Checking Encoder Rotation; System Start-Up; Memory Module - Danfoss VLT FC 280 Operating Manual

Operating Guide | VLT® Midi Drive FC 280
2. Press [▲] for positive speed reference.
3.
Check that the speed shown is positive.
4. Verify that the wiring between the drive and the motor is correct.
5.
Verify that the motor running direction matches the setting in parameter 1-06 Clockwise Direction.
a. When parameter 1-06 Clockwise Direction is set to [0] Normal (default clockwise), verify that the motor turns clockwise and
the LCP direction arrow is clockwise.
b.
When parameter 1-06 Clockwise Direction is set to [1] Inverse (counterclockwise), verify that the motor turns
counterclockwise and the LCP direction arrow is counterclockwise.

Checking Encoder Rotation

5.7
Prerequisite: Only check encoder rotation if encoder feedback is used.
1.
Select [0] Open Loop in parameter 1-00 Configuration Mode.
2. Select [1] 24 V encoder in parameter 7-00 Speed PID Feedback Source.
3.
Press [Hand On].
4. Press [▲] for positive speed reference (parameter 1-06 Clockwise Direction at [0] Normal).
5.
Check in parameter 16-57 Feedback [RPM] that the feedback is positive.
NEGATIVE FEEDBACK
If the feedback is negative, the encoder connection is wrong.
Use parameter 5-71 Term 32/33 Encoder Direction to inverse the direction, or reverse the encoder cables.
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Testing Local-control
5.8
1. Press [Hand On] to provide a local start command to the drive.
2.
Accelerate the drive by pressing [▲] to full speed. Moving the cursor left of the decimal point provides quicker input changes.
3. Note any acceleration problems.
4.
Press [Off]. Note any deceleration problems.

System Start-up

5.9
The procedure in this section requires user-wiring and application programming to be completed. The following procedure is
recommended after application setup is completed.
1. Press [Auto On].
2.
Apply an external run command.
3. Adjust the speed reference throughout the speed range.
4.
Remove the external run command.
5. Check the sound and vibration levels of the motor to ensure that the system is working as intended.
If warnings or alarms occur, see chapter Warning and Alarm Types for resetting the drive after a trip.

Memory Module

5.10
Memory Module Overview
5.10.1
The VLT® Memory Module MCM is a small memory device containing data such as:
Firmware for the drive (not including the firmware for communication on the control card).
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Commissioning
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