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Danfoss Drive Troubleshooting Guide

Follow step-by-step instructions to troubleshoot your VLT 5000, VLT 2800, VLT 6000, or VLT 8000 drive issues. Resolve common problems such as control terminal configurations, reference settings, and operational modes. If needed, contact Danfoss Drives for assistance.

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Danfoss Drive Troubleshooting Guide

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  1. VLT Diagnostics Click on the button above your Keypad

  2. VLT 5000/2800Must use LCP-2 keypad with VLT 2800 The Drive is NOT running! Press the Display/Status key Read the bottom line Click on button for your Display • LCP STOP • UNIT READY • STANDBY • RUN OK • RUN JOG • LOCAL My problem is not shown Start Over

  3. LCP STOP • Main Display 0.0Hz is FLASHING • Press the START key on the keypad. • Still doesn’t Run? – go back to VLT 5000 page.

  4. UNIT READY • Remove cover just under keypad – These are Control Terminals • If wire attached to terminal 27, Close the switch between terminal 27 (Digital Input) and terminal 12 or 13 (+24Vdc). • If no wires is attached to terminal 27 – place a jumper between terminal 27 and 12 or between 27 and 13 • Go back to VLT 5000 page -

  5. STANDBY • Standby means there is no “START” command. • Remove cover just under keypad – These are Control Terminals • Close the switch attached to terminal 18. • Go back to VLT 5000 page -

  6. RUN OK • Display Status says RUN OK but output frequency stays at zero Most likely Reference is at zero. • Press the + key until “Reference” appears. If it is zero find reference and change it to a number above 0. • No GO! Go to Phone Call • Go Back to the first page -

  7. RUN JOG • Remove cover just under keypad – These are Control Terminals • Open the switch attached to terminal 29. • No GO. Go to Phone Call • Go back to the VLT 5000 page -

  8. LOCAL/ REM • Drive ignores all external commands • Press “Quick Menu” key then the “+” key – until 12 of 13 apear on top line, parameter 002 appears near bottom. Press “Change Data” key, then “+” key until bottom line says “REMOTE” • No GO. Go to Phone Call. • Go back to VLT 5000 page

  9. VLT 6000/8000 Diagnostics The Drive is NOT running!!! Press the “Display Mode” key Read the bottom line Click on button for your Display • OFF LOCAL STOP • UN. READY • STANDBY • RUNNING • JOG My problem is not shown Start Over

  10. HAND LOCAL • Drive ignores all commands • “Hand Local” means Keypad is in control • Press “Auto Start” key – “Auto Rem.” appears. • No GO. Go to Phone Call • Go back to VLT 6000 page

  11. OFF LOCAL STOP • OFF/STOP key on keypad overrides all commands both Hand and Auto. • Main Display (0.0Hz) starts to Flash • To remove - press Auto/Start key • No GO. Go to Phone Call. • Go back to VLT 6000 page

  12. RUNNING • “Running” has both Start command but no reference • If you can not find the reference, go to • Phone Call • Go back to VLT 6000 page

  13. UN. READY • Remove cover just under keypad – These are Control Terminals • If wire attached to terminal 27, Close the switch between terminal 27 (Digital Input) and terminal 12 or 13 (+24Vdc). • If no wires is attached to terminal 27 – place a jumper between terminal 27 and 12 or between 27 and 13 • Go back to VLT 6000 page

  14. STANDBY • Standby means there is no “START” command. • Remove cover just under keypad – These are Control Terminals • Close the switch attached to terminal 18. • Go back to VLT 6000 page

  15. JOG • Remove cover just under keypad – These are Control Terminals • Open the switch attached to terminal 29. • No GO. Go to Phone Call • Go back to VLT 6000 page

  16. Catalog Number Phone Call Needed Phone 210-9411744 (Danfoss Drives GRSC) ask for Service Technician Find label on drive – be ready to give Catalog Number Sales Number and Serial Number. Serial Number Sales Number Start Over

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