CARLO GAVAZZI VariFlex3 RVFFA3400400F, Быстрый старт

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Motor Controllers AC Variable Frequency Drives
Type Variflex 3 RVFF
Specifications are subjected to change without notice.
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5.3 Warning / Self-diagnosis Detection Function
When the inverter detects a warning, the keypad displays a warning code (flash).
Note: The fault contact output does not energize on a warning and the inverter continues operation.
When the warning is no longer active the keypad will return to its original state.
When the inverter detected a programming error (for example two parameters contradict each other of
are set to an invalid setting), the keypad displays a self-diagnostics code.
Note:
The fault contact output does not energize on a self-diagnostics error. While a self-diagnostics
code is active the inverter does not accept a run command until the programming error is corrected.
Note: When a warning or self- diagnostic error is active the warning or error code will flash on the keypad.
LED
display
Description Cause Possible solutions
OV
(flash)
Over
voltage DC bus voltage
exceeds the OV
detection level: 410Vdc
If input voltage 01-14
is set lower than
400V, the OV
detection value will
decrease to
700Vdc
•
Deceleration time set too short,
resulting in regenerative energy
flowing back from motor to the inverter.
•
The inverter input voltage is too high.
•
Use of power factor correction
capacitors.
•
Excessive braking load.
•
Braking transistor or resistor defective.
•
Speed search parameters set
incorrectly.
•
Increase deceleration time
•
Reduce input voltage to
comply with the input voltage
requirements or install an AC
line reactor to lower the input
voltage.
•
Remove the power factor
correction capacitor.
•
Use dynamic braking unit.
•
Replace braking transistor or
resistor.
•
Adjust speed search
parameters.
UV
(flash)
under
voltage
DC bus voltage is
lower than the UV
detection level
(380Vdc) or the pre-
charge contactor is
not active while the
inverter is running.
The detection value
can be adjusted by
07-13.
•
The input voltage is too low.
•
Input phase loss.
•
Input voltage fluctuation.
•
Magnetic contactor damaged.
•
DC bus voltage feedback signal value
not incorrect.
•
Check the input voltage.
•
Check input wiring.
•
Check power source
•
Replace magnetic contactor
•
Replace control board or
complete inverter.