Quick Reference Of Alarms And Faults - WEG CFW100 Programming Manual

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QUICK REFERENCE OF ALARMS AND FAULTS

Fault / Alarm
F021
Undervoltage on the DC Link
F022
Overvoltage on the DC Link
F031
Fault in Communication with
Expansion Accessory
F032
Comm. Plug-in module
comunication Lost
F033
VVW Self-tuning Fault
A046
Motor Overload
A050
IGBTs Overtemperatures
F051
IGBTs Overtemperatures
F067
Incorrect Encoder/ Motor
Wiring
F070
Overcurrent/Shortcircuit
F072
Motor Overload
F078
Motor Overtemperature
F079
Encoder Signal Fault
F080
CPU Fault (Watchdog)
Description
Undervoltage fault on the intermediate
circuit.
Overvoltage fault on the intermediate
circuit.
Main control cannot establish the
communication link with the IOs
expansion accessory.
Main control cannot establish
the communication link with the
communication acccessory.
Stator resistance setting fault P409.
Motor overload alarm.
Overtemperature alarm from the power
module temperature sensor (NTC).
Overtemperature fault measured on
the temperature sensor of the power
pack.
Fault related to the phase relation of the
encoder signals.
Overcurrent or short-circuit on the
output, DC Link or braking resistor.
Motor overload fault.
Overtemperature fault measured on
the motor temperature sensor (Triple
PTC) via analog input AIx
Fault of encoder signals absent.
Fault related to the supervision
algorithm of the inverter main CPU.
QUICK REFERENCE OF ALARMS AND FAULTS
Possible Causes
Wrong voltage supply; check if the data on the inverter label
comply with the power supply and parameter P296.
Supply voltage too low, producing voltage on the DC Link
below the minimum value (Level F021) according to
10.1 on page 10-3.
Phase fault in the input.
Fault in the pre-charge circuit.
Wrong voltage supply; check if the data on the inverter label
comply with the power supply and parameter P296.
Supply voltage is too high, producing voltage on the DC
Link above the maximum value (Level F022) according to
Table 10.1 on page 10-3.
Load inertia is too high or deceleration ramp is too fast.
P151 setting is too high.
Accessory damaged.
Poor connection of the accessory.
Problem in the identification of the accessory; refer to P027.
Accessory damaged.
Poor connection of the accessory.
Problem in the identification of the accessory; refer to P028.
Stator resistance value in P409 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.
Settings of P156 is too low for the used motor.
Overload on the motor shaft.
High temperature at IGBTs. P030 > Level A050, according
to Table 11.1 on page 11-4.
High ambient temperature around the inverter and high
output current. For further information, refer to of the
user's manual available for download on the website:
www.weg.net.
Blocked or defective fan.
Heatsink is too dirty, preventing the air flow.
High temperature at IGBTs. P030 > Level F051, according
to Table 11.1 on page 11-4.
High ambient temperature around the inverter and high
output current. For further information, refer to of the
user's manual available for download on the website:
www.weg.net.
Blocked or defective fan.
Heatsink is too dirty, preventing the air flow.
Output motor cables U, V, W are inverted.
Encoder channels A and B are inverted.
Encoder was not properly mounted.
Short-circuit between two motor phases.
IGBTs module in short-circuit or damaged.
Start with too short acceleration ramp.
Start with motor spinning without the Flying Start function.
P156, P157 or P158 setting is too low in relation to the
motor operating current.
Overload on the motor shaft.
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 (3k9 < R
Motor thermistor not installed.
Motor shaft is stuck.
Wiring between encoder and interface accessory to
encoder broken.
Encoder defective.
Electric noise.
Inverter firmware fault.
Table
< 0k1).
PTC
Micro Mini Drives | 1-1
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