Delta VFD007FP4EA-41 - Page 215

Chapter 12 Description of Parameter Settings|CFP2000 Series
12.1-00-7
the setting of carrier. Refer to chapter 9 (specifications) or Pr.00-01 for the rated current.
 Normal duty: over load ability is 120% rated output current in 60 second (over load ability is 160%
rated output current in 3 second). Please refer to Pr.00-17 for the setting of carrier wave. Refer to
chapter 9 (specifications) or Pr.00-01 for the rated current.
 Pr.00-01 changes as the setting of Pr.00-16 changes. The default setting and maximum setting
range of Pr.06-03, 06-04 will change as the setting of Pr.00-16 changes.
Carrier Frequency
Factory setting: Table below
Settings 2~15kHz
 This parameter determinates the PWM carrier frequency of the AC motor drive.
Models
1-25HP [0.75-18.5kW] 30-100HP [22-75kW] 125HP [90kW]
Setting Range
02~15kHz 02~10kHz 02~09kHz
Normal Duty Factory Setting
6kHz 6kHz 6kHz
Light Duty Factory Setting
6kHz 6kHz 6kHz
1kHz
8kHz
15kHz
Carrier
Frequency
Acoustic
Noise
Electromagnetic
Noise or Leakage
Current
Heat
Dissipation
Current
Wave
Significant
Minimal
Minimal
Minimal
Significant
Significant
 From the table, we see that the PWM carrier frequency has a significant influence on the
electromagnetic noise, AC motor drive heat dissipation, and motor acoustic noise. Therefore, if
the surrounding noise is greater than the motor noise, lower the carrier frequency is good to
reduce the temperature rise. Although it is quiet operation in the higher carrier frequency, the
entire wiring and interference resistance should be considerate.
 When the carrier frequency is higher than the factory setting, it needs to protect by decreasing the
carrier frequency. See Pr.06-55 for the related setting and details.
Reserved
PLC Command Mask (SOOC, SOOF, SOTC)
Factory Setting: Read Only
Settings
Bit 0: Control command by PLC force control
Bit 1: Frequency command by PLC force control
Bit 2: Reserved
Bit 3: Reserved
 This parameter determines if frequency command or control command is occupied by PLC
Source of the Master Frequency Command（AUTO）
Factory Setting: 0
Settings
0: Digital keypad
1: RS-485 serial communication
2: External analog input (Pr.03-00)