WEG CFW700, Programming And Troubleshooting Manual

Page: 168 / 223

15
Faults and Alarms
15-8 | CFW700
If after Auto-Reset, the same fault is repeated three times consecutively, the Auto-Reset function will be disabled.
A fault is considered consecutive if it happens again within 30 seconds after the Auto-Reset.
Therefore, if a fault occurs four consecutive times, the inverter will remain disabled (general disable) and the fault
will remain being indicated.
If P0340 ≤ 2, auto-reset will not occur.
P0343 – Ground Fault Configuration
Adjustable
Range:
0 = Off
1 = On Factory
Setting:
1
Properties:
cfg
Access groups
via HMI:
Description:
This parameter enables the Ground Fault Detection, which will be responsible for the F074 (Ground Fault)
actuation.
Thus if wished, it is possible to inhibit the Ground Fault (F074) occurrence by setting P0343=Off.
P0348 – Motor Overload Configuration
Adjustable
Range:
0 = Off
1 = Fault/Alarm
2 = Fault
3 = Alarm Factory
Setting:
1
Properties:
cfg
Access groups
via HMI:
Description:
This parameter allows the desired protection level for the motor overload function to be configured. Refer to the
table below for details on the actuation of each one of the available options.
Table 15.2: Actions for the parameter P0348 options
P0348 Action
0 = Off
The overload protection is disabled. Faults or alarms will not be generated for the motor operation
in overload conditions.
1 = Fault/Alarm
The inverter will display an alarm (A046) when the motor overload reaches the level programmed
in P0349, and will generate a fault (F072) when the motor overload reaches the overload protection
tripping level.
2 = Fault
Only the fault (F072) will be generated when the motor overload reaches the overload protection
trip level, and the inverter will be disabled.
3 = Alarm
Only the alarm (A046) is generated when the motor overload reaches the value programmed in
P0349 and the inverter continues operating.
The trip level of the overload protection is calculated internally by the CFW700, taking into account the motor
current, its thermal class and its service factor. Refer to the parameter P0159 in this section.