WEG CFW-11 Series, Programming Manual

Page: 84 / 307

Inverter Model and Accessories Identification
6-10
6
P0297 – Switching Frequency
Adjustable
Range: 0 = 1.25 kHz
1 = 2.5 kHz
2 = 5.0 kHz
3 = 10.0 kHz
4 = 2.0 kHz Factory
Setting: According to
inverter model
Properties: CFG
Access groups
via HMI: 01 PARAMETER GROUPS
42 Inverter Data
Description:
Refer to the allowed current for switching frequencies different from the default, in the tables available in chapter 8 -
Technical Specifications, of the CFW-11 user's manual.
The inverter switching frequency can be adjusted according to the needs of the application.
Higher switching frequencies imply in lower motor acoustic noise, however, the selection of the switching frequency
results in a compromise between the motor acoustic noises, the losses in the inverter IGBTs and the maximum
allowed currents.
The reduction of the switching frequency reduces effects related to motor instability, which occur in specific application
conditions. It also reduces the earth leakage current, being able to avoid the actuation of the faults F074 (Ground
Fault) or F070 (Output Overcurrent/Short Circuit).
Note: The option 0 (1.25 kHz) is only allowed for the V/f or VVW control (P0202 = 0, 1, 2 or 5).
NOTE!
In case the selected option is not permitted, the HMI will display the message: "P0297 and P0296
Incompatible", and the inverter status will change to: "Config", and P0006 = Configuration.
The incompatibilities between P0296 and P0297 are shown in option 37 of
Section 5.7
INCOMPATIBILITY BETWEEN PARAMETERS on page 5-12 of this manual.
P0298 – Application
Adjustable
Range: 0 = Normal Duty (ND)
1 = Heavy Duty (HD) Factory
Setting: 0
Properties: CFG
Access groups
via HMI: 01 PARAMETER GROUPS
42 Inverter Data