Danfoss VLT Midi Drive FC 280 Design Manual page 35

Product Overview
Function
If the motor turns opposite of required direction:
1. Change motor direction in
parameter 4-10 Motor Speed Direction.
2. Turn off mains, and wait for DC link to
discharge.
3. Switch 2 of the motor phases.
Set configuration mode.
3) Set reference configuration, that is the range for reference handling. Set scaling of analog input in parameter group 6-** Analog In/Out.
Set reference/feedback units.
Set minimum reference (10 °C (50 °F)).
Set maximum reference (80 °C (176 °F)).
If the set value is determined from a preset value
(array parameter), set other reference sources to [0]
No Function.
4) Adjust limits for the frequency converter:
Set ramp times to an appropriate value as 20 s.
Set minimum speed limits.
Set motor speed maximum limit.
Set maximum output frequency.
Set parameter 6-19 Terminal 53 mode and parameter 6-29 Terminal 54 mode to voltage or current mode.
5) Scale analog inputs used for reference and feedback:
MG07B102
Design Guide
Parameter Setting
number
Parameter 4-10 Select correct motor shaft direction.
Motor Speed
Direction
Parameter 1-00 [3] Process.
Configuration
Mode
° C Unit shown on display.
Parameter 3-01 [60]
-5 °C (23 °F).
Reference/
35 °C (95 °F).
Feedback Unit
Parameter 3-02 [0] 35%.
Minimum
Par . 3 − 10
Ref =
100
Reference
Parameter 3-14 Preset Relative Reference to parameter 3-18 Relative
Parameter 3-03
Scaling Reference Resource [0] = No Function.
Maximum
Reference
Parameter 3-10
Preset
Reference
Parameter 3-41 20 s
Ramp 1 Ramp 20 s
Up Time
Parameter 3-42
Ramp 1 Ramp
Down Time
Parameter 4-12 10 Hz
Motor Speed 50 Hz
Low Limit [Hz] 60 Hz
Parameter 4-14
Motor Speed
High Limit [Hz]
Parameter 4-19
Max Output
Frequency
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0
× Par . 3 − 03 − par . 3 − 02 = 24, 5° C
2 2
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