WEG CFW-11 Programming Manual page 231

P0350 – Inverter Overload Protection (IGBTs)
Adjustable 0 = Fault is active, with switching frequency reduction
Range: 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
Properties: CFG
Access groups 01 PARAMETER 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
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
each of the available options.
P0350
0
1
2
3
(*) It reduces the switching frequency when:
- The output current exceeds 1.5 x I
- The temperature at the IGBT case is less than 10°C from the maximum temperature; and.
- P0297 = 2 (5 kHz).
P0351 – Motor Overtemperature Protection
Adjustable 0 = Off
Range: 1 = Fault/Alarm
2 = Fault
3 = Alarm
Properties: CFG
Access groups 01 PARAMETER GROUPS
via HMI:
45 Protections
Table 15.3 - Actions for the parameter P0350 options
It enables F048 – IGBT Overload Fault. In order to avoid the occurrence of the fault, the switching
frequency is reduced automatically to 2.5 kHz
It enables the fault F048 and the alarm A047 – IGBT Overload Alarm. In order to avoid the
occurrence of the fault, the switching frequency is reduced automatically to 2.5 kHz
It enables F048. Without the reduction of the switching frequency
It enables the alarm A047 and the fault F048. Without the reduction of the switching frequency
(1.1 x I ); or.
nomHD nomND
45 Protections
Faults and Alarms
Factory
Setting:
Table 15.3 on page 15-11
Action
(*)
Factory
Setting:
1
describes
(*)
1
15
15-11