WEG CFW100 V2.4X Referencia Rápida página 22

Quick Reference of Parameters, Alarms and Faults
Fault / Alarm
A046 Motor overload alarm.
Motor Overload
A050 Overtemperature alarm from the power
Power Module module temperature sensor (NTC).
Overtemperature
A090 External alarm via DIx (option "No
External Alarm External Alarm" in P26x).
A128 Alarm that indicates serial communication
Telegram fault. It indicates the equipment stopped
Reception receiving valid serial telegrams for a period
Timeout longer than the setting in P314.
A133 It indicates that the CAN interface has
No power supply no power supply between pins 1 and 5
on the CAN of the connector.
interface
A134 Buss off error detected on the CAN
Bus Off interface.
A135 CANopen communication error control
Node Guarding/ detected communication error using
Heartbeat the guarding mechanism.
22 | CFW100
Description Possible Causes
„
Settings of P156 is too low for the used motor.
„ Overload on the motor shaft.
„
High temperature at IGBTs (P030 > 110 °C).
„
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.
„ Wiring on DI1 to DI4 inputs are open or have
poor contact.
„ Check network installation, broken cable or
fault/poor contact on the connections with the
network, grounding.
„
Ensure the master always sends telegrams
to the equipment in a time shorter than the
setting in P314.
„
Disable this function in P314.
„ Measure if there is voltage within the allowed
range between pins 1 and 5 of the CAN interface
connector.
„ Check if the power supply cables are not
misconnected or inverted.
„
Check for contact problems on the cable or
connector of the CAN interface.
„
Check for short circuit on the CAN circuit
transmission cable.
„ Check if the cables are not misconnected
or inverted.
„
Check if all the network devices use the same
baud rate.
„ Check if the termination resistors with the right
specification were installed only at the end of
the main bus.
„
Check if the CAN network was properly installed.
„
Check the times set on the master and on the
slave for message exchange. In order to prevent
problems due to transmission delays and time
counting, it is recommended that the values set
for error detection by the slave be multiples of the
times set for message exchange on the master.
„ Check if the master is sending the guarding
telegrams in the time set.
„
Check problems in the communication that may
cause missing telegrams or transmission delays.