Danfoss VLT HVAC Drive FC 100 Series Design Manual page 34

2. Introduction to VLT HVAC Drive
2.8.4. Programming Order
Function
1) Make sure the motor runs properly. Do the following:
Set the frequency converter to control the motor
2
based on frequency converter output frequency.
Set the motor parameters using nameplate data.
Run Automatic Motor Adaptation.
2) Check that the motor is running in the right direction.
Pressing [Hand On] starts the motor at 5Hz in forward
direction and the display shows: "Motor is running.
Check if motor rotation direction is correct.
3) Make sure the frequency converter limits are set to safe values
Check that the ramp settings are within capabilities
of the frequency converter and allowed application
operating specifications.
Prohibit the motor from reversing (if necessary)
Set acceptable limits for the motor speed.
Switch from open loop to closed loop.
4) Configure the feedback to the PID controller.
Set up Analog Input 54 as a feedback input.
Select the appropriate reference/feedback unit.
5) Configure the setpoint reference for the PID controller.
Set acceptable limits for the setpoint reference.
Set up Analog Input 53 as Reference 1 Source.
6) Scale the analog inputs used for setpoint reference and feedback.
Scale Analog Input 53 for the temperature range of
the potentiometer (-5 to +35°C, 0-10 V).
Scale Analog Input 54 for the temperature range of
the temperature sensor (-10 to +40°C, 4-20 mA)
7) Tune the PID controller parameters.
Select inverse control because motor's speed should
increase when the feedback is greater than the set-
point reference.
Adjust the frequency converter's Closed Loop Con-
troller, if needed.
8) Finished!
Save the parameter setting to the LCP for safe keep-
ing
34
Par. no. Setting
Hz
0-02 [1]
1-2* As specified by motor name plate
1-29 Enable complete AMA
function.
If motor rotation direction is incorrect, two motor
phase cables should be interchanged.
3-41 60 sec.
3-42 60 sec.
Depends on motor/load size!
Also active in Hand mode.
4-10 Clockwise
4-12 10 Hz
4-14 50 Hz
4-19 50 Hz
Closed Loop
1-00
Analog input 54
20-00
°C
20-12 [60]
3-02 -5 °C
3-03 35 °C
Analog input 53
3-15
6-10 0 V
6-11 10 V (default)
6-14 -5 °C
6-15 35 °C
6-22 4 mA
6-23 20 mA (default)
6-24 -10 °C
6-25 40 °C
Inverse
20-81
20-93 See Optimization of the PID Controller, below.
20-94
All to LCP
0-50
MG.11.B7.02 - VLT ® is a registered Danfoss trademark
®
VLT HVAC Drive Design Guide
[1] and then run the AMA
[0]
[3]
[2] (default)
[1] (default)
[1]
[1]