Charging Fault

Hva betyr F80 ?

The drive failed to reach the required DC voltage within the set charging time for the Main Circuit Breaker (MCB). This can be due to a non-operational charging circuit, a high load on the DC link during charging, or an insufficient supply voltage for the charging circuit. This prevents the drive from starting up properly.

• Failure of the pre-charge resistors or the associated contactors in the DC link charging circuit.
• Loss of one or more input AC phases (e.g., L1, L2, L3) to the drive's rectifier bridge, preventing full DC bus voltage.
• Excessive load on the DC link during the charging sequence, drawing current faster than the pre-charge circuit can supply.
• Degraded or shorted DC link capacitors, unable to hold charge or presenting a high leakage current.
• Faulty DC link voltage measurement circuit or sensor providing an incorrect reading to the drive's control board.
• Parameter P5-06 (DC Link Charge Time) set too short for the drive unit's capacitance or application.

Klikk på steg for å spore fremgangen.

1. 1

   Measure the input AC line voltage (e.g., between L1-L2, L2-L3, L3-L1) to confirm all phases are present and at nominal voltage.

2. 2

   Verify the resistance of the pre-charge resistors (if accessible) using an ohmmeter to ensure they are not open or shorted.

3. 3

   Measure the DC link voltage across the DC+ and DC- terminals after attempting to clear the fault, observing the charge rate.

4. 4

   Inspect the pre-charge contactors or solid-state devices for proper operation (e.g., coil voltage, contact continuity).

5. 5

   Increase parameter P5-06 (DC Link Charge Time) in small increments to allow more time for the DC link capacitors to charge.