WEG CFW-11 Programming Manual page 208

Faults and Alarms
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.
P0348
0 = Off
1 = Fault/Alarm
2 = Fault
3 = Alarm
The trip level of the overload protection is calculated internally by the CFW-11, taking into account the motor
current, its thermal class and its service factor. Refer to the parameter P0159 in this section.
P0349 – Motor overload alarm Level
Adjustable
Range:
Proprieties:
Access groups
via HMI:
Description:
This parameter defines the level for the motor overload protection alarm actuation (A046), it is expressed as a
percentage of the trip level of the overload integrator.
It will only be effective if P0348 is programmed in 1 (Fault/Alarm) or 3 (Alarm).
P0350 – inverter overload Protection (iGBts)
Adjustable
Range:
Proprieties:
Access groups
via HMI:
Description:
The inverter overload function operates separately from the motor overload protection, and it has the purpose
of protecting the IGBTs and rectifiers in case of overload, avoiding that damage due to overtemperature at their
15
junctions occurs.
Thus, the parameter P0350 allows configuring the desired protection level for this function, even with the automatic
reduction of the switching frequency, in order to avoid the fault occurrence. The next table describes each of the
available options.
15-10
Table 15.2 - Actions for the parameter P0348 options
The overload protection is disabled. Faults or alarms will not be generated for the motor operation
in overload conditions
The inverter will show an alarm (A046) when the motor reaches the level programmed in P0349,
and a fault (F072) when the motor reaches the overload actuation value. Once the fault is
generated, the inverter will be disabled
Only the fault (F072) will be generated when the motor reaches the overload protection trip level,
and the inverter will be disabled
Only the alarm (A046) will be generated when the motor reaches the level programmed in P0349,
and the motor continues operating
70 to 100 %
CFG
01 PARAMETER GROUPS
45 Protections
0 = Fault is active, with switching frequency reduction
1 = Fault and alarm are active, with switching frequency
reduction
2 = Fault is active, without switching frequency reduction
3 = Fault and alarm are active, without switching frequency
reduction
CFG
01 PARAMETER GROUPS
45 Protections
Action
Factory
Setting:
Factory
Setting:
85 %
1