Practice Tasks

Hands-on exercises for VFD commissioning, PLC programming, and fault diagnostics.

Training reference only. Always follow OEM manual, lockout/tagout procedures, and site safety rules before attempting any task on real equipment.
All VFD PLC Fault | All Levels Beginner Intermediate
Parameter Library Fault Lab Courses
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VFD Beginner

Read Motor Nameplate and Set VFD

Motor ki nameplate se voltage, current, frequency, RPM padhna aur VFD ke basic parameters mein sahi se enter karna.

Given a motor nameplate image, identify rated voltage, current, frequency, RPM, and correctly enter these into VFD basic parameters.

Steps
  1. Read motor nameplate: voltage, current (FLC), frequency, RPM, power (kW/HP)
  2. Open VFD parameter menu (usually Group 0 or P0xx)
  3. Set motor rated voltage = nameplate voltage
  4. Set motor rated current = nameplate FLC
  5. Set base frequency = nameplate frequency (50 Hz in India)
  6. Save and verify — run motor at no load, check current draw
Common Mistake: Setting VFD rated current instead of motor nameplate FLC. Confusing supply voltage with motor voltage.
⚠ Ensure VFD is powered off before wiring. Lock-out tag-out before opening motor terminal box.
Related courses: vfd-starter
VFD Beginner

Tune Acceleration and Deceleration Time

Pump, fan, aur conveyor ke liye VFD ka acceleration/deceleration time set karna aur motor ka behavior observe karna.

Set acceleration and deceleration ramp times for three different load types (pump, fan, conveyor) and observe motor behavior.

Steps
  1. Start with default accel/decel (usually 10s)
  2. Load 1 — Pump: set accel = 15s, decel = 10s. Run and observe current spike at start
  3. Load 2 — Fan: set accel = 20s, decel = 30s. Observe smooth ramp, no OV trip on stop
  4. Load 3 — Conveyor: set accel = 8s, decel = 8s. Verify no overcurrent trip
  5. Record observations: starting current, trip events, mechanical behavior
  6. Gradually reduce times until you find the optimal balance
Common Mistake: Setting 1-second acceleration on a heavy load — trips on overcurrent. Setting 5-second decel on a large fan — trips on overvoltage.
⚠ Keep hands away from rotating machinery. Use VFD display to monitor current — do not use clamp meter on live VFD output cables.
Related courses: vfd-starter

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