Schneider Altivar 28 Manual De Usario página 93

Faults - Causes - Remedies
Faults which can be reset with the automatic restart function, after the
cause has disappeared
Fault Probable cause
2
- - - - O O O O H H H H F F F F - I
speed controller
overload - speed controller temperature too
high
- tripped by I
- - - - O O O O L L L L F F F F
motor overload
- line voltage too high
- - - - O O O O S S S S F F F F
overvoltage in - disturbed line supply
steady state or
during acceleration
- - - - U U U U S S S S F F F F - line supply too low
undervoltage - transient voltage dip
- damaged load resistor
- - - - O O O O b b b b F F F F - braking too sudden or driving load
overvoltage during
operation or
deceleration
- line voltage too high
- disturbed line supply
- speed controller incorrectly sup-
- - - - P P P P H H H H F F F F
phase failure under plied or a fuse blown
load conditions - transient phase fault
- 3-phase ATV28 used on a single
phase line supply
- supply transformer too small
- mains ripple
- load instability
t too high: > 1,85 In drv - 2s
> 1,50 In drv - 60s
2
t motor being too high - Check the setting of the motor thermal protection,
Remedy
- Check the motor load
- Check the drive ventilation and the environment
Wait for the controller to cool before restarting
check the motor load. Wait for the controller to cool
before restarting
- Check the line voltage
- Check the voltage and the voltage parameter
- Reset
- Send the speed controller to be checked/repaired
- Increase the deceleration time
- Install a braking resistor if necessary
- Activate the brA function if it is compatible with the
application
- Reduce the frequency loop gain FLG if brA is active
- Check the line voltage
- Check the power connection and the fuses
- Reset
- Use a 3-phase line supply
- Check the supply transformer power
- Adjust the voltage loop gain UFr
94