WEG MW500 User Manual Page 24
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Quick Reference of Parameters, Alarms and Faults
English
MW500 | 25
Fault / Alarm Description Possible Causes
F0031
Communication
Fault with Plug-in
Module
Main control cannot set a
communication link with the plug-
in module.
Plug-in module is damaged.
Plug-in module is not properly connected.
Problem in the identification of the plug-in module; refer
to P0027 for further information.
F0033
VVW Self-tuning
Fault
Stator resistance setting fault
P0409.
Stator resistance value in P0409 does not comply with
the inverter power.
Motor connection error; turn off the power supply and
check the motor terminal box and the connections with
the motor terminals.
Motor power too low or too high in relation to the
inverter.
F0048
Overload on the
IGBTs
Overload fault on the power pack
with IGBTs (3 s in 1.5xInom).
Inverter output overcurrent (>2xInom).
F0051
IGBTs
Overtemperature
Overtemperature fault measured
on the temperature sensor of the
power pack.
High ambient temperature around the inverter (>50 °C
(>122 °F)) and high output current.
Blocked or defective fan.
Heatsink is too dirty, preventing the air flow.
F0070
Overcurrent/Short
Circuit
Overcurrent or short circuit on the
output, DC link or braking resistor.
Short circuit between two motor phases.
Short circuit of the rheostatic braking resistor
connecting cables.
IGBTs module in short circuit or damaged.
Start with too short acceleration ramp.
Start with motor spinning without the Flying Start
function.
F0072
Motor Overload
Motor Overload Fault (60 s in
1.5xInom).
P0156, P0157 and P0158 setting is too low in relation
to the motor operating current.
Overload on the motor shaft.
F0074
Ground Fault
Ground overcurrent fault.
Note: This failure may be disabled
by P0343.
Short circuit to the ground in one or more output
phases.
Motor cable capacitance too high, causing current
peaks in the output.
F0076
Motor Conection
Lost
There is an input phase fault or
unbalanced 3 phase input power
supply.
Bad motor connection to the drive.
Motor connection is broken.
F0078
Motor
Overtemperature
Overtemperature fault measured
on the motor temperature sensor
(Triple PTC) via analog input AIx or
digital input DIx.
Overload on the motor shaft.
Load cycle is too high (high number of starts and stops
per minute).
High ambient temperature around the motor.
Poor contact or short circuit (3 k9 < RPTC < 0k1).
Motor thermistor not installed.
Motor shaft is stuck.
F0079
Motor
Overtemperature
(dedicated input)
Overtemperature fault measured
on the motor temperature sensor
(Triple PTC) via dedicated circuitry
in the power scheme.
Overload on the motor shaft.
Load cycle is too high (high number of starts and stops
per minute).
High ambient temperature around the motor.
Poor contact or short circuit (3 k9 < RPTC < 0 k1).
Motor thermistor not installed.
Motor shaft is stuck.
F0080
CPU Fault
(Watchdog)
Fault related to the supervision
algorithm.
Electric noise.
Inverter firmware fault.
F0084
Auto-diagnosis
Fault
Fault related to the automatic
identification algorithm of the
inverter hardware and plug-in
module.
Poor contact in the connection between the main
control and the power pack.
Hardware not compatible with the firmware version.
Defect on the internal circuits of the inverter.
F0091
External Fault
External fault via DIx (“No External
Fault” in P026x).
Wiring on DI1 to DI8 inputs are open or have poor
contact.
- Frequency Inverter 1
- Convertidor de Frecuencia 1
- Inversor de Frequência 1
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