Magnetek HPV 900 Series 2, Техническое руководство

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Troubleshooting
149
Name Description Possible Causes & Corrective Action
Undervolt Flt
[F47]
This fault is generated during a run
condition if the DC bus voltage falls
below the level that is specified by UV
Fault Level (A4).
Fault is declared when:
) 4 ( * 2
* ) 4 (
A Volts L L Input
A Level Fault UV volt bus DC

Low Input Voltage

Check INPUT L-L VOLTS (A4) and UV
FAULT LEVEL (A4) parameters

Disconnect Dynamic Braking resistor
and re-try.

Verify proper input voltage and increase,
if necessary, the input AC voltage within
the proper range

Check for a missing input phase

Check power line disturbances due to
starting of other equipment
Drive Accurately Reading the Dc Bus

Measure the dc bus with a meter across
terminals B1 and
–

Compare that with the value on the
digital operator, DC BUS VOLTAGE
(D2)
Hardware Problem

The drive may need to be replaced.
Uv Alarm
(alarm)
[F73]
This alarm is generated during a run
condition if the DC bus voltage falls
below the level that is specified by UV
Alarm Level (A4).
Alarm is declared when:
) 4 ( * 2
* ) 4 (
A Volts L L Input
A Level Alarm UV volt bus DC

Low Input Voltage

Check INPUT L-L VOLTS (A4) and UV
ALARM LEVEL (A4) parameters

Disconnect Dynamic Braking resistor
and re-try.

Verify proper input voltage and increase,
if necessary, the input AC voltage within
the proper range

Check for a missing input phase

Check power line disturbances due to
starting of other equipment
Drive Accurately Reading the Dc Bus

Measure the dc bus with a meter across
terminals B1 and
–

Compare that with the value on the
digital operator, DC BUS VOLTAGE
(D2)
Hardware Problem

The drive may need to be replaced.
V/Hz Fault
(open loop)
[F55]
This fault is following two formulas are
not satisfied:
































VOLTS
MTR
RATED
VOLTS
MID
MOTOR
VOLTS
MIN
MOTOR
:
































FREQ
EXCIT
RATED
FREQ
MID
MOTOR
FREQ
MIN
MOTOR
Check Parameters Settings:

Check RATED MTR VOLTS (A5)
parameter for correct setting

Check MOTOR MID VOLTS (A5)
parameter for correct setting

Check MOTOR MIN VOLTS (A5)
parameter for correct setting

Check RATED EXCIT FREQ (A5)
parameter for correct setting

Check MOTOR MID FREQ (A5)
parameter for correct setting

Check MOTOR MIN FREQ (A5)
parameter for correct setting