KiraYamato Posted August 2, 2011 Share Posted August 2, 2011 On the page 204 of Turbo SRM, it says that: • I7mn6 = 0: Outputs A and B are PWM; Output C is PWM • I7mn6 = 1: Outputs A and B are DAC; Output C is PWM • I7mn6 = 2: Outputs A and B are PWM; Output C is PFM • I7mn6 = 3: Outputs A and B are DAC; Output C is PFM and according to the page 21 of Turbo PMAC HRM: On Pmac1, there is only one output and one output mode: DAC output. On PMAC2 boards, each channel has 3 outputs, and there are 4 output modes. We know that on the JMACH1,there are DAC1 and DAC1/ pins for channel 1, and there are PUL_1 and DIR_1 on JMACH2 for channel 1. My question is : what do you mean by Outputs A 、B and C？ Does A = DAC and B = DAC/ and C=PUL+DIR ? Thank you for your attention Link to comment Share on other sites More sharing options...
steve.milici Posted August 4, 2011 Share Posted August 4, 2011 The "A", "B" and "C" outputs refer to the PMAC2 servo gate capability to do multiple functions. For commutation thes are the three PWM channels for the motor. For sinusoidal commutation the "A" and "B" are the two DACs. The "C" channel is used for the stepper mode of output. This is explained in detail the Turbo PMAC Users manual. Link to comment Share on other sites More sharing options...
Recommended Posts