Danfoss VLT Midi Drive FC-280P4K0 [31/92] Product overview design guide

Set acceptable limits for the motor speed and frequency. Parameter 4-12 Motor

Speed Low Limit [Hz]

0 Hz

Parameter 4-14 Motor

Speed High Limit [Hz]

50 Hz

Parameter 4-19 Max

Output Frequency

60 Hz

4) Congure the speed control and select the motor control principle:

Activation of speed control Parameter 1-00 Congu-

ration Mode

[1] Speed closed loop

Selection of motor control principle Parameter 1-01 Motor

Control Principle

[1] VVC

5) Congure and scale the reference to the speed control:

Set up analog input 53 as a reference source. Parameter 3-15 Reference 1

Source

Not necessary (default)

Scale analog input 53 0 Hz (0 V) to 50 Hz (10 V) 6-1* Analog Input 1 Not necessary (default)

6) Congure the 24 V HTL encoder signal as feedback for the motor control and the speed control:

Set up digital input 32 and 33 as encoder inputs. Parameter 5-14 Terminal

32 Digital Input

[82] Encoder input B

Parameter 5-15 Terminal

33 Digital Input

[83] Encoder input A

Select terminal 32/33 as speed PID feedback. Parameter 7-00 Speed PID

Feedback Source

[1] 24 V Encoder

7) Tune the speed control PID parameters:

Use the tuning guidelines when relevant or tune manually. 7-0* Speed PID Ctrl.

8) Finish:

Save the parameter setting to the LCP for safe keeping. Parameter 0-50 LCP Copy [1] All to LCP

Table 2.7 Programming Order for Speed PID Control

Product Overview Design Guide

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