WEG CFW11W G2 Series User Manual page 93

Troubleshooting and Maintenance
Fault/Alarm
A402:
Current unbalance
Phase U B5
A403:
Current unbalance
Phase V B5
A404:
Current unbalance
Phase W B5
F406:
Overtemperature on the
Braking Module.
F408:
Fault on the Cooling System
F410:
6
External Fault
F412:
Overtemperature on the
Rectifier
F414:
Fault on the External Rectifier
A415:
High temperature on Rectifier
A700:
(5)
HMI Disconnected
F701:
(5)
HMI Disconnected
A702:
(5)
Inverter Disabled
A704:
(5)
Two Movements Enabled
A706:
(5)
Reference Not Set for SoftPLC
Models in which it may occur:
(1) In the case of the CFW11W G2, the HMI does not indicated in which UP11W G2 the fault occurred. LEDs on the ICUP board indicate which UP11W caused
the fault, Figure 6.1 on page
(2) With Profibus DP module connected to slot 3 (XC43).
(3) With IOE-01 (02 or 03) module connected to slot 1 (XC41).
(4) Motor connecting cable too long, over 100-meter long, will present a high stray capacitance to the ground. The circulation of eddy currents in these
capacitances may cause the activation of the ground fault circuit and, consequently, blocking due to F074 immediately after the inverter is enabled.
(5) All models with SoftPLC application.
NOTE!
The range from P0750 to P0799 is intended for user's Faults and Alarms of the SoftPLC application.
6-10 | CFW-11W G2
Description
Alarm of current imbalance of phase U book 5.
It indicates an imbalance of 20 % in the current
distribution between this phase and the smallest
current of the same phase in another book, only
when the current in this phase is higher than 75 %
of its rated value.
Alarm of current imbalance of phase V book 5.
It indicates an imbalance of 20 % in the current
distribution between this phase and the smallest
current of the same phase in another book, only
when the current in this phase is higher than 75 %
of its rated value.
Alarm of current imbalance of phase W book 5.
It indicates an imbalance of 20 % in the current
distribution between this phase and the smallest
current of the same phase in another book, only
when the current in this phase is higher than 75 %
of its rated value.
This fault/alarm is linked to the configuration of
parameters P0832 and P0833.
- Function of input DIM 1.
- Function of input DIM 2.
Alarm or Fault linked to the disconnection of the
HMI.
Alarm indicates the General Enable command is
Disabled.
Two movements enabled.
Reference not set for SoftPLC.
6-10. When the reset is executed, the LEDs turn off and turn back on if the fault persists.
Figure 6.1: LEDs that indicate fault on the arms of the power units (desaturation)
Possible Causes
Poor electrical connection between the DC link
„
and the power unit.
Poor electrical connection between the power
„
unit output and the motor.
Note: In case of quick accelerations and brakes,
this alarm may be momentarily indicated,
disappearing after some seconds. This does not
indicate a malfunction on the inverter. In case this
alarm persists when the motor is operating at
constant speed, it is an indication of abnormal
current distribution between the power units.
Fault on the cooling of the braking module.
„
Load inertia too high or deceleration ramp too fast.
„
Load on the motor shaft is too high.
„
Pump fault.
„
Fault on the panel ventilation.
„
Input DIM1 or DIM2 open. Check the drive used
„
in the application.
Ambient temperature around the rectifier (>45 °C
„
(113 °F)) and output current too high.
Cooling problem on the rectifier.
„
Rectifier heatsink too dirty.
„
Undervoltage or phase loss in the rectifier input.
„
High ambient temperature around the rectifier
„
and high output current.
Rectifier heatsink too dirty.
„
RTC function block was enabled in the SoftPLC
„
application and the HMI is disconnected from
the inverter.
Run/Stop command of the SoftPLC application
„
or the movement block was enabled with the
inverter in general disabled.
It occurs when two or more movement blocks
„
are simultaneously enabled.
It occurs when a movement block is enabled and
„
the speed reference is not configured for SoftPLC
(check P0221 and P0222).