Hello Tom,
Thank you. I must have goofed then.
I should have provided this schematic first. The schematic for both motors is as follows.
A ----
||
A'----
B ----
||
B'----
Per the Motor table I provided.
AB = Step 1
BA' = Step 2
A'B' = Step 3
AB' = Step 4
Then, I would have
A1/A2 = First coil, and B1/B2 = Second Coil.
Given the FAQ, the ABBA schematic then is as you describe. But A' is the lead. To me, the pattern is flipped depending on which pin gets the pulse first. The table says A is the first step. Given the logic was yours, which pin fires first step, 2 or 5, to match the table?
Going backards is the same table but starting at A. Both forward and backwards have A as the first step.
Should this be the sequence if pin 2 gets energized first.
2 = A = Black
3 = B' = Blue
4 = B = Red
5 = A' = Green
or
The Schematic shows this sequence with supplied charge
1B = 2 = +
2A = 3 = -
2B = 4 = -
1A = 5 = +
The motor is expecting and using FAQ ABBA. Leading variable is always positive.
A + B = 2 + 4 = Step 1
B + A' = 4 + 5 = Step 2
A' + B' = 5 + 3 = Step 3
A + A' = 2 + 5 = Step 4
For Reverse, the motor is epecting and using FAQ ABBA
A' + A = 5 + 2 = Step 1'
B' + A' = 3 + 5 = Step 2'
A' + B = 5 + 4 = Step 3'
B + A = 4 + 2 = Step 4'
This assumes that the FAQ ABBA is good and the motor likes the setup. However, the schematic is different. What does AstroEQ bring to the motor?
Ok. I used my Fluke to test what is at the AstroEQ. Starting from the Driver, North is pin 1. has Given the pins in the RJ11 where 2 3 4 5 and the driver, they each tap out to be as follows.
2 = A1 = A = Black = +
3 = B2 = B' = Blue = -
4 = B1 = B = Red = +
5 = A2 = A' = Green = -.
Therefore the PDF is not correct for the DRV8825. The FAQ is correct for the DRV8825. Thank you for your assistance.
T