WEG CFW700, Programming And Troubleshooting Manual

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6
Inverter Model and Accessories Identification
CFW700 | 6-5
P0296 – Line Rated Voltage
Adjustable
Range:
0 = 200 - 240 V
1 = 380 V
2 = 400 - 415 V
3 = 440 - 460 V
4 = 480 V Factory
Setting:
According to
the inverter
model
Properties: cfg
Access groups
via HMI:
Description:
Setting according to the inverter power supply voltage.
The adjustable range depends on the inverter model, according to the table 6.6 , which also presents the
factory default value.
NOTE!
When adjusted via the keypad (HMI), this parameter may change automatically the following
parameters: P0151, P0153, P0185, P0321, P0322 and P0323.
Table 6.6: P0296 setting according to the CFW700 inverter model
Inverter Model Adjustable Range Factory Setting
200-240 V 0 = 200 ... 240 V 0
380-480 V
1 = 380 V
2 = 400 / 415 V
3 = 440 / 460 V
4 = 480 V
3
P0297 – Switching Frequency
Adjustable
Range:
0 = 1.25 kHz
1 = 2.5 kHz
2 = 5.0 kHz
3 = 10.0 kHz Factory
Setting:
2
Properties: cfg
Access groups
via HMI:
Description:
Refer to the allowed current for switching frequencies different from the default, in the tables available in chapter
8 - Technical Specifications, of the CFW700 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 3).