DC HIGH RUSH

Was bedeutet FF80 ?

The ABB ACS800 drive's supply voltage is excessive, exceeding 124% of the unit's voltage rating (e.g., 415V, 500V, or 690V). When this occurs, the motor speed can rush to a trip level (40% of nominal speed), indicating a potentially damaging overvoltage condition on the DC link.

• Excessive AC supply voltage from the mains input.
• The drive is connected to an incorrect supply voltage rating that is higher than its nominal input.
• Voltage transients or spikes on the supply line that temporarily exceed the drive's limits.
• Malfunction in the drive's input rectifier stage allowing overvoltage.

Klicken Sie auf Schritte, um Ihren Fortschritt zu verfolgen.

1. 1

   Measure the incoming AC supply voltage at the ABB ACS800 drive input terminals (L1, L2, L3) and verify it is within the drive's specified nominal voltage range and allowable tolerance.

2. 2

   Compare the measured supply voltage to the drive's rated voltage (e.g., 415V, 500V, or 690V) as indicated on the drive's nameplate.

3. 3

   Check for any external power quality issues, such as severe voltage swells or transients, that might be causing transient overvoltage conditions.

4. 4

   Ensure the drive unit matches the intended supply voltage for the installation; a mismatch can lead to chronic overvoltage.

5. 5

   Consider installing line reactors or a dV/dT filter on the input to mitigate voltage transients if power quality is problematic.