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Rockwell Automation Publication 22C-UM001J-EN-E - January 2017
Chapter 3
Programming and Parameters
A168 [PWM Frequency]
Sets the carrier frequency for the PWM output waveform. The chart below provides derating guidelines based on the PWM frequency setting.
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
IMPORTANT
Ignoring derating guidelines can cause reduced drive performance.
% 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]
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.
