Delta CFP2000 Series, User Manual

Page: 414 / 756

Chapter 12 Description of Parameter Settings

CFP2000
12.1-10-3

Injection Frequency
Default: 500
Settings 0–1200 Hz

This parameter is a high frequency injection command in PM SVC control mode and usually you
do not need to adjust it. If a motor’s rated frequency (for example, 400 Hz) is too close to the
frequency setting for this parameter (that is, the default is 500 Hz), it affects the accuracy of the
angle detection. Refer to the setting for Pr.01-01 before you adjust this parameter.

If the setting value for Pr.00-17 is lower than Pr.10-51*10, then increase the frequency of the
carrier wave.

Pr.10-51 is valid only when Pr.10-53 = 2.

Injection Magnitude
Default: 30.0
Settings 0.0–200.0 V

The parameter is the magnitude command for the high frequency injection signal in PM SVC
control mode.

Increasing the parameter can increase the accuracy of the angle estimation, but the
electromagnetic noise might be louder if the setting value is too high.

The system uses this parameter after the motor auto-tunes parameters. This parameter
influences the angle estimation accuracy.

When the ratio of the salient pole (Lq/Ld) is lower, increase Pr.10-52 to make the angle
detection more accurate.

Pr.10-52 is valid only when Pr.10-53 = 2.

PM Initial Rotor Position Detection Method
Default: 0
Settings 0: Disable
1: Force attracting the rotor to zero degrees
2: High frequency injection
3: Pulse injection

Set to 2 for IPM; set to 3 for SPM. If these settings cause problems, then set the parameter to
“1”.