the motor speed and frequency. Parameter 4-11 Motor Speed
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 from 0 RPM (0 V) to 1500 RPM (10
V).
6) Configure the 24 V HTL encoder signal as feedback for the motor control and the speed control.
Set up digital inputs 32 and 33 as encoder inputs.
Select terminal 32/33 as motor feedback.
Select 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.
Table 16.3 Programming Order
MG37N102
Design Guide
Parameter number
Parameter 3-41 Ramp 1
Ramp Up Time
Parameter 3-42 Ramp 1
Ramp Down Time
Low Limit [RPM]
Parameter 4-13 Motor Speed
High Limit [RPM]
Parameter 4-19 Max Output
Frequency
Parameter 1-00 Configu-
ration Mode
Parameter 1-01 Motor
Control Principle
Parameter 3-15 Reference
Resource 1
6-1* Analog Input 1
Parameter 5-14 Terminal 32
Digital Input
Parameter 5-15 Terminal 33
Digital Input
Parameter 1-02 Flux Motor
Feedback Source
Parameter 7-00 Speed PID
Feedback Source
7-0* Speed PID Ctrl
Parameter 0-50 LCP Copy
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Setting
Default setting
0 RPM (default)
1500 RPM (default)
60 Hz (default 132 Hz)
[1] Speed closed loop
[3] Flux w motor feedb
Not necessary (default)
Not necessary (default)
[0] No operation (default)
Not necessary (default)
Not necessary (default)
See chapter 16.1.4 Tuning Speed PID Control
[1] All to LCP
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