Advanced program group (continued), A168 [pwm frequency, A169 [pwm mode – Rockwell Automation 22C PowerFlex 400 AC Drive FRN 1.xx - 7.xx User Manual
Page 100: 42 programming and parameters
3-42
Programming and Parameters
PowerFlex 400 Adjustable Frequency AC Drive FRN 1.xx - 7.xx User Manual
Publication 22C-UM001I-EN-P
Advanced Program Group (continued)
A168 [PWM Frequency]
Related Parameter(s):
Sets the carrier frequency for the PWM output waveform. The chart below provides derating
guidelines based on the PWM frequency setting.
Important: Ignoring derating guidelines can cause reduced drive performance.
Values
Default:
4.0 kHz
Min/Max:
2.0/10.0 kHz (Frame C and D drives)
2.0/8.0 kHz (Frame E, F, G and H drives)
Display:
0.1 kHz
% Output Curent (A)
68
84
88
80
76
96
100
92
72
64
60
56
52
50
48
Carrier Frequency (kHz)
8
7
6
5
4
3
2
1
10
9
A169 [PWM Mode]
Related Parameter(s):
Selects the PWM algorithm used.
Options
0 “Space Vector”
3-Phase Modulation: Provides quiet operation and produces
less motor losses.
1 “2-Phase” (Default)
2-Phase Modulation: Provides less drive losses and best
performance with long motor cable runs.