Vacon Vacon 100 Error Code 17

Vacon PLC & VFD Minor Motor

Model: Vacon 100 | Code: 17

Applicable Systems
Vacon 100

Symptoms

Motor underload. The motor load has dropped below the minimum threshold. This may indicate a broken coupling,dry pump, or empty pipe.

Possible Causes

  • Pump running dry: no liquid in the system
  • Broken coupling between motor and driven equipment
  • Conveyor belt broken or empty
  • Underload threshold parameter set too high
  • Process upset causing loss of load (e.g., valve closed, filter blocked)

Troubleshooting Steps

  1. Step 1: Check the equipment status and fault indicators to confirm the active fault code
    Fault indicator or HMI displays code 17 as active
  2. Step 2: Verify all electrical connections, wiring harnesses, and connector seating
    All connections secure, no corrosion, loose pins, or damaged wires
  3. Step 3: Check motor cable connections at drive output terminals for correct phase sequence and tightness
    Cables securely connected, phase sequence correct, no loose terminals
  4. Step 4: Measure motor winding insulation resistance with a megger (500V DC minimum)
    Insulation resistance above minimum value (typically > 1 Megaohm)
  5. Step 5: Verify drive parameter settings match motor nameplate data (current, voltage, power, RPM)
    All motor nameplate parameters correctly entered in drive
  6. Step 6: Inspect motor for mechanical overload, bearing seizure, or driven equipment jam
    Motor rotates freely, no mechanical binding or excessive load
  7. Step 7: Reset the fault after fixing the root cause: clear the fault via HMI or power-cycle
    Fault clears and drive resumes normal operation without recurrence

How to Reset

To reset: 1) Identify and fix the root cause described in the fault symptoms. 2) Press RESET on the HMI or controller, or power-cycle the equipment. 3) If the fault recurs, contact manufacturer service. Caution: Document the fault code and context before resetting.

Frequently Asked Questions

  • Q: What does fault code 17 mean on the Vacon Vacon 100?

    Fault 17 on the Vacon Vacon 100 indicates: Motor underload. The motor load has dropped below the minimum threshold. This may indicate a broken coupling, dry pump, or empty pipe. Refer to the equipment manual and manufacturer support for specific troubleshooting steps.

  • Q: Can I continue operating the equipment with fault 17 active?

    No. The equipment has detected a fault condition and has taken protective action (typically stopping or derating). Continuing to operate without fixing the root cause may cause further damage. Always investigate and fix the fault before resuming operation.

Related Vacon Fault Codes

Source: Vacon 100/100X Drive User Manual, Danfoss/Vacon Documentation

Category: PLC & VFD