Programming and Parameters 3-37
Advance Program Group (continued)
A166 [Reverse Disable] Related Parameter(s): b006, P036, T051-T054
Stop drive before changing this parameter.
Enables/disables the function that allows the direction of motor rotation to be changed. The reverse
command may come from a digital or a serial command. All reverse inputs including two-wire Run
Reverse will be ignored with reverse disabled.
Options 0 “Rev Enabled”
1 “Rev Disabled”
(Default)
A167 [Flying Start En] Related Parameter(s): A200
Sets the condition that allows the drive to reconnect to a spinning motor at actual RPM.
Important: When this parameter is enabled, verify that A200 [Motor NP FLA] is set to the motor’s
actual full load amp value.
Options 0 “Disabled” (Default)
1 “Enabled”
A168 [PWM Frequency] Related Parameter(s): A169
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 and F 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
54321 109
A169 [PWM Mode] Related Parameter(s): A168
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.
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