Undervoltage in power section

Hva betyr E2816 ?

The IndraDrive MPx02 has detected an undervoltage condition within its internal power section, specifically on the DC bus. This means the DC link voltage has fallen below a safe operating threshold, which can occur due to insufficient incoming AC power or excessive current demand, impacting drive stability.

• Low incoming AC mains voltage, leading to an insufficient DC bus voltage.
• Excessive power regeneration back into a non-regenerative supply, causing the DC bus to collapse (less common for undervoltage, usually overvoltage, but can occur with insufficient braking capacity).
• Sudden heavy load demand causing the DC bus voltage to sag transiently.
• Faulty internal DC bus capacitors or charging circuit.
• High-resistance connections in the main power circuit.

Klikk på steg for å spore fremgangen.

1. 1

   Measure the incoming AC mains voltage at the drive input and verify it is within the specified operating range, ensuring no upstream issues are causing low supply voltage.

2. 2

   Monitor the DC bus voltage (if accessible via diagnostics) to confirm the undervoltage condition and its behavior during operation.

3. 3

   Check all power connections to the IndraDrive MPx02 for looseness or corrosion, which could introduce resistance and voltage drops.

4. 4

   Verify the drive's configured mains voltage parameter (P-0-0120) matches the actual supply voltage.

5. 5

   If the mains voltage is stable and correct, but undervoltage persists, it may indicate an internal fault within the drive's power section, requiring service.